undef-register-flag.mir
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# RUN: llc -march=x86-64 -run-pass none -o - %s | FileCheck %s
# This test ensures that the MIR parser parses the 'undef' register flags
# correctly.
--- |
define i32 @compute(i32 %a) #0 {
body:
%c = mul i32 %a, 11
ret i32 %c
}
define i32 @foo(i32 %a) #0 {
entry:
%b = call i32 @compute(i32 %a)
ret i32 %b
}
attributes #0 = { "frame-pointer"="none" }
...
---
name: compute
body: |
bb.0.body:
$eax = IMUL32rri8 $edi, 11, implicit-def $eflags
RETQ $eax
...
---
name: foo
body: |
bb.0.entry:
; CHECK: PUSH64r undef $rax
PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
CALL64pcrel32 @compute, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, implicit-def $eax
$rdx = POP64r implicit-def $rsp, implicit $rsp
RETQ $eax
...