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78bcdd73d3
This change fixes a bug in SelectionDAGBuilder::visitInsertValue and SelectionDAGBuilder::visitExtractValue where constant expressions (InsertValueConstantExpr and ExtractValueConstantExpr) would be treated as non-constant instructions (InsertValueInst and ExtractValueInst). This bug resulted in an incorrect memory access, which manifested as an assertion failure in SDValue::SDValue. Fixes PR#33094. Submitted on behalf of @Praetonus (Benoit Vey) Differential Revision: https://reviews.llvm.org/D34538 llvm-svn: 307502
19 lines
469 B
LLVM
19 lines
469 B
LLVM
; RUN: llc < %s
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; PR33094
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; Make sure that a constant extractvalue doesn't cause a crash in
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; SelectionDAGBuilder::visitExtractValue.
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%A = type {}
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%B = type {}
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%Tuple = type { i64 }
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@A_Inst = global %A zeroinitializer
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@B_Inst = global %B zeroinitializer
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define i64 @foo() {
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ret i64 extractvalue (%Tuple select (i1 icmp eq
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(%B* bitcast (%A* @A_Inst to %B*), %B* @B_Inst),
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%Tuple { i64 33 }, %Tuple { i64 42 }), 0)
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}
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