commit ce5c2650c889910ec154401f7079473f7d90b97a
author Ben Clayton <bclayton@google.com> Wed Jan 31 19:54:48 2024 +0000
committer Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com> Wed Jan 31 19:54:48 2024 +0000
tree a658574fd4ca701c7aa01b7d6cd1fef927cb70f3
parent 7a27d6cfab9a161d8af3d0946b36970cf6694938

[tint][utils] Simplify pointer hashing

Change-Id: Ia6e46ccb81419ed9f4ef99aaeb1aef5c60a82e1a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/172021
Reviewed-by: dan sinclair <dsinclair@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>

src/tint/utils/math/hash.h

diff --git a/src/tint/utils/math/hash.h b/src/tint/utils/math/hash.h
index e143d07..43c97f4 100644
--- a/src/tint/utils/math/hash.h
+++ b/src/tint/utils/math/hash.h
@@ -122,11 +122,11 @@
     /// @param ptr the pointer to hash
     /// @returns a hash of the pointer
     size_t operator()(T* ptr) const {
-        auto hash = std::hash<T*>()(ptr);
+        auto hash = static_cast<size_t>(reinterpret_cast<uintptr_t>(ptr));
 #ifdef TINT_HASH_SEED
         hash ^= static_cast<uint32_t>(TINT_HASH_SEED);
 #endif
-        return hash ^ (hash >> 4);
+        return hash >> 4;
     }
 };