1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
; RUN: llc -mtriple=x86_64-pc-linux %s -o - -regalloc=fast | FileCheck %s
; We used to consider the early clobber in the second asm statement as
; defining %0 before it was read. This caused us to omit the
; movq -8(%rsp), %rdx
; CHECK: #APP
; CHECK-NEXT: #NO_APP
; CHECK-NEXT: movq %rcx, %rax
; CHECK-NEXT: movq %rax, -8(%rsp)
; CHECK-NEXT: movq -8(%rsp), %rdx
; CHECK-NEXT: #APP
; CHECK-NEXT: #NO_APP
; CHECK-NEXT: movq %rdx, %rax
; CHECK-NEXT: movq %rdx, -8(%rsp)
; CHECK-NEXT: ret
define i64 @foo() {
entry:
%0 = tail call i64 asm "", "={cx}"() nounwind
%1 = tail call i64 asm "", "=&r,0,r,~{rax}"(i64 %0, i64 %0) nounwind
ret i64 %1
}
|
