[llvm] [X86][PartialReduction] Lower zext-byte add reductions to vpsadbw (PR #201076)

[Simon Pilgrim via llvm-commits]

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@@ -0,0 +1,478 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse2     | FileCheck %s --check-prefixes=SSE2
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2     | FileCheck %s --check-prefixes=AVX2
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512bw | FileCheck %s --check-prefixes=AVX512BW
+
+; Positive CodeGen tests for X86PartialReduction::tryByteSumReplacement.
+
+ at a = dso_local global [1024 x i8] zeroinitializer, align 16
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RKSimon wrote:

strip dso_local

https://github.com/llvm/llvm-project/pull/201076