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0efaa5e6a1
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131664 91177308-0d34-0410-b5e6-96231b3b80d8
20 lines
508 B
LLVM
20 lines
508 B
LLVM
; RUN: llc < %s -march=x86-64 -mattr=sse42 | FileCheck %s
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; crc32 with 64-bit destination zeros high 32-bit.
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; rdar://9467055
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define i64 @t() nounwind {
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entry:
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; CHECK: t:
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; CHECK: crc32q
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; CHECK-NOT: mov
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; CHECK-NEXT: crc32q
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%0 = tail call i64 @llvm.x86.sse42.crc64.64(i64 0, i64 4) nounwind
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%1 = and i64 %0, 4294967295
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%2 = tail call i64 @llvm.x86.sse42.crc64.64(i64 %1, i64 4) nounwind
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%3 = and i64 %2, 4294967295
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ret i64 %3
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}
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declare i64 @llvm.x86.sse42.crc64.64(i64, i64) nounwind readnone
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