[all-commits] [llvm/llvm-project] b0ad9c: [SPIR-V] Fix `asdouble` issue in SPIRV codegen to ...

[Lucie Choi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b0ad9c293a493c5912ffee6c18191bf35095f9f7
      https://github.com/llvm/llvm-project/commit/b0ad9c293a493c5912ffee6c18191bf35095f9f7
  Author: Lucie Choi <ychoi0407 at gmail.com>
  Date:   2025-10-03 (Fri, 03 Oct 2025)

  Changed paths:
    M llvm/lib/Target/SPIRV/SPIRVLegalizePointerCast.cpp
    A llvm/test/CodeGen/SPIRV/pointers/ptrcast-bitcast.ll

  Log Message:
  -----------
  [SPIR-V] Fix `asdouble` issue in SPIRV codegen to correctly generate `OpBitCast` instruction. (#161891)

Generate `OpBitCast` instruction for pointer cast operation if the
element type is different.

The HLSL for the unit test is 
```hlsl
StructuredBuffer<uint2> In : register(t0);

RWStructuredBuffer<double2> Out : register(u2);


[numthreads(1,1,1)]
void main() {
  Out[0] = asdouble(In[0], In[1]);
}
```

Resolves https://github.com/llvm/llvm-project/issues/153513



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