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18 lines
426 B
LLVM
18 lines
426 B
LLVM
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; RUN: opt < %s -instcombine -S | 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 @test() nounwind {
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entry:
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; CHECK: test
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; CHECK: tail call i64 @llvm.x86.sse42.crc64.64
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; CHECK-NOT: and
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; CHECK: ret
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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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ret i64 %1
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}
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declare i64 @llvm.x86.sse42.crc64.64(i64, i64) nounwind readnone
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