[all-commits] [llvm/llvm-project] b60f99: [X86][SSE] Fold 128-bit PACK(EXTEND(X), EXTEND(Y)) ...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: b60f998859458a13774fff296b58f587da8e56dd
      https://github.com/llvm/llvm-project/commit/b60f998859458a13774fff296b58f587da8e56dd
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2020-08-05 (Wed, 05 Aug 2020)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/bitcast-setcc-128.ll
    M llvm/test/CodeGen/X86/vector-reduce-and-bool.ll
    M llvm/test/CodeGen/X86/vector-reduce-or-bool.ll
    M llvm/test/CodeGen/X86/vector-reduce-xor-bool.ll

  Log Message:
  -----------
  [X86][SSE] Fold 128-bit PACK(EXTEND(X),EXTEND(Y)) -> CONCAT(X,Y) subvectors

This is seen in the sub-128-bit vector trunc(ext()) of comparison results

Fixes pr46585.ll regression in D66004