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
|
; RUN: opt < %s -S -simple-loop-unswitch -verify-loop-info -verify-dom-info | FileCheck %s
; RUN: opt < %s -S -simple-loop-unswitch -verify-loop-info -verify-dom-info -enable-mssa-loop-dependency=true -verify-memoryssa | FileCheck %s
; PR12343: -simple-loop-unswitch crash on indirect branch
; CHECK: %0 = icmp eq i64 undef, 0
; CHECK-NEXT: br i1 %0, label %"5", label %"4"
; CHECK: "5": ; preds = %entry
; CHECK-NEXT: br label %"16"
; CHECK: "16": ; preds = %"22", %"5"
; CHECK-NEXT: indirectbr i8* undef, [label %"22", label %"33"]
; CHECK: "22": ; preds = %"16"
; CHECK-NEXT: br i1 %0, label %"16", label %"26"
; CHECK: "26": ; preds = %"22"
; CHECK-NEXT: unreachable
define void @foo() {
entry:
%0 = icmp eq i64 undef, 0
br i1 %0, label %"5", label %"4"
"4": ; preds = %entry
unreachable
"5": ; preds = %entry
br label %"16"
"16": ; preds = %"22", %"5"
indirectbr i8* undef, [label %"22", label %"33"]
"22": ; preds = %"16"
br i1 %0, label %"16", label %"26"
"26": ; preds = %"22"
unreachable
"33": ; preds = %"16"
unreachable
}
|
