test/CodeGen/MIR/X86/inline-asm-registers.mir

# 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
...