48 lines
1.2 KiB
LLVM
48 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -ipsccp -S | FileCheck %s
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; This test case used to end up like this:
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;
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; While deleting: label %lor.rhs
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; Use still stuck around after Def is destroyed: br i1 undef, label %lor.rhs, label %land.end
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; opt: ../lib/IR/Value.cpp: llvm::Value::~Value(): Assertion `use_empty() && "Uses remain when a value is destroyed!"' failed.
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;
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; due to ConstantFoldTerminator rewriting the switch into
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;
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; br i1 undef, label %lor.rhs, label %land.end
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;
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; while SCCP implementation relied on the terminator to always be folded into
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; an unconditional branch when ConstantFoldTerminator returned true.
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define void @f4() {
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; CHECK-LABEL: define void @f4(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CALL:%.*]] = call i16 @f3(i16 undef)
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; CHECK-NEXT: ret void
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;
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entry:
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%call = call i16 @f3(i16 undef)
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ret void
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}
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define internal i16 @f3(i16 %p1) {
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; CHECK-LABEL: define internal i16 @f3(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LAND_END:%.*]]
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; CHECK: land.end:
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; CHECK-NEXT: ret i16 undef
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;
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entry:
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switch i16 %p1, label %land.end [
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i16 0, label %land.end
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i16 1, label %lor.rhs
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]
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lor.rhs:
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br label %land.end
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land.end:
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ret i16 0
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}
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