62 lines
1.5 KiB
YAML
62 lines
1.5 KiB
YAML
# RUN: llc -mtriple=x86_64-- -o - %s -run-pass=none -verify-machineinstrs -simplify-mir | FileCheck %s
|
|
---
|
|
# We shouldn't need any explicit successor lists in these examples
|
|
# CHECK-LABEL: name: func0
|
|
# CHECK: bb.0:
|
|
# CHECK-NOT: successors
|
|
# CHECK: JCC_1 %bb.1, 4, implicit undef $eflags
|
|
# CHECK: JMP_1 %bb.3
|
|
# CHECK: bb.1:
|
|
# CHECK-NOT: successors
|
|
# CHECK: bb.2:
|
|
# CHECK-NOT: successors
|
|
# CHECK: JCC_1 %bb.1, 4, implicit undef $eflags
|
|
# CHECK: bb.3:
|
|
# CHECK: RETQ undef $eax
|
|
name: func0
|
|
body: |
|
|
bb.0:
|
|
JCC_1 %bb.1, 4, implicit undef $eflags
|
|
JMP_1 %bb.3
|
|
|
|
bb.1:
|
|
|
|
bb.2:
|
|
JCC_1 %bb.1, 4, implicit undef $eflags
|
|
|
|
bb.3:
|
|
JCC_1 %bb.4, 4, implicit undef $eflags ; condjump+fallthrough to same block
|
|
|
|
bb.4:
|
|
RETQ undef $eax
|
|
...
|
|
---
|
|
# Some cases that need explicit successors:
|
|
# CHECK-LABEL: name: func1
|
|
name: func1
|
|
body: |
|
|
bb.0:
|
|
; CHECK: bb.0:
|
|
; CHECK: successors: %bb.3, %bb.1
|
|
successors: %bb.3, %bb.1 ; different order than operands
|
|
JCC_1 %bb.1, 4, implicit undef $eflags
|
|
JMP_1 %bb.3
|
|
|
|
bb.1:
|
|
; CHECK: bb.1:
|
|
; CHECK: successors: %bb.2, %bb.1
|
|
successors: %bb.2, %bb.1 ; different order (fallthrough variant)
|
|
JCC_1 %bb.1, 4, implicit undef $eflags
|
|
|
|
bb.2:
|
|
; CHECK: bb.2:
|
|
; CHECK: successors: %bb.1(0x60000000), %bb.3(0x20000000)
|
|
successors: %bb.1(3), %bb.3(1) ; branch probabilities not normalized
|
|
JCC_1 %bb.1, 4, implicit undef $eflags
|
|
|
|
bb.3:
|
|
; CHECK: bb.3:
|
|
; CHECK: RETQ undef $eax
|
|
RETQ undef $eax
|
|
...
|