[all-commits] [llvm/llvm-project] 2adcec: [InstCombine] Simplify with.overflow intrinsics wi...

[Yingwei Zheng via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2adcec7780f3d3027f76c80dbd73085fdee144d7
      https://github.com/llvm/llvm-project/commit/2adcec7780f3d3027f76c80dbd73085fdee144d7
  Author: Yingwei Zheng <dtcxzyw2333 at gmail.com>
  Date:   2025-01-05 (Sun, 05 Jan 2025)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
    M llvm/test/Transforms/InstCombine/overflow.ll

  Log Message:
  -----------
  [InstCombine] Simplify with.overflow intrinsics with assumption information (#84016)

This patch recognizes never-overflow assumptions generated by rustc to
improve the codegen.
Please refer to https://github.com/rust-lang/hashbrown/issues/509 for
more details.

Closes https://github.com/rust-lang/hashbrown/issues/509
Closes https://github.com/llvm/llvm-project/issues/80637



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