forked from OSchip/llvm-project
53 lines
1.2 KiB
YAML
53 lines
1.2 KiB
YAML
# RUN: llc -mtriple=arm-apple-ios -run-pass=if-converter %s -o - | FileCheck %s
|
|
--- |
|
|
declare void @__stack_chk_fail()
|
|
declare void @bar()
|
|
|
|
define void @foo() {
|
|
ret void
|
|
}
|
|
...
|
|
---
|
|
name: foo
|
|
body: |
|
|
|
|
bb.0:
|
|
Bcc %bb.1, 1, $cpsr
|
|
B %bb.2
|
|
|
|
bb.1:
|
|
Bcc %bb.3, 0, $cpsr
|
|
|
|
bb.2:
|
|
successors:
|
|
tBL 14, $cpsr, @__stack_chk_fail
|
|
|
|
bb.3:
|
|
successors:
|
|
$sp = tADDspi $sp, 2, 14, _
|
|
$sp = tADDspi $sp, 2, 14, _
|
|
tTAILJMPdND @bar, 14, $cpsr
|
|
...
|
|
|
|
# bb.2 has no successors, presumably because __stack_chk_fail doesn't return,
|
|
# so there should be no edge from bb.2 to bb.3.
|
|
# Nevertheless, IfConversion treats bb.1, bb.2, bb.3 as a triangle and
|
|
# inserts a predicated copy of bb.2 in bb.1.
|
|
|
|
# This caused r302876 to die with a failed assertion.
|
|
|
|
# CHECK: bb.0:
|
|
# CHECK: successors: %bb.2(0x40000000), %bb.1(0x40000000)
|
|
# CHECK: Bcc %bb.2, 1, $cpsr
|
|
|
|
# CHECK: bb.1:
|
|
# CHECK-NOT: successors: %bb
|
|
# CHECK: tBL 14, $cpsr, @__stack_chk_fail
|
|
|
|
# CHECK: bb.2:
|
|
# CHECK-NOT: successors: %bb
|
|
# CHECK: tBL 1, $cpsr, @__stack_chk_fail
|
|
# CHECK: $sp = tADDspi $sp, 2, 14, $noreg
|
|
# CHECK: $sp = tADDspi $sp, 2, 14, $noreg
|
|
# CHECK: tTAILJMPdND @bar, 14, $cpsr
|