[all-commits] [llvm/llvm-project] da381c: [SLP] allow matching integer min/max intrinsics as...

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  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: da381cf7ce05bff833e0fe5401cbfe1bb5dede23
      https://github.com/llvm/llvm-project/commit/da381cf7ce05bff833e0fe5401cbfe1bb5dede23
  Author: Sanjay Patel <spatel at rotateright.com>
  Date:   2021-03-29 (Mon, 29 Mar 2021)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/Transforms/SLPVectorizer/X86/horizontal-minmax.ll
    M llvm/test/Transforms/SLPVectorizer/X86/horizontal-smax.ll
    M llvm/test/Transforms/SLPVectorizer/slp-umax-rdx-matcher-crash.ll

  Log Message:
  -----------
  [SLP] allow matching integer min/max intrinsics as reduction ops

This is a 2nd try of:
3c8473ba534
which was reverted at:
 a26312f9d4f
because of crashing.

This version includes extra code and tests to avoid the known
crashing examples as discussed in PR49730.

Original commit message:
As noted in D98152, we need to patch SLP to avoid regressions when
we start canonicalizing to integer min/max intrinsics.
Most of the real work to make this possible was in:
7202f47508

Differential Revision: https://reviews.llvm.org/D98981