24 lines
671 B
LLVM
24 lines
671 B
LLVM
; RUN: llc -mtriple=x86_64-pc-linux %s -o - -regalloc=fast -optimize-regalloc=0 | FileCheck %s
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; We used to consider the early clobber in the second asm statement as
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; defining %0 before it was read. This caused us to omit the
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; movq -8(%rsp), %rdx
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; CHECK: #APP
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; CHECK-NEXT: #NO_APP
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; CHECK-NEXT: movq %rcx, %rax
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; CHECK-NEXT: movq %rax, -8(%rsp)
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; CHECK-NEXT: movq -8(%rsp), %rdx
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; CHECK-NEXT: #APP
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; CHECK-NEXT: #NO_APP
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; CHECK-NEXT: movq %rdx, %rax
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; CHECK-NEXT: movq %rdx, -8(%rsp)
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; CHECK-NEXT: ret
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define i64 @foo() {
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entry:
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%0 = tail call i64 asm "", "={cx}"() nounwind
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%1 = tail call i64 asm "", "=&r,0,r,~{rax}"(i64 %0, i64 %0) nounwind
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ret i64 %1
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}
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