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7230fee696
Take this opportunity to generalize the indirectbr bailout logic for loop transformations. CFG transformations will never get indirectbr right, and there's no point trying. llvm-svn: 154386
42 lines
1.3 KiB
LLVM
42 lines
1.3 KiB
LLVM
; RUN: opt < %s -S -loop-unswitch -verify-loop-info -verify-dom-info | FileCheck %s
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; PR12343: -loop-unswitch crash on indirect branch
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; CHECK: %0 = icmp eq i64 undef, 0
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; CHECK-NEXT: br i1 %0, label %"5", label %"4"
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; CHECK: "5": ; preds = %entry
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; CHECK-NEXT: br label %"16"
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; CHECK: "16": ; preds = %"22", %"5"
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; CHECK-NEXT: indirectbr i8* undef, [label %"22", label %"33"]
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; CHECK: "22": ; preds = %"16"
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; CHECK-NEXT: br i1 %0, label %"16", label %"26"
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; CHECK: "26": ; preds = %"22"
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; CHECK-NEXT: unreachable
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define void @foo() {
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entry:
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%0 = icmp eq i64 undef, 0
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br i1 %0, label %"5", label %"4"
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"4": ; preds = %entry
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unreachable
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"5": ; preds = %entry
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br label %"16"
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"16": ; preds = %"22", %"5"
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indirectbr i8* undef, [label %"22", label %"33"]
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"22": ; preds = %"16"
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br i1 %0, label %"16", label %"26"
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"26": ; preds = %"22"
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unreachable
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"33": ; preds = %"16"
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unreachable
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}
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