diff --git a/src/tint/lang/core/core.def b/src/tint/lang/core/core.def
index de0c81e..639eba7 100644
--- a/src/tint/lang/core/core.def
+++ b/src/tint/lang/core/core.def
@@ -17,6 +17,10 @@
 //                                                                            //
 // This file is used to generate parts of the Tint BuiltinTable, various      //
 // enum definition files, as well as test .wgsl files.                        //
+//                                                                            //
+// After modifying this file, run:                                            //
+//    tools/run gen                                                           //
+// from the Dawn source directory.                                            //
 ////////////////////////////////////////////////////////////////////////////////
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -910,6 +914,7 @@
 @stage("fragment", "compute") fn atomicCompareExchangeWeak<T: iu32, S: workgroup_or_storage>(ptr<S, atomic<T>, read_write>, T, T) -> __atomic_compare_exchange_result<T>
 
 @must_use @stage("compute") fn subgroupBallot() -> vec4<u32>
+@must_use @stage("compute") fn subgroupBroadcast<T: fiu32, L: iu32>(value: T, @const sourceLaneIndex: L) -> T
 
 ////////////////////////////////////////////////////////////////////////////////
 // Value constructors                                                         //
diff --git a/src/tint/lang/core/function.cc b/src/tint/lang/core/function.cc
index 1e636b3..afa1150 100644
--- a/src/tint/lang/core/function.cc
+++ b/src/tint/lang/core/function.cc
@@ -371,6 +371,9 @@
     if (name == "subgroupBallot") {
         return Function::kSubgroupBallot;
     }
+    if (name == "subgroupBroadcast") {
+        return Function::kSubgroupBroadcast;
+    }
     if (name == "_tint_materialize") {
         return Function::kTintMaterialize;
     }
@@ -611,6 +614,8 @@
             return "atomicCompareExchangeWeak";
         case Function::kSubgroupBallot:
             return "subgroupBallot";
+        case Function::kSubgroupBroadcast:
+            return "subgroupBroadcast";
         case Function::kTintMaterialize:
             return "_tint_materialize";
     }
@@ -679,7 +684,7 @@
 }
 
 bool IsSubgroupBuiltin(Function f) {
-    return f == Function::kSubgroupBallot;
+    return f == Function::kSubgroupBallot || f == Function::kSubgroupBroadcast;
 }
 
 bool HasSideEffects(Function f) {
diff --git a/src/tint/lang/core/function.cc.tmpl b/src/tint/lang/core/function.cc.tmpl
index 32ed851..e594eb6 100644
--- a/src/tint/lang/core/function.cc.tmpl
+++ b/src/tint/lang/core/function.cc.tmpl
@@ -105,7 +105,7 @@
 }
 
 bool IsSubgroupBuiltin(Function f) {
-    return f == Function::kSubgroupBallot;
+    return f == Function::kSubgroupBallot || f == Function::kSubgroupBroadcast;
 }
 
 bool HasSideEffects(Function f) {
diff --git a/src/tint/lang/core/function.h b/src/tint/lang/core/function.h
index 4347af9..e9b52fa 100644
--- a/src/tint/lang/core/function.h
+++ b/src/tint/lang/core/function.h
@@ -149,6 +149,7 @@
     kAtomicExchange,
     kAtomicCompareExchangeWeak,
     kSubgroupBallot,
+    kSubgroupBroadcast,
     kTintMaterialize,
     kNone,
 };
@@ -287,6 +288,7 @@
     Function::kAtomicExchange,
     Function::kAtomicCompareExchangeWeak,
     Function::kSubgroupBallot,
+    Function::kSubgroupBroadcast,
     Function::kTintMaterialize,
 };
 
@@ -407,6 +409,7 @@
     "atomicExchange",
     "atomicCompareExchangeWeak",
     "subgroupBallot",
+    "subgroupBroadcast",
     "_tint_materialize",
 };
 
diff --git a/src/tint/lang/core/intrinsic/data/data.cc b/src/tint/lang/core/intrinsic/data/data.cc
index d423120..5f92989 100644
--- a/src/tint/lang/core/intrinsic/data/data.cc
+++ b/src/tint/lang/core/intrinsic/data/data.cc
@@ -4141,39 +4141,39 @@
   },
   {
     /* [348] */
-    /* usage */ core::ParameterUsage::kNone,
+    /* usage */ core::ParameterUsage::kValue,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(2),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
     /* [349] */
+    /* usage */ core::ParameterUsage::kSourceLaneIndex,
+    /* type_matcher_indices */ TypeMatcherIndicesIndex(21),
+    /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
+  },
+  {
+    /* [350] */
+    /* usage */ core::ParameterUsage::kNone,
+    /* type_matcher_indices */ TypeMatcherIndicesIndex(2),
+    /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
+  },
+  {
+    /* [351] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(6),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(1),
   },
   {
-    /* [350] */
+    /* [352] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(82),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(1),
   },
   {
-    /* [351] */
-    /* usage */ core::ParameterUsage::kNone,
-    /* type_matcher_indices */ TypeMatcherIndicesIndex(12),
-    /* number_matcher_indices */ NumberMatcherIndicesIndex(2),
-  },
-  {
-    /* [352] */
-    /* usage */ core::ParameterUsage::kNone,
-    /* type_matcher_indices */ TypeMatcherIndicesIndex(12),
-    /* number_matcher_indices */ NumberMatcherIndicesIndex(2),
-  },
-  {
     /* [353] */
     /* usage */ core::ParameterUsage::kNone,
-    /* type_matcher_indices */ TypeMatcherIndicesIndex(2),
-    /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
+    /* type_matcher_indices */ TypeMatcherIndicesIndex(12),
+    /* number_matcher_indices */ NumberMatcherIndicesIndex(2),
   },
   {
     /* [354] */
@@ -4184,323 +4184,335 @@
   {
     /* [355] */
     /* usage */ core::ParameterUsage::kNone,
-    /* type_matcher_indices */ TypeMatcherIndicesIndex(6),
-    /* number_matcher_indices */ NumberMatcherIndicesIndex(1),
+    /* type_matcher_indices */ TypeMatcherIndicesIndex(2),
+    /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
     /* [356] */
     /* usage */ core::ParameterUsage::kNone,
-    /* type_matcher_indices */ TypeMatcherIndicesIndex(6),
-    /* number_matcher_indices */ NumberMatcherIndicesIndex(3),
-  },
-  {
-    /* [357] */
-    /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(12),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(2),
   },
   {
+    /* [357] */
+    /* usage */ core::ParameterUsage::kNone,
+    /* type_matcher_indices */ TypeMatcherIndicesIndex(6),
+    /* number_matcher_indices */ NumberMatcherIndicesIndex(1),
+  },
+  {
     /* [358] */
     /* usage */ core::ParameterUsage::kNone,
-    /* type_matcher_indices */ TypeMatcherIndicesIndex(12),
-    /* number_matcher_indices */ NumberMatcherIndicesIndex(22),
+    /* type_matcher_indices */ TypeMatcherIndicesIndex(6),
+    /* number_matcher_indices */ NumberMatcherIndicesIndex(3),
   },
   {
     /* [359] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(12),
-    /* number_matcher_indices */ NumberMatcherIndicesIndex(3),
+    /* number_matcher_indices */ NumberMatcherIndicesIndex(2),
   },
   {
     /* [360] */
+    /* usage */ core::ParameterUsage::kNone,
+    /* type_matcher_indices */ TypeMatcherIndicesIndex(12),
+    /* number_matcher_indices */ NumberMatcherIndicesIndex(22),
+  },
+  {
+    /* [361] */
+    /* usage */ core::ParameterUsage::kNone,
+    /* type_matcher_indices */ TypeMatcherIndicesIndex(12),
+    /* number_matcher_indices */ NumberMatcherIndicesIndex(3),
+  },
+  {
+    /* [362] */
     /* usage */ core::ParameterUsage::kXy,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(70),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [361] */
+    /* [363] */
     /* usage */ core::ParameterUsage::kZw,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(70),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [362] */
+    /* [364] */
     /* usage */ core::ParameterUsage::kXyz,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(10),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [363] */
+    /* [365] */
     /* usage */ core::ParameterUsage::kW,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(2),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [364] */
+    /* [366] */
     /* usage */ core::ParameterUsage::kX,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(2),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [365] */
+    /* [367] */
     /* usage */ core::ParameterUsage::kZyw,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(10),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [366] */
+    /* [368] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(0),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(0),
   },
   {
-    /* [367] */
+    /* [369] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(12),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(1),
   },
   {
-    /* [368] */
+    /* [370] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(15),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [369] */
+    /* [371] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(14),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(1),
   },
   {
-    /* [370] */
+    /* [372] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(26),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [371] */
+    /* [373] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(28),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [372] */
+    /* [374] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(30),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(6),
   },
   {
-    /* [373] */
+    /* [375] */
     /* usage */ core::ParameterUsage::kTexture,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(165),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(2),
   },
   {
-    /* [374] */
+    /* [376] */
     /* usage */ core::ParameterUsage::kTexture,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(166),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(2),
   },
   {
-    /* [375] */
+    /* [377] */
     /* usage */ core::ParameterUsage::kTexture,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(167),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(2),
   },
   {
-    /* [376] */
+    /* [378] */
     /* usage */ core::ParameterUsage::kTexture,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(168),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(2),
   },
   {
-    /* [377] */
+    /* [379] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(53),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [378] */
+    /* [380] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(87),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [379] */
+    /* [381] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(76),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [380] */
+    /* [382] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(78),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [381] */
+    /* [383] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(98),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [382] */
+    /* [384] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(104),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [383] */
+    /* [385] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(108),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [384] */
+    /* [386] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(106),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [385] */
+    /* [387] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(110),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [386] */
+    /* [388] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(114),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [387] */
+    /* [389] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(112),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [388] */
+    /* [390] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(116),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [389] */
+    /* [391] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(120),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [390] */
+    /* [392] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(118),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [391] */
+    /* [393] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(122),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [392] */
+    /* [394] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(126),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [393] */
+    /* [395] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(124),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [394] */
+    /* [396] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(128),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [395] */
+    /* [397] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(132),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [396] */
+    /* [398] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(130),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [397] */
+    /* [399] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(134),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [398] */
+    /* [400] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(138),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [399] */
+    /* [401] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(136),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [400] */
+    /* [402] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(140),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [401] */
+    /* [403] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(144),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [402] */
+    /* [404] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(142),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [403] */
+    /* [405] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(146),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [404] */
+    /* [406] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(150),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [405] */
+    /* [407] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(148),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [406] */
+    /* [408] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(152),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [407] */
+    /* [409] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(156),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
   },
   {
-    /* [408] */
+    /* [410] */
     /* usage */ core::ParameterUsage::kNone,
     /* type_matcher_indices */ TypeMatcherIndicesIndex(154),
     /* number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
@@ -5158,7 +5170,7 @@
     /* num_template_numbers */ 2,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(6),
-    /* parameters */ ParameterIndex(373),
+    /* parameters */ ParameterIndex(375),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(35),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(/* invalid */),
@@ -5171,7 +5183,7 @@
     /* num_template_numbers */ 2,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(6),
-    /* parameters */ ParameterIndex(374),
+    /* parameters */ ParameterIndex(376),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(34),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(/* invalid */),
@@ -5184,7 +5196,7 @@
     /* num_template_numbers */ 2,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(6),
-    /* parameters */ ParameterIndex(375),
+    /* parameters */ ParameterIndex(377),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(34),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(/* invalid */),
@@ -5197,7 +5209,7 @@
     /* num_template_numbers */ 2,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(6),
-    /* parameters */ ParameterIndex(376),
+    /* parameters */ ParameterIndex(378),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(40),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(/* invalid */),
@@ -5600,7 +5612,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(27),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(360),
+    /* parameters */ ParameterIndex(362),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(50),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(102),
@@ -5613,7 +5625,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(27),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(362),
+    /* parameters */ ParameterIndex(364),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(50),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(102),
@@ -5626,7 +5638,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(27),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(364),
+    /* parameters */ ParameterIndex(366),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(50),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(102),
@@ -5639,7 +5651,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(14),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(381),
+    /* parameters */ ParameterIndex(383),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(28),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -5652,7 +5664,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(16),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(381),
+    /* parameters */ ParameterIndex(383),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(100),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -5665,7 +5677,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(18),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(381),
+    /* parameters */ ParameterIndex(383),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(72),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -5678,7 +5690,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(20),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(381),
+    /* parameters */ ParameterIndex(383),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(74),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -5691,7 +5703,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(22),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(381),
+    /* parameters */ ParameterIndex(383),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(102),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -6484,7 +6496,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(14),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(380),
+    /* parameters */ ParameterIndex(382),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(54),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -6497,7 +6509,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(16),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(380),
+    /* parameters */ ParameterIndex(382),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(92),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -6510,7 +6522,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(18),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(380),
+    /* parameters */ ParameterIndex(382),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(64),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -6523,7 +6535,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(20),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(380),
+    /* parameters */ ParameterIndex(382),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(40),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -6536,7 +6548,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(22),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(380),
+    /* parameters */ ParameterIndex(382),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(94),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -6744,7 +6756,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(14),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(379),
+    /* parameters */ ParameterIndex(381),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(26),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -6757,7 +6769,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(16),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(379),
+    /* parameters */ ParameterIndex(381),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(86),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -6770,7 +6782,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(18),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(379),
+    /* parameters */ ParameterIndex(381),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(52),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -6783,7 +6795,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(20),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(379),
+    /* parameters */ ParameterIndex(381),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(34),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -6796,7 +6808,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(22),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(379),
+    /* parameters */ ParameterIndex(381),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(88),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -6848,7 +6860,7 @@
     /* num_template_numbers */ 1,
     /* template_types */ TemplateTypeIndex(24),
     /* template_numbers */ TemplateNumberIndex(4),
-    /* parameters */ ParameterIndex(348),
+    /* parameters */ ParameterIndex(350),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(6),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(1),
     /* const_eval_fn */ ConstEvalFunctionIndex(79),
@@ -6861,7 +6873,7 @@
     /* num_template_numbers */ 2,
     /* template_types */ TemplateTypeIndex(10),
     /* template_numbers */ TemplateNumberIndex(4),
-    /* parameters */ ParameterIndex(353),
+    /* parameters */ ParameterIndex(355),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(12),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(2),
     /* const_eval_fn */ ConstEvalFunctionIndex(79),
@@ -6874,7 +6886,7 @@
     /* num_template_numbers */ 2,
     /* template_types */ TemplateTypeIndex(10),
     /* template_numbers */ TemplateNumberIndex(4),
-    /* parameters */ ParameterIndex(352),
+    /* parameters */ ParameterIndex(354),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(12),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(2),
     /* const_eval_fn */ ConstEvalFunctionIndex(79),
@@ -6887,7 +6899,7 @@
     /* num_template_numbers */ 2,
     /* template_types */ TemplateTypeIndex(10),
     /* template_numbers */ TemplateNumberIndex(1),
-    /* parameters */ ParameterIndex(354),
+    /* parameters */ ParameterIndex(356),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(6),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(3),
     /* const_eval_fn */ ConstEvalFunctionIndex(80),
@@ -6900,7 +6912,7 @@
     /* num_template_numbers */ 2,
     /* template_types */ TemplateTypeIndex(10),
     /* template_numbers */ TemplateNumberIndex(1),
-    /* parameters */ ParameterIndex(356),
+    /* parameters */ ParameterIndex(358),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(6),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(1),
     /* const_eval_fn */ ConstEvalFunctionIndex(81),
@@ -6913,7 +6925,7 @@
     /* num_template_numbers */ 3,
     /* template_types */ TemplateTypeIndex(10),
     /* template_numbers */ TemplateNumberIndex(0),
-    /* parameters */ ParameterIndex(358),
+    /* parameters */ ParameterIndex(360),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(12),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(20),
     /* const_eval_fn */ ConstEvalFunctionIndex(82),
@@ -7381,7 +7393,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(36),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(382),
+    /* parameters */ ParameterIndex(384),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(104),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(73),
@@ -7420,7 +7432,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(16),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(383),
+    /* parameters */ ParameterIndex(385),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(106),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -7433,7 +7445,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(14),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(384),
+    /* parameters */ ParameterIndex(386),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(108),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -7459,7 +7471,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(36),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(385),
+    /* parameters */ ParameterIndex(387),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(110),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(73),
@@ -7498,7 +7510,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(16),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(386),
+    /* parameters */ ParameterIndex(388),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(112),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -7511,7 +7523,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(14),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(387),
+    /* parameters */ ParameterIndex(389),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(114),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -7537,7 +7549,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(36),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(388),
+    /* parameters */ ParameterIndex(390),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(116),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(73),
@@ -7576,7 +7588,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(16),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(389),
+    /* parameters */ ParameterIndex(391),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(118),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -7589,7 +7601,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(14),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(390),
+    /* parameters */ ParameterIndex(392),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(120),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -7615,7 +7627,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(36),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(391),
+    /* parameters */ ParameterIndex(393),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(122),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(73),
@@ -7654,7 +7666,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(16),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(392),
+    /* parameters */ ParameterIndex(394),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(124),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -7667,7 +7679,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(14),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(393),
+    /* parameters */ ParameterIndex(395),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(126),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -7693,7 +7705,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(36),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(394),
+    /* parameters */ ParameterIndex(396),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(128),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(73),
@@ -7732,7 +7744,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(16),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(395),
+    /* parameters */ ParameterIndex(397),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(130),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -7745,7 +7757,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(14),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(396),
+    /* parameters */ ParameterIndex(398),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(132),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -7771,7 +7783,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(36),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(397),
+    /* parameters */ ParameterIndex(399),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(134),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(73),
@@ -7810,7 +7822,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(16),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(398),
+    /* parameters */ ParameterIndex(400),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(136),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -7823,7 +7835,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(14),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(399),
+    /* parameters */ ParameterIndex(401),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(138),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -7849,7 +7861,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(36),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(400),
+    /* parameters */ ParameterIndex(402),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(140),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(73),
@@ -7888,7 +7900,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(16),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(401),
+    /* parameters */ ParameterIndex(403),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(142),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -7901,7 +7913,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(14),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(402),
+    /* parameters */ ParameterIndex(404),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(144),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -7927,7 +7939,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(36),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(403),
+    /* parameters */ ParameterIndex(405),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(146),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(73),
@@ -7966,7 +7978,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(16),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(404),
+    /* parameters */ ParameterIndex(406),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(148),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -7979,7 +7991,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(14),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(405),
+    /* parameters */ ParameterIndex(407),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(150),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -8005,7 +8017,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(36),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(406),
+    /* parameters */ ParameterIndex(408),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(152),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(73),
@@ -8044,7 +8056,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(16),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(407),
+    /* parameters */ ParameterIndex(409),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(154),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -8057,7 +8069,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(14),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(408),
+    /* parameters */ ParameterIndex(410),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(156),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(99),
@@ -8122,7 +8134,7 @@
     /* num_template_numbers */ 2,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(6),
-    /* parameters */ ParameterIndex(375),
+    /* parameters */ ParameterIndex(377),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(35),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(/* invalid */),
@@ -8174,7 +8186,7 @@
     /* num_template_numbers */ 1,
     /* template_types */ TemplateTypeIndex(24),
     /* template_numbers */ TemplateNumberIndex(4),
-    /* parameters */ ParameterIndex(348),
+    /* parameters */ ParameterIndex(350),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(6),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(1),
     /* const_eval_fn */ ConstEvalFunctionIndex(77),
@@ -8187,7 +8199,7 @@
     /* num_template_numbers */ 2,
     /* template_types */ TemplateTypeIndex(10),
     /* template_numbers */ TemplateNumberIndex(4),
-    /* parameters */ ParameterIndex(351),
+    /* parameters */ ParameterIndex(353),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(12),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(2),
     /* const_eval_fn */ ConstEvalFunctionIndex(77),
@@ -8239,7 +8251,7 @@
     /* num_template_numbers */ 1,
     /* template_types */ TemplateTypeIndex(24),
     /* template_numbers */ TemplateNumberIndex(4),
-    /* parameters */ ParameterIndex(348),
+    /* parameters */ ParameterIndex(350),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(6),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(1),
     /* const_eval_fn */ ConstEvalFunctionIndex(78),
@@ -8252,7 +8264,7 @@
     /* num_template_numbers */ 2,
     /* template_types */ TemplateTypeIndex(10),
     /* template_numbers */ TemplateNumberIndex(4),
-    /* parameters */ ParameterIndex(351),
+    /* parameters */ ParameterIndex(353),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(12),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(2),
     /* const_eval_fn */ ConstEvalFunctionIndex(78),
@@ -8304,7 +8316,7 @@
     /* num_template_numbers */ 1,
     /* template_types */ TemplateTypeIndex(24),
     /* template_numbers */ TemplateNumberIndex(4),
-    /* parameters */ ParameterIndex(348),
+    /* parameters */ ParameterIndex(350),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(6),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(1),
     /* const_eval_fn */ ConstEvalFunctionIndex(83),
@@ -8356,7 +8368,7 @@
     /* num_template_numbers */ 1,
     /* template_types */ TemplateTypeIndex(24),
     /* template_numbers */ TemplateNumberIndex(4),
-    /* parameters */ ParameterIndex(348),
+    /* parameters */ ParameterIndex(350),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(6),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(1),
     /* const_eval_fn */ ConstEvalFunctionIndex(84),
@@ -8564,7 +8576,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(377),
+    /* parameters */ ParameterIndex(379),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(53),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(73),
@@ -8642,7 +8654,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(368),
+    /* parameters */ ParameterIndex(370),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(15),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(73),
@@ -8681,7 +8693,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(378),
+    /* parameters */ ParameterIndex(380),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(87),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(73),
@@ -9240,7 +9252,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(368),
+    /* parameters */ ParameterIndex(370),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(15),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(/* invalid */),
@@ -9253,7 +9265,7 @@
     /* num_template_numbers */ 1,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(4),
-    /* parameters */ ParameterIndex(369),
+    /* parameters */ ParameterIndex(371),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(14),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(1),
     /* const_eval_fn */ ConstEvalFunctionIndex(/* invalid */),
@@ -9760,7 +9772,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(368),
+    /* parameters */ ParameterIndex(370),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(15),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(49),
@@ -9773,7 +9785,7 @@
     /* num_template_numbers */ 1,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(4),
-    /* parameters */ ParameterIndex(369),
+    /* parameters */ ParameterIndex(371),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(14),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(1),
     /* const_eval_fn */ ConstEvalFunctionIndex(49),
@@ -10449,7 +10461,7 @@
     /* num_template_numbers */ 1,
     /* template_types */ TemplateTypeIndex(29),
     /* template_numbers */ TemplateNumberIndex(4),
-    /* parameters */ ParameterIndex(349),
+    /* parameters */ ParameterIndex(351),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(6),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(1),
     /* const_eval_fn */ ConstEvalFunctionIndex(96),
@@ -10475,7 +10487,7 @@
     /* num_template_numbers */ 1,
     /* template_types */ TemplateTypeIndex(29),
     /* template_numbers */ TemplateNumberIndex(4),
-    /* parameters */ ParameterIndex(349),
+    /* parameters */ ParameterIndex(351),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(6),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(1),
     /* const_eval_fn */ ConstEvalFunctionIndex(97),
@@ -10488,7 +10500,7 @@
     /* num_template_numbers */ 1,
     /* template_types */ TemplateTypeIndex(25),
     /* template_numbers */ TemplateNumberIndex(7),
-    /* parameters */ ParameterIndex(366),
+    /* parameters */ ParameterIndex(368),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(35),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(/* invalid */),
@@ -10514,7 +10526,7 @@
     /* num_template_numbers */ 1,
     /* template_types */ TemplateTypeIndex(10),
     /* template_numbers */ TemplateNumberIndex(4),
-    /* parameters */ ParameterIndex(367),
+    /* parameters */ ParameterIndex(369),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(2),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(19),
@@ -10592,7 +10604,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(370),
+    /* parameters */ ParameterIndex(372),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(35),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(43),
@@ -10605,7 +10617,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(370),
+    /* parameters */ ParameterIndex(372),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(35),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(44),
@@ -10618,7 +10630,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(370),
+    /* parameters */ ParameterIndex(372),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(35),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(45),
@@ -10631,7 +10643,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(371),
+    /* parameters */ ParameterIndex(373),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(35),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(46),
@@ -10644,7 +10656,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(/* invalid */),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(371),
+    /* parameters */ ParameterIndex(373),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(35),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(47),
@@ -10696,7 +10708,7 @@
     /* num_template_numbers */ 2,
     /* template_types */ TemplateTypeIndex(10),
     /* template_numbers */ TemplateNumberIndex(3),
-    /* parameters */ ParameterIndex(351),
+    /* parameters */ ParameterIndex(353),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(12),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(3),
     /* const_eval_fn */ ConstEvalFunctionIndex(66),
@@ -10774,7 +10786,7 @@
     /* num_template_numbers */ 0,
     /* template_types */ TemplateTypeIndex(25),
     /* template_numbers */ TemplateNumberIndex(/* invalid */),
-    /* parameters */ ParameterIndex(372),
+    /* parameters */ ParameterIndex(374),
     /* return_type_matcher_indices */ TypeMatcherIndicesIndex(2),
     /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
     /* const_eval_fn */ ConstEvalFunctionIndex(/* invalid */),
@@ -10846,6 +10858,19 @@
   },
   {
     /* [460] */
+    /* flags */ OverloadFlags(OverloadFlag::kIsBuiltin, OverloadFlag::kSupportsComputePipeline, OverloadFlag::kMustUse),
+    /* num_parameters */ 2,
+    /* num_template_types */ 2,
+    /* num_template_numbers */ 0,
+    /* template_types */ TemplateTypeIndex(12),
+    /* template_numbers */ TemplateNumberIndex(/* invalid */),
+    /* parameters */ ParameterIndex(348),
+    /* return_type_matcher_indices */ TypeMatcherIndicesIndex(2),
+    /* return_number_matcher_indices */ NumberMatcherIndicesIndex(/* invalid */),
+    /* const_eval_fn */ ConstEvalFunctionIndex(/* invalid */),
+  },
+  {
+    /* [461] */
     /* flags */ OverloadFlags(OverloadFlag::kIsBuiltin, OverloadFlag::kSupportsVertexPipeline, OverloadFlag::kSupportsFragmentPipeline, OverloadFlag::kSupportsComputePipeline),
     /* num_parameters */ 1,
     /* num_template_types */ 1,
@@ -10858,7 +10883,7 @@
     /* const_eval_fn */ ConstEvalFunctionIndex(73),
   },
   {
-    /* [461] */
+    /* [462] */
     /* flags */ OverloadFlags(OverloadFlag::kIsOperator, OverloadFlag::kSupportsVertexPipeline, OverloadFlag::kSupportsFragmentPipeline, OverloadFlag::kSupportsComputePipeline, OverloadFlag::kMustUse),
     /* num_parameters */ 2,
     /* num_template_types */ 0,
@@ -10871,7 +10896,7 @@
     /* const_eval_fn */ ConstEvalFunctionIndex(88),
   },
   {
-    /* [462] */
+    /* [463] */
     /* flags */ OverloadFlags(OverloadFlag::kIsOperator, OverloadFlag::kSupportsVertexPipeline, OverloadFlag::kSupportsFragmentPipeline, OverloadFlag::kSupportsComputePipeline, OverloadFlag::kMustUse),
     /* num_parameters */ 2,
     /* num_template_types */ 0,
@@ -10884,7 +10909,7 @@
     /* const_eval_fn */ ConstEvalFunctionIndex(89),
   },
   {
-    /* [463] */
+    /* [464] */
     /* flags */ OverloadFlags(OverloadFlag::kIsConverter, OverloadFlag::kSupportsVertexPipeline, OverloadFlag::kSupportsFragmentPipeline, OverloadFlag::kSupportsComputePipeline, OverloadFlag::kMustUse),
     /* num_parameters */ 1,
     /* num_template_types */ 1,
@@ -11798,10 +11823,16 @@
   },
   {
     /* [115] */
-    /* fn _tint_materialize<T>(T) -> T */
+    /* fn subgroupBroadcast<T : fiu32, L : iu32>(value: T, @const sourceLaneIndex: L) -> T */
     /* num overloads */ 1,
     /* overloads */ OverloadIndex(460),
   },
+  {
+    /* [116] */
+    /* fn _tint_materialize<T>(T) -> T */
+    /* num overloads */ 1,
+    /* overloads */ OverloadIndex(461),
+  },
 };
 
 constexpr IntrinsicInfo kUnaryOperators[] = {
@@ -11913,13 +11944,13 @@
     /* [8] */
     /* op &&(bool, bool) -> bool */
     /* num overloads */ 1,
-    /* overloads */ OverloadIndex(461),
+    /* overloads */ OverloadIndex(462),
   },
   {
     /* [9] */
     /* op ||(bool, bool) -> bool */
     /* num overloads */ 1,
-    /* overloads */ OverloadIndex(462),
+    /* overloads */ OverloadIndex(463),
   },
   {
     /* [10] */
@@ -12194,7 +12225,7 @@
     /* [17] */
     /* conv packedVec3<T : concrete_scalar>(vec3<T>) -> packedVec3<T> */
     /* num overloads */ 1,
-    /* overloads */ OverloadIndex(463),
+    /* overloads */ OverloadIndex(464),
   },
 };
 
diff --git a/src/tint/lang/core/parameter_usage.cc b/src/tint/lang/core/parameter_usage.cc
index 2a42c49..c5ddc1c 100644
--- a/src/tint/lang/core/parameter_usage.cc
+++ b/src/tint/lang/core/parameter_usage.cc
@@ -51,6 +51,8 @@
             return "sample_index";
         case ParameterUsage::kSampler:
             return "sampler";
+        case ParameterUsage::kSourceLaneIndex:
+            return "sourceLaneIndex";
         case ParameterUsage::kTexture:
             return "texture";
         case ParameterUsage::kValue:
diff --git a/src/tint/lang/core/parameter_usage.h b/src/tint/lang/core/parameter_usage.h
index 39e0207..fdf355c 100644
--- a/src/tint/lang/core/parameter_usage.h
+++ b/src/tint/lang/core/parameter_usage.h
@@ -45,6 +45,7 @@
     kOffset,
     kSampleIndex,
     kSampler,
+    kSourceLaneIndex,
     kTexture,
     kValue,
     kW,
diff --git a/src/tint/lang/spirv/reader/ast_parser/spirv_tools_helpers_test.h b/src/tint/lang/spirv/reader/ast_parser/spirv_tools_helpers_test.h
index 2b2800b..80421af 100644
--- a/src/tint/lang/spirv/reader/ast_parser/spirv_tools_helpers_test.h
+++ b/src/tint/lang/spirv/reader/ast_parser/spirv_tools_helpers_test.h
@@ -15,6 +15,7 @@
 #ifndef SRC_TINT_LANG_SPIRV_READER_AST_PARSER_SPIRV_TOOLS_HELPERS_TEST_H_
 #define SRC_TINT_LANG_SPIRV_READER_AST_PARSER_SPIRV_TOOLS_HELPERS_TEST_H_
 
+#include <cstdint>
 #include <string>
 #include <vector>
 
diff --git a/src/tint/lang/spirv/writer/if_test.cc b/src/tint/lang/spirv/writer/if_test.cc
index 152e583..50cf1e5 100644
--- a/src/tint/lang/spirv/writer/if_test.cc
+++ b/src/tint/lang/spirv/writer/if_test.cc
@@ -288,5 +288,49 @@
 )");
 }
 
+TEST_F(SpirvWriterTest, If_Phi_Nested) {
+    auto* func = b.Function("foo", ty.i32());
+    b.Append(func->Block(), [&] {
+        auto* outer = b.If(true);
+        outer->SetResults(b.InstructionResult(ty.i32()));
+        b.Append(outer->True(), [&] {  //
+            auto* inner = b.If(true);
+            inner->SetResults(b.InstructionResult(ty.i32()));
+            b.Append(inner->True(), [&] {  //
+                b.ExitIf(inner, 10_i);
+            });
+            b.Append(inner->False(), [&] {  //
+                b.ExitIf(inner, 20_i);
+            });
+            b.ExitIf(outer, inner->Result());
+        });
+        b.Append(outer->False(), [&] {  //
+            b.ExitIf(outer, 30_i);
+        });
+        b.Return(func, outer);
+    });
+
+    ASSERT_TRUE(Generate()) << Error() << output_;
+    EXPECT_INST(R"(
+               OpSelectionMerge %5 None
+               OpBranchConditional %true %6 %7
+          %6 = OpLabel
+               OpSelectionMerge %10 None
+               OpBranchConditional %true %11 %12
+         %11 = OpLabel
+               OpBranch %10
+         %12 = OpLabel
+               OpBranch %10
+         %10 = OpLabel
+         %13 = OpPhi %int %int_10 %11 %int_20 %12
+               OpBranch %5
+          %7 = OpLabel
+               OpBranch %5
+          %5 = OpLabel
+         %16 = OpPhi %int %int_30 %7 %13 %10
+               OpReturnValue %16
+)");
+}
+
 }  // namespace
 }  // namespace tint::spirv::writer
diff --git a/src/tint/lang/spirv/writer/loop_test.cc b/src/tint/lang/spirv/writer/loop_test.cc
index 1a44fdd..61760b5 100644
--- a/src/tint/lang/spirv/writer/loop_test.cc
+++ b/src/tint/lang/spirv/writer/loop_test.cc
@@ -330,7 +330,7 @@
         auto* loop = b.Loop();
 
         b.Append(loop->Initializer(), [&] {  //
-            b.NextIteration(loop, 1_i, false);
+            b.NextIteration(loop, 1_i);
         });
 
         auto* loop_param = b.BlockParam(ty.i32());
@@ -427,5 +427,137 @@
 )");
 }
 
+TEST_F(SpirvWriterTest, Loop_Phi_NestedIf) {
+    auto* func = b.Function("foo", ty.void_());
+
+    b.Append(func->Block(), [&] {
+        auto* loop = b.Loop();
+        b.Append(loop->Initializer(), [&] {  //
+            b.NextIteration(loop, 1_i);
+        });
+
+        auto* loop_param = b.BlockParam(ty.i32());
+        loop->Body()->SetParams({loop_param});
+        b.Append(loop->Body(), [&] {
+            auto* inner = b.If(true);
+            inner->SetResults(b.InstructionResult(ty.i32()));
+            b.Append(inner->True(), [&] {  //
+                b.ExitIf(inner, 10_i);
+            });
+            b.Append(inner->False(), [&] {  //
+                b.ExitIf(inner, 20_i);
+            });
+            b.Continue(loop, inner->Result());
+        });
+
+        auto* cont_param = b.BlockParam(ty.i32());
+        loop->Continuing()->SetParams({cont_param});
+        b.Append(loop->Continuing(), [&] {
+            auto* cmp = b.GreaterThan(ty.bool_(), cont_param, 5_i);
+            b.BreakIf(loop, cmp, cont_param);
+        });
+
+        b.Return(func);
+    });
+
+    ASSERT_TRUE(Generate()) << Error() << output_;
+    EXPECT_INST(R"(
+          %4 = OpLabel
+               OpBranch %5
+          %5 = OpLabel
+               OpBranch %8
+          %8 = OpLabel
+         %11 = OpPhi %int %int_1 %5 %13 %7
+               OpLoopMerge %9 %7 None
+               OpBranch %6
+          %6 = OpLabel
+               OpSelectionMerge %14 None
+               OpBranchConditional %true %15 %16
+         %15 = OpLabel
+               OpBranch %14
+         %16 = OpLabel
+               OpBranch %14
+         %14 = OpLabel
+         %19 = OpPhi %int %int_10 %15 %int_20 %16
+               OpBranch %7
+          %7 = OpLabel
+         %13 = OpPhi %int %19 %14
+         %22 = OpSGreaterThan %bool %13 %int_5
+               OpBranchConditional %22 %9 %8
+          %9 = OpLabel
+               OpReturn
+               OpFunctionEnd
+)");
+}
+
+TEST_F(SpirvWriterTest, Loop_Phi_NestedLoop) {
+    auto* func = b.Function("foo", ty.void_());
+
+    b.Append(func->Block(), [&] {
+        auto* outer = b.Loop();
+        b.Append(outer->Initializer(), [&] {  //
+            b.NextIteration(outer, 1_i);
+        });
+
+        auto* outer_param = b.BlockParam(ty.i32());
+        outer->Body()->SetParams({outer_param});
+        b.Append(outer->Body(), [&] {
+            auto* inner = b.Loop();
+            b.Append(inner->Initializer(), [&] {  //
+                b.NextIteration(inner);
+            });
+            b.Append(inner->Body(), [&] {  //
+                b.Continue(inner);
+            });
+            b.Append(inner->Continuing(), [&] {  //
+                b.BreakIf(inner, true);
+            });
+
+            b.Continue(outer, outer_param);
+        });
+
+        auto* cont_param = b.BlockParam(ty.i32());
+        outer->Continuing()->SetParams({cont_param});
+        b.Append(outer->Continuing(), [&] {
+            auto* cmp = b.GreaterThan(ty.bool_(), cont_param, 5_i);
+            b.BreakIf(outer, cmp, cont_param);
+        });
+
+        b.Return(func);
+    });
+
+    ASSERT_TRUE(Generate()) << Error() << output_;
+    EXPECT_INST(R"(
+          %4 = OpLabel
+               OpBranch %5
+          %5 = OpLabel
+               OpBranch %8
+          %8 = OpLabel
+         %11 = OpPhi %int %int_1 %5 %13 %7
+               OpLoopMerge %9 %7 None
+               OpBranch %6
+          %6 = OpLabel
+               OpBranch %14
+         %14 = OpLabel
+               OpBranch %17
+         %17 = OpLabel
+               OpLoopMerge %18 %16 None
+               OpBranch %15
+         %15 = OpLabel
+               OpBranch %16
+         %16 = OpLabel
+               OpBranchConditional %true %18 %17
+         %18 = OpLabel
+               OpBranch %7
+          %7 = OpLabel
+         %13 = OpPhi %int %11 %18
+         %21 = OpSGreaterThan %bool %13 %int_5
+               OpBranchConditional %21 %9 %8
+          %9 = OpLabel
+               OpReturn
+               OpFunctionEnd
+)");
+}
+
 }  // namespace
 }  // namespace tint::spirv::writer
diff --git a/src/tint/lang/spirv/writer/printer/printer.cc b/src/tint/lang/spirv/writer/printer/printer.cc
index eba5239..b098a86 100644
--- a/src/tint/lang/spirv/writer/printer/printer.cc
+++ b/src/tint/lang/spirv/writer/printer/printer.cc
@@ -748,7 +748,7 @@
         for (auto* incoming : block->InboundSiblingBranches()) {
             auto* arg = incoming->Args()[param_idx];
             ops.push_back(Value(arg));
-            ops.push_back(Label(incoming->Block()));
+            ops.push_back(GetTerminatorBlockLabel(incoming));
         }
 
         current_function_.push_inst(spv::Op::OpPhi, std::move(ops));
@@ -848,7 +848,7 @@
     // 2. branches somewhere instead of exiting the loop (e.g. return or break), or
     // 3. the if returns a value
     // Otherwise we skip them and branch straight to the merge block.
-    uint32_t merge_label = module_.NextId();
+    uint32_t merge_label = GetMergeLabel(i);
     TINT_SCOPED_ASSIGNMENT(if_merge_label_, merge_label);
 
     uint32_t true_label = merge_label;
@@ -1697,7 +1697,7 @@
     auto header_label = module_.NextId();
     TINT_SCOPED_ASSIGNMENT(loop_header_label_, header_label);
 
-    auto merge_label = module_.NextId();
+    auto merge_label = GetMergeLabel(loop);
     TINT_SCOPED_ASSIGNMENT(loop_merge_label_, merge_label);
 
     if (init_label != 0) {
@@ -1762,7 +1762,7 @@
         }
     }
 
-    uint32_t merge_label = module_.NextId();
+    uint32_t merge_label = GetMergeLabel(swtch);
     TINT_SCOPED_ASSIGNMENT(switch_merge_label_, merge_label);
 
     // Emit the OpSelectionMerge and OpSwitch instructions.
@@ -1935,7 +1935,7 @@
         Vector<Branch, 8> branches;
         branches.Reserve(inst->Exits().Count());
         for (auto& exit : inst->Exits()) {
-            branches.Push(Branch{Label(exit->Block()), exit->Args()[index]});
+            branches.Push(Branch{GetTerminatorBlockLabel(exit), exit->Args()[index]});
         }
         branches.Sort();  // Sort the branches by label to ensure deterministic output
 
@@ -1952,6 +1952,26 @@
     }
 }
 
+uint32_t Printer::GetMergeLabel(core::ir::ControlInstruction* ci) {
+    return merge_block_labels_.GetOrCreate(ci, [&] { return module_.NextId(); });
+}
+
+uint32_t Printer::GetTerminatorBlockLabel(core::ir::Terminator* t) {
+    // Walk backwards from `t` until we find a control instruction.
+    auto* inst = t->prev;
+    while (inst) {
+        auto* prev = inst->prev;
+        if (auto* ci = inst->As<core::ir::ControlInstruction>()) {
+            // This is the last control instruction before `t`, so use its merge block label.
+            return GetMergeLabel(ci);
+        }
+        inst = prev;
+    }
+
+    // There were no control instructions before `t`, so use the label of the parent block.
+    return Label(t->Block());
+}
+
 uint32_t Printer::TexelFormat(const core::TexelFormat format) {
     switch (format) {
         case core::TexelFormat::kBgra8Unorm:
diff --git a/src/tint/lang/spirv/writer/printer/printer.h b/src/tint/lang/spirv/writer/printer/printer.h
index f991bfe..2f0d53a 100644
--- a/src/tint/lang/spirv/writer/printer/printer.h
+++ b/src/tint/lang/spirv/writer/printer/printer.h
@@ -272,6 +272,16 @@
     /// @param inst the flow control instruction
     void EmitExitPhis(core::ir::ControlInstruction* inst);
 
+    /// Get the ID of the label of the merge block for a control instruction.
+    /// @param ci the control instruction to get the merge label for
+    /// @returns the label ID
+    uint32_t GetMergeLabel(core::ir::ControlInstruction* ci);
+
+    /// Get the ID of the label of the block that will contain a terminator instruction.
+    /// @param t the terminator instruction to get the block label for
+    /// @returns the label ID
+    uint32_t GetTerminatorBlockLabel(core::ir::Terminator* t);
+
     core::ir::Module* ir_;
     core::ir::Builder b_;
     writer::Module module_;
@@ -323,6 +333,9 @@
     /// The map of blocks to the IDs of their label instructions.
     Hashmap<core::ir::Block*, uint32_t, 8> block_labels_;
 
+    /// The map of control instructions to the IDs of the label of their SPIR-V merge blocks.
+    Hashmap<core::ir::ControlInstruction*, uint32_t, 8> merge_block_labels_;
+
     /// The map of extended instruction set names to their result IDs.
     Hashmap<std::string_view, uint32_t, 2> imports_;
 
diff --git a/src/tint/lang/spirv/writer/switch_test.cc b/src/tint/lang/spirv/writer/switch_test.cc
index bfcefca..ef94384 100644
--- a/src/tint/lang/spirv/writer/switch_test.cc
+++ b/src/tint/lang/spirv/writer/switch_test.cc
@@ -369,5 +369,104 @@
 )");
 }
 
+TEST_F(SpirvWriterTest, Switch_Phi_NestedIf) {
+    auto* func = b.Function("foo", ty.i32());
+    b.Append(func->Block(), [&] {
+        auto* s = b.Switch(42_i);
+        s->SetResults(b.InstructionResult(ty.i32()));
+        auto* case_a = b.Case(s, Vector{core::ir::Switch::CaseSelector{b.Constant(1_i)},
+                                        core::ir::Switch::CaseSelector{nullptr}});
+        b.Append(case_a, [&] {  //
+            auto* inner = b.If(true);
+            inner->SetResults(b.InstructionResult(ty.i32()));
+            b.Append(inner->True(), [&] {  //
+                b.ExitIf(inner, 10_i);
+            });
+            b.Append(inner->False(), [&] {  //
+                b.ExitIf(inner, 20_i);
+            });
+
+            b.ExitSwitch(s, inner->Result());
+        });
+
+        auto* case_b = b.Case(s, Vector{core::ir::Switch::CaseSelector{b.Constant(2_i)}});
+        b.Append(case_b, [&] {  //
+            b.ExitSwitch(s, 20_i);
+        });
+
+        b.Return(func, s);
+    });
+
+    ASSERT_TRUE(Generate()) << Error() << output_;
+    EXPECT_INST(R"(
+          %4 = OpLabel
+               OpSelectionMerge %8 None
+               OpSwitch %int_42 %5 1 %5 2 %7
+          %5 = OpLabel
+               OpSelectionMerge %9 None
+               OpBranchConditional %true %10 %11
+         %10 = OpLabel
+               OpBranch %9
+         %11 = OpLabel
+               OpBranch %9
+          %9 = OpLabel
+         %14 = OpPhi %int %int_10 %10 %int_20 %11
+               OpBranch %8
+          %7 = OpLabel
+               OpBranch %8
+          %8 = OpLabel
+         %17 = OpPhi %int %int_20 %7 %14 %9
+               OpReturnValue %17
+               OpFunctionEnd
+)");
+}
+
+TEST_F(SpirvWriterTest, Switch_Phi_NestedSwitch) {
+    auto* func = b.Function("foo", ty.i32());
+    b.Append(func->Block(), [&] {
+        auto* outer = b.Switch(42_i);
+        outer->SetResults(b.InstructionResult(ty.i32()));
+        auto* case_a = b.Case(outer, Vector{core::ir::Switch::CaseSelector{b.Constant(1_i)},
+                                            core::ir::Switch::CaseSelector{nullptr}});
+        b.Append(case_a, [&] {  //
+            auto* inner = b.Switch(42_i);
+            auto* case_inner = b.Case(inner, Vector{core::ir::Switch::CaseSelector{b.Constant(2_i)},
+                                                    core::ir::Switch::CaseSelector{nullptr}});
+            b.Append(case_inner, [&] {  //
+                b.ExitSwitch(inner);
+            });
+
+            b.ExitSwitch(outer, 10_i);
+        });
+
+        auto* case_b = b.Case(outer, Vector{core::ir::Switch::CaseSelector{b.Constant(2_i)}});
+        b.Append(case_b, [&] {  //
+            b.ExitSwitch(outer, 20_i);
+        });
+
+        b.Return(func, outer);
+    });
+
+    ASSERT_TRUE(Generate()) << Error() << output_;
+    EXPECT_INST(R"(
+          %4 = OpLabel
+               OpSelectionMerge %8 None
+               OpSwitch %int_42 %5 1 %5 2 %7
+          %5 = OpLabel
+               OpSelectionMerge %10 None
+               OpSwitch %int_42 %9 2 %9
+          %9 = OpLabel
+               OpBranch %10
+         %10 = OpLabel
+               OpBranch %8
+          %7 = OpLabel
+               OpBranch %8
+          %8 = OpLabel
+         %11 = OpPhi %int %int_20 %7 %int_10 %10
+               OpReturnValue %11
+               OpFunctionEnd
+)");
+}
+
 }  // namespace
 }  // namespace tint::spirv::writer
diff --git a/src/tint/utils/socket/socket.cc b/src/tint/utils/socket/socket.cc
index d11624c..5ebf9ea 100644
--- a/src/tint/utils/socket/socket.cc
+++ b/src/tint/utils/socket/socket.cc
@@ -28,6 +28,7 @@
 #include <sys/socket.h>
 #include <sys/time.h>
 #include <unistd.h>
+#include <cstdio>
 #endif
 
 #if defined(_WIN32)