[all-commits] [llvm/llvm-project] 61907e: [Clang][CodeGen] Do not use the GEP result to infe...

[Yingwei Zheng via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 61907ebd764afe75aa7134627f41827e6893d6d0
      https://github.com/llvm/llvm-project/commit/61907ebd764afe75aa7134627f41827e6893d6d0
  Author: Yingwei Zheng <dtcxzyw2333 at gmail.com>
  Date:   2025-04-03 (Thu, 03 Apr 2025)

  Changed paths:
    M clang/lib/CodeGen/CGBuilder.h

  Log Message:
  -----------
  [Clang][CodeGen] Do not use the GEP result to infer offset and result type (#134221)

If `CreateConstInBoundsGEP2_32` returns a constant null/gep, the cast to
GetElementPtrInst will fail.
This patch uses two static helpers
`GEPOperator::accumulateConstantOffset/GetElementPtrInst::getIndexedType`
to infer offset and result type instead of depending on the GEP result.

This patch is extracted from
https://github.com/llvm/llvm-project/pull/130734.



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