[all-commits] [llvm/llvm-project] fc12fc: [SystemZ] Fix code in widening vector multiplicati...

[sujianIBM via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fc12fc635b96e9fa521a33eb31336c539eed1918
      https://github.com/llvm/llvm-project/commit/fc12fc635b96e9fa521a33eb31336c539eed1918
  Author: sujianIBM <98488060+sujianIBM at users.noreply.github.com>
  Date:   2025-07-31 (Thu, 31 Jul 2025)

  Changed paths:
    M llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
    M llvm/test/CodeGen/SystemZ/vec-mul-07.ll

  Log Message:
  -----------
  [SystemZ] Fix code in widening vector multiplication (#150836)

Commit cdc7864 has an error which would wrongly fold widening
multiplications into an even/odd widening operation.
This PR fixes it and adds tests to check scenarios which should not be
folded into an even/odd widening operation are actually not.



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