llvm-project

aa57c6af - [AMDGPU] Preserve call-site attributes rebuilding an intrinsic (#201549)

[AMDGPU] Preserve call-site attributes rebuilding an intrinsic (#201549) This PR copies the original call-site attributes onto the new call. `AMDGPUInstCombineIntrinsic` uses `IC.Builder.CreateIntrinsic` to rebuild intrinsic calls. `CreateIntrinsic` only inherits attributes from the intrinsic declaration, and any call-site only attributes are silently dropped. The change is needed in both `modifyIntrinsicCall` simplifications and `simplifyAMDGCNMemoryIntrinsicDemanded`. The new test exercises both transformations firing in sequence on the same `image.sample` call. Two commits: the first adds the test that drops the attribute and then the second commit fixes the bug and the test. This fix was originally introduced in the context of waterfall intrinsics #192409, but the issue and the fix are independent.