[all-commits] [llvm/llvm-project] 3589ca: [ValueTracking] Handle `icmp pred (trunc X), C` in...

[Yingwei Zheng via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3589cacfa8da89b9b5051e4dba659caa575e6b3f
      https://github.com/llvm/llvm-project/commit/3589cacfa8da89b9b5051e4dba659caa575e6b3f
  Author: Yingwei Zheng <dtcxzyw2333 at gmail.com>
  Date:   2024-03-07 (Thu, 07 Mar 2024)

  Changed paths:
    M llvm/lib/Analysis/ValueTracking.cpp
    M llvm/test/Transforms/InstCombine/known-bits.ll

  Log Message:
  -----------
  [ValueTracking] Handle `icmp pred (trunc X), C` in `computeKnownBitsFromCmp` (#82803)

This patch handles the pattern `icmp pred (trunc X), C` in
`computeKnownBitsFromCmp` to infer low bits of `X` from dominating
conditions.



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