inline-asm-registers.mir
1.61 KB
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# RUN: llc -march=x86-64 -run-pass none -o - %s | FileCheck %s
--- |
define i64 @test(i64 %x, i64 %y) #0 {
entry:
%x0 = call { i64, i64 } asm "foo", "=r,=r,1,0,~{dirflag},~{fpsr},~{flags}"(i64 %x, i64 %y) #0
%x1 = extractvalue { i64, i64 } %x0, 0
ret i64 %x1
}
define i64 @test2(i64 %x, i64 %y) #0 {
entry:
%x0 = call { i64, i64 } asm "foo", "=r,=r,1,0,~{dirflag},~{fpsr},~{flags}"(i64 %x, i64 %y) #0
%x1 = extractvalue { i64, i64 } %x0, 0
ret i64 %x1
}
attributes #0 = { nounwind }
...
---
name: test
tracksRegLiveness: true
liveins:
- { reg: '$rdi' }
- { reg: '$rsi' }
body: |
bb.0.entry:
liveins: $rdi, $rsi
; CHECK-LABEL: name: test
; CHECK: INLINEASM &foo, 0, 2818058, def $rsi, 2818058, def dead $rdi,
INLINEASM &foo, 0, 2818058, def $rsi, 2818058, def dead $rdi, 2147549193, killed $rdi, 2147483657, killed $rsi, 12, implicit-def dead early-clobber $eflags
$rax = MOV64rr killed $rsi
RETQ killed $rax
...
---
name: test2
tracksRegLiveness: true
liveins:
- { reg: '$rdi' }
- { reg: '$rsi' }
body: |
bb.0.entry:
liveins: $rdi, $rsi
; Verify that the register ties are preserved.
; CHECK-LABEL: name: test2
; CHECK: INLINEASM &foo, 0, 2818058, def $rsi, 2818058, def dead $rdi, 2147549193, killed $rdi(tied-def 5), 2147483657, killed $rsi(tied-def 3), 12, implicit-def dead early-clobber $eflags
INLINEASM &foo, 0, 2818058, def $rsi, 2818058, def dead $rdi, 2147549193, killed $rdi(tied-def 5), 2147483657, killed $rsi(tied-def 3), 12, implicit-def dead early-clobber $eflags
$rax = MOV64rr killed $rsi
RETQ killed $rax
...