50 lines
1.8 KiB
LLVM
50 lines
1.8 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -keep-loops=false -sink-common-insts=true -S | FileCheck %s
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; This would infinite-loop because we allowed code sinking to examine an infinite-loop block (%j).
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define void @PR49541(i32* %t1, i32 %a, i1 %bool) {
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; CHECK-LABEL: @PR49541(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[I:%.*]]
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; CHECK: j:
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; CHECK-NEXT: [[T3:%.*]] = phi i32 [ [[B:%.*]], [[J:%.*]] ], [ [[A:%.*]], [[COND_TRUE:%.*]] ], [ [[A]], [[COND_FALSE:%.*]] ]
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; CHECK-NEXT: [[T2:%.*]] = phi i32 [ [[T2]], [[J]] ], [ [[PRE2:%.*]], [[COND_TRUE]] ], [ 0, [[COND_FALSE]] ]
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; CHECK-NEXT: [[B]] = load i32, i32* [[T1:%.*]], align 4
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; CHECK-NEXT: br label [[J]]
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; CHECK: i:
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; CHECK-NEXT: [[G_1:%.*]] = phi i16 [ undef, [[ENTRY:%.*]] ], [ [[G_1]], [[COND_FALSE]] ]
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; CHECK-NEXT: br i1 [[BOOL:%.*]], label [[COND_FALSE]], label [[COND_TRUE]]
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; CHECK: cond.true:
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; CHECK-NEXT: [[TOBOOL9_NOT:%.*]] = icmp eq i16 [[G_1]], 0
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; CHECK-NEXT: [[PRE2]] = load i32, i32* [[T1]], align 4
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; CHECK-NEXT: br label [[J]]
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; CHECK: cond.false:
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; CHECK-NEXT: [[T5:%.*]] = load i32, i32* [[T1]], align 4
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; CHECK-NEXT: [[B2:%.*]] = icmp eq i32 [[T5]], 0
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; CHECK-NEXT: br i1 [[B2]], label [[J]], label [[I]]
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;
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entry:
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br label %i
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j:
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%t3 = phi i32 [ %b, %j ], [ %a, %cond.true ], [ %a, %cond.false ]
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%t2 = phi i32 [ %t2, %j ], [ %pre2, %cond.true ], [ 0, %cond.false ]
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%b = load i32, i32* %t1, align 4
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br label %j
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i:
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%g.1 = phi i16 [ undef, %entry ], [ %g.1, %cond.false ]
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br i1 %bool, label %cond.false, label %cond.true
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cond.true:
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%tobool9.not = icmp eq i16 %g.1, 0
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%pre2 = load i32, i32* %t1, align 4
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br label %j
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cond.false:
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%t5 = load i32, i32* %t1, align 4
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%b2 = icmp eq i32 %t5, 0
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br i1 %b2, label %j, label %i
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}
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