1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -debug-pass=Details -enable-new-pm=0 2>&1 | FileCheck %s
4 ;; Check the report from the pass manager, telling us whether simplifycfg
5 ;; reported the "changed" status correctly:
6 ; CHECK: Made Modification 'Simplify the CFG' on Function 'wibble'...
8 declare i32 @blam(i8*, i32)
10 define i32 @wibble(i8* %arg, i8** %arg1) {
11 ; CHECK-LABEL: @wibble(
13 ; CHECK-NEXT: br label [[BB2:%.*]]
15 ; CHECK-NEXT: [[BORG:%.*]] = phi i32 [ 0, [[BB:%.*]] ], [ [[BORG]], [[BB8:%.*]] ]
16 ; CHECK-NEXT: [[BORG3:%.*]] = phi i32 [ 8, [[BB]] ], [ [[BORG10:%.*]], [[BB8]] ]
17 ; CHECK-NEXT: [[BORG4:%.*]] = tail call i32 @blam(i8* [[ARG:%.*]], i32 [[BORG]])
18 ; CHECK-NEXT: [[BORG5:%.*]] = icmp eq i32 [[BORG4]], 0
19 ; CHECK-NEXT: br i1 [[BORG5]], label [[BB8]], label [[BB6:%.*]]
21 ; CHECK-NEXT: [[BORG7:%.*]] = load i8*, i8** [[ARG1:%.*]], align 4
22 ; CHECK-NEXT: br label [[BB8]]
24 ; CHECK-NEXT: [[BORG10]] = phi i32 [ [[BORG4]], [[BB6]] ], [ [[BORG3]], [[BB2]] ]
25 ; CHECK-NEXT: [[BORG11:%.*]] = icmp ult i32 [[BORG]], 2
26 ; CHECK-NEXT: br i1 [[BORG11]], label [[BB2]], label [[BB12:%.*]]
28 ; CHECK-NEXT: ret i32 1
33 bb2: ; preds = %bb8, %bb
34 %borg = phi i32 [ 0, %bb ], [ %borg9, %bb8 ]
35 %borg3 = phi i32 [ 8, %bb ], [ %borg10, %bb8 ]
36 %borg4 = tail call i32 @blam(i8* %arg, i32 %borg)
37 %borg5 = icmp eq i32 %borg4, 0
38 br i1 %borg5, label %bb8, label %bb6
41 %borg7 = load i8*, i8** %arg1, align 4
44 bb8: ; preds = %bb6, %bb2
45 %borg9 = phi i32 [ %borg, %bb6 ], [ %borg, %bb2 ]
46 %borg10 = phi i32 [ %borg4, %bb6 ], [ %borg3, %bb2 ]
47 %borg11 = icmp ult i32 %borg9, 2
48 br i1 %borg11, label %bb2, label %bb12