[all-commits] [llvm/llvm-project] 137aa5: [GlobalISel] Add computeNumSignBits for G_BUILD_VE...

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 137aa573ca1862303da21c10528b682b280e75e2
      https://github.com/llvm/llvm-project/commit/137aa573ca1862303da21c10528b682b280e75e2
  Author: David Green <david.green at arm.com>
  Date:   2025-05-13 (Tue, 13 May 2025)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/GISelValueTracking.cpp
    M llvm/test/CodeGen/AArch64/aarch64-dup-ext.ll
    M llvm/unittests/CodeGen/GlobalISel/KnownBitsVectorTest.cpp

  Log Message:
  -----------
  [GlobalISel] Add computeNumSignBits for G_BUILD_VECTOR. (#139506)

The code is similar to SelectionDAG::ComputeNumSignBits, but does not
deal with truncating buildvectors.



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