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