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|
# RUN: llc -march=x86-64 -run-pass none -o - %s | FileCheck %s
# This test ensures that the MIR parser parses basic block successors correctly.
--- |
define i32 @foo(i32 %a) {
entry:
%0 = icmp sle i32 %a, 10
br i1 %0, label %less, label %exit
less:
ret i32 0
exit:
ret i32 %a
}
define i32 @bar(i32 %a) {
entry:
%b = icmp sle i32 %a, 10
br i1 %b, label %0, label %1
; <label>:0
ret i32 0
; <label>:1
ret i32 %a
}
...
---
name: foo
body: |
; CHECK-LABEL: bb.0.entry:
; CHECK-LABEL: bb.1.less:
bb.0.entry:
successors: %bb.1.less, %bb.2.exit
liveins: $edi
CMP32ri8 $edi, 10, implicit-def $eflags
JCC_1 %bb.2.exit, 15, implicit killed $eflags
bb.1.less:
$eax = MOV32r0 implicit-def dead $eflags
RETQ killed $eax
bb.2.exit:
liveins: $edi
$eax = COPY killed $edi
RETQ killed $eax
...
---
name: bar
body: |
; CHECK-LABEL: name: bar
; Verify that we can have multiple lists of successors that will be merged
; into one.
; CHECK-LABEL: bb.0.entry:
; CHECK: successors: %bb.1(0x80000000), %bb.2(0x00000000)
bb.0.entry:
liveins: $edi
successors: %bb.1
successors: %bb.2
CMP32ri8 $edi, 10, implicit-def $eflags
JCC_1 %bb.2, 15, implicit killed $eflags
; Verify that we can have an empty list of successors.
; CHECK-LABEL: bb.1:
; CHECK-NEXT: $eax = MOV32r0 implicit-def dead $eflags
bb.1:
successors:
$eax = MOV32r0 implicit-def dead $eflags
RETQ killed $eax
bb.2:
liveins: $edi
$eax = COPY killed $edi
RETQ killed $eax
...
|
