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