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71 lines
2.6 KiB
LLVM
71 lines
2.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -loop-fusion < %s | FileCheck %s
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; RUN: opt -S -loop-fusion -pass-remarks-output=%t < %s
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; RUN: FileCheck --input-file=%t %s --check-prefix REMARKS
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; REQUIRES: asserts
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define dso_local void @pr48060(i1 %cond) {
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; CHECK-LABEL: @pr48060(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_1_PH:%.*]]
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; CHECK: for.1.ph:
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; CHECK-NEXT: br label [[FOR_1:%.*]]
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; CHECK: for.1:
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; CHECK-NEXT: [[I:%.*]] = phi i32 [ 0, [[FOR_1_PH]] ], [ [[I_NEXT:%.*]], [[FOR_1]] ]
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; CHECK-NEXT: [[I_NEXT]] = add i32 [[I]], 1
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; CHECK-NEXT: [[COND_1:%.*]] = icmp eq i32 [[I_NEXT]], 10
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; CHECK-NEXT: br i1 [[COND_1]], label [[FOR_1_EXIT:%.*]], label [[FOR_1]]
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; CHECK: for.1.exit:
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[END:%.*]], label [[FOR_2_PH:%.*]]
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; CHECK: for.2.ph:
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; CHECK-NEXT: br label [[FOR_2:%.*]]
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; CHECK: for.2:
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; CHECK-NEXT: [[J:%.*]] = phi i32 [ 0, [[FOR_2_PH]] ], [ [[J_NEXT:%.*]], [[FOR_2]] ]
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; CHECK-NEXT: [[J_NEXT]] = add i32 [[J]], 1
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; CHECK-NEXT: [[COND_2:%.*]] = icmp eq i32 [[J_NEXT]], 10
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; CHECK-NEXT: br i1 [[COND_2]], label [[FOR_2_EXIT:%.*]], label [[FOR_2]]
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; CHECK: for.2.exit:
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; CHECK-NEXT: br label [[END]]
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; CHECK: end:
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; CHECK-NEXT: ret void
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;
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; REMARKS: --- !Missed
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; REMARKS-NEXT: Pass: loop-fusion
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; REMARKS-NEXT: Name: OnlySecondCandidateIsGuarded
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; REMARKS-NEXT: Function: pr48060
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; REMARKS-NEXT: Args:
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; REMARKS: - Cand1: for.1.ph
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; REMARKS: - Cand2: for.2.ph
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; REMARKS: - String: The second candidate is guarded while the first one is not
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entry:
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br label %for.1.ph
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for.1.ph: ; preds = %entry
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br label %for.1
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for.1: ; preds = %for.1, %for.1.ph
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%i = phi i32 [ 0, %for.1.ph ], [ %i.next, %for.1 ]
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%i.next = add i32 %i, 1
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%cond.1 = icmp eq i32 %i.next, 10
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br i1 %cond.1, label %for.1.exit, label %for.1
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for.1.exit: ; preds = %for.1
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br i1 %cond, label %end, label %for.2.ph
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for.2.ph: ; preds = %for.1.exit
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br label %for.2
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for.2: ; preds = %for.2, %for.2.ph
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%j = phi i32 [ 0, %for.2.ph ], [ %j.next, %for.2 ]
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%j.next = add i32 %j, 1
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%cond.2 = icmp eq i32 %j.next, 10
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br i1 %cond.2, label %for.2.exit, label %for.2
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for.2.exit: ; preds = %for.2
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br label %end
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end: ; preds = %for.1.exit, %for.2.exit
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ret void
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}
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