1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -S -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 2>&1 | FileCheck %s
4 declare i32 @blam(ptr, i32)
6 define i32 @wibble(ptr %arg, ptr %arg1) {
7 ; CHECK-LABEL: @wibble(
9 ; CHECK-NEXT: br label [[BB2:%.*]]
11 ; CHECK-NEXT: [[BORG:%.*]] = phi i32 [ 0, [[BB:%.*]] ], [ [[BORG]], [[BB2]] ]
12 ; CHECK-NEXT: [[BORG3:%.*]] = phi i32 [ 8, [[BB]] ], [ [[SPEC_SELECT:%.*]], [[BB2]] ]
13 ; CHECK-NEXT: [[BORG4:%.*]] = tail call i32 @blam(ptr [[ARG:%.*]], i32 [[BORG]])
14 ; CHECK-NEXT: [[BORG5:%.*]] = icmp eq i32 [[BORG4]], 0
15 ; CHECK-NEXT: [[SPEC_SELECT]] = select i1 [[BORG5]], i32 [[BORG3]], i32 [[BORG4]]
16 ; CHECK-NEXT: [[BORG11:%.*]] = icmp ult i32 [[BORG]], 2
17 ; CHECK-NEXT: br i1 [[BORG11]], label [[BB2]], label [[BB12:%.*]]
19 ; CHECK-NEXT: ret i32 1
24 bb2: ; preds = %bb8, %bb
25 %borg = phi i32 [ 0, %bb ], [ %borg9, %bb8 ]
26 %borg3 = phi i32 [ 8, %bb ], [ %borg10, %bb8 ]
27 %borg4 = tail call i32 @blam(ptr %arg, i32 %borg)
28 %borg5 = icmp eq i32 %borg4, 0
29 br i1 %borg5, label %bb8, label %bb6
32 %borg7 = load ptr, ptr %arg1, align 4
35 bb8: ; preds = %bb6, %bb2
36 %borg9 = phi i32 [ %borg, %bb6 ], [ %borg, %bb2 ]
37 %borg10 = phi i32 [ %borg4, %bb6 ], [ %borg3, %bb2 ]
38 %borg11 = icmp ult i32 %borg9, 2
39 br i1 %borg11, label %bb2, label %bb12