1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -loop-sink -break-crit-edges -branch-prob -S | FileCheck %s
; RUN: opt < %s -loop-sink -break-crit-edges -lazy-block-freq -S | FileCheck %s
; RUN: opt < %s -loop-sink -break-crit-edges -lazy-branch-prob -S | FileCheck %s
; BreakCriticalEdges tries to update LI and DT if they are present. However,
; updating LI actually needs a DT, so we now require DT in
; BranchProbabilityInfo/LazyBlockFrequencyInfo/LazyBranchProbabilityInfo so it
; is indeed available when LI is.
target triple = "x86_64-unknown-linux-gnu"
define void @f1() {
; CHECK-LABEL: @f1(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_COND:%.*]]
; CHECK: for.cond:
; CHECK-NEXT: br i1 false, label [[FOR_BODY:%.*]], label [[FOR_COND_FOR_END_CRIT_EDGE:%.*]]
; CHECK: for.cond.for.end_crit_edge:
; CHECK-NEXT: br label [[FOR_END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: br i1 true, label [[FOR_ENDSPLIT:%.*]], label [[FOR_INC:%.*]]
; CHECK: for.inc:
; CHECK-NEXT: br label [[FOR_COND]]
; CHECK: for.endsplit:
; CHECK-NEXT: br label [[FOR_END]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.cond
for.cond: ; preds = %for.inc, %entry
br i1 undef, label %for.body, label %for.end
for.body: ; preds = %for.cond
br i1 undef, label %for.end, label %for.inc
for.inc: ; preds = %for.body
br label %for.cond
for.end: ; preds = %for.body, %for.cond
ret void
}
|
