src/tint/lang/spirv/reader/parser/var_test.cc

// Copyright 2023 The Dawn & Tint Authors
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#include "src/tint/lang/spirv/reader/parser/helper_test.h"

namespace tint::spirv::reader {
namespace {

TEST_F(SpirvParserTest, FunctionVar) {
    EXPECT_IR(R"(
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %main "main"
               OpExecutionMode %main LocalSize 1 1 1
       %void = OpTypeVoid
        %u32 = OpTypeInt 32 0
    %u32_ptr = OpTypePointer Function %u32
    %ep_type = OpTypeFunction %void
       %main = OpFunction %void None %ep_type
 %main_start = OpLabel
        %var = OpVariable %u32_ptr Function
               OpReturn
               OpFunctionEnd
)",
              R"(
%main = @compute @workgroup_size(1, 1, 1) func():void -> %b1 {
  %b1 = block {
    %2:ptr<function, u32, read_write> = var
    ret
  }
}
)");
}

TEST_F(SpirvParserTest, FunctionVar_Initializer) {
    EXPECT_IR(R"(
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %main "main"
               OpExecutionMode %main LocalSize 1 1 1
       %void = OpTypeVoid
        %u32 = OpTypeInt 32 0
     %u32_42 = OpConstant %u32 42
    %u32_ptr = OpTypePointer Function %u32
    %ep_type = OpTypeFunction %void
       %main = OpFunction %void None %ep_type
 %main_start = OpLabel
        %var = OpVariable %u32_ptr Function %u32_42
               OpReturn
               OpFunctionEnd
)",
              R"(
%main = @compute @workgroup_size(1, 1, 1) func():void -> %b1 {
  %b1 = block {
    %2:ptr<function, u32, read_write> = var, 42u
    ret
  }
}
)");
}

TEST_F(SpirvParserTest, PrivateVar) {
    EXPECT_IR(R"(
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %main "main"
               OpExecutionMode %main LocalSize 1 1 1
       %void = OpTypeVoid
        %u32 = OpTypeInt 32 0
    %u32_ptr = OpTypePointer Private %u32
    %ep_type = OpTypeFunction %void
        %var = OpVariable %u32_ptr Private
       %main = OpFunction %void None %ep_type
 %main_start = OpLabel
               OpReturn
               OpFunctionEnd
)",
              R"(
%b1 = block {  # root
  %1:ptr<private, u32, read_write> = var
}

%main = @compute @workgroup_size(1, 1, 1) func():void -> %b2 {
  %b2 = block {
    ret
  }
}
)");
}

TEST_F(SpirvParserTest, PrivateVar_Initializer) {
    EXPECT_IR(R"(
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %main "main"
               OpExecutionMode %main LocalSize 1 1 1
       %void = OpTypeVoid
        %u32 = OpTypeInt 32 0
     %u32_42 = OpConstant %u32 42
    %u32_ptr = OpTypePointer Private %u32
    %ep_type = OpTypeFunction %void
        %var = OpVariable %u32_ptr Private %u32_42
       %main = OpFunction %void None %ep_type
 %main_start = OpLabel
               OpReturn
               OpFunctionEnd
)",
              R"(
%b1 = block {  # root
  %1:ptr<private, u32, read_write> = var, 42u
}

%main = @compute @workgroup_size(1, 1, 1) func():void -> %b2 {
  %b2 = block {
    ret
  }
}
)");
}

TEST_F(SpirvParserTest, UniformVar) {
    EXPECT_IR(R"(
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %1 "main"
               OpExecutionMode %1 LocalSize 1 1 1
               OpDecorate %str Block
               OpMemberDecorate %str 0 Offset 0
               OpDecorate %6 NonWritable
               OpDecorate %6 DescriptorSet 1
               OpDecorate %6 Binding 2
       %void = OpTypeVoid
       %uint = OpTypeInt 32 0
        %str = OpTypeStruct %uint
%_ptr_Uniform_str = OpTypePointer Uniform %str
          %5 = OpTypeFunction %void
          %6 = OpVariable %_ptr_Uniform_str Uniform
          %1 = OpFunction %void None %5
          %7 = OpLabel
               OpReturn
               OpFunctionEnd
)",
              R"(
tint_symbol_1 = struct @align(4) {
  tint_symbol:u32 @offset(0)
}

%b1 = block {  # root
  %1:ptr<uniform, tint_symbol_1, read_write> = var @binding_point(1, 2)
}

%main = @compute @workgroup_size(1, 1, 1) func():void -> %b2 {
  %b2 = block {
    ret
  }
}
)");
}

}  // namespace
}  // namespace tint::spirv::reader