[llvm] [VectorCombine] Fold zero tests of or/umax reductions (PR #205622)

[via llvm-commits]

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@@ -0,0 +1,67 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
+; RUN: opt -mtriple=x86_64-- -mcpu=x86-64 -passes=vector-combine -S %s | FileCheck %s
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ParkHanbum wrote:

I checked all four x86-64 micro-architecture levels. x86-64, x86-64-v2, and x86-64-v3 produced the same output, but x86-64-v4 differed for one test. Could you please take a look?

https://github.com/llvm/llvm-project/pull/205622