[all-commits] [llvm/llvm-project] 83272a: [InstCombine] Fold icmp of gep chain with base (#1...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 83272a48493948c5190be00e7e734a0335be86f8
      https://github.com/llvm/llvm-project/commit/83272a48493948c5190be00e7e734a0335be86f8
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2025-07-02 (Wed, 02 Jul 2025)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
    M llvm/test/Transforms/InstCombine/getelementptr.ll
    M llvm/test/Transforms/InstCombine/icmp-gep.ll
    M llvm/test/Transforms/InstCombine/pr39908.ll

  Log Message:
  -----------
  [InstCombine] Fold icmp of gep chain with base (#144065)

Fold icmp between a chain of geps and its base pointer. Previously only
a single gep was supported.
    
This will be extended to handle the case of two gep chains with a common
base in a followup.

This helps to avoid regressions after #137297.



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