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possible AMDGPU alignment bug #147239

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possible AMDGPU alignment bug#147239
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A-LLVMArea: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.C-bugCategory: This is a bug.O-amdgcnTarget: the Radeon 9001XT and suchT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.
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workingjubilee
opened on Oct 1, 2025

See https://github.com/nikic/llvm-project/blob/e0b1d80e09a1818e9ef2da76ca2e928dfe92c0a7/clang/lib/CodeGen/CodeGenModule.cpp

There is a possible bug in how we handle alignment on AMDGPU targets for i128. This is most likely to cause problems with linked code across languages. I am opening this issue for tracking reasons.

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    A-LLVMArea: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.C-bugCategory: This is a bug.O-amdgcnTarget: the Radeon 9001XT and suchT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.

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