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15 lines
461 B
LLVM
15 lines
461 B
LLVM
; RUN: llc < %s -mtriple=x86_64-apple-darwin | grep xor | count 3
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@val = internal global i64 0
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@"\01LC" = internal constant [7 x i8] c"0x%lx\0A\00"
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define i32 @main() nounwind {
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entry:
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%t0 = cmpxchg i64* @val, i64 0, i64 1 monotonic monotonic
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%0 = extractvalue { i64, i1 } %t0, 0
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%1 = tail call i32 (i8*, ...) @printf(i8* getelementptr ([7 x i8], [7 x i8]* @"\01LC", i32 0, i64 0), i64 %0) nounwind
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ret i32 0
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}
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declare i32 @printf(i8*, ...) nounwind
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