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fix PR6577, a bug in sdbuilder lowering select instructions

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whose true value was not Val#0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98336 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-03-12 07:15:36 +00:00
parent 202c6a7e76
commit b3e87b2262
2 changed files with 16 additions and 1 deletions
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3
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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@ -2185,7 +2185,8 @@ void SelectionDAGBuilder::visitSelect(User &I) {
for (unsigned i = 0; i != NumValues; ++i)
Values[i] = DAG.getNode(ISD::SELECT, getCurDebugLoc(),
TrueVal.getNode()->getValueType(i), Cond,
TrueVal.getNode()->getValueType(TrueVal.getResNo()+i),
Cond,
SDValue(TrueVal.getNode(),
TrueVal.getResNo() + i),
SDValue(FalseVal.getNode(),

14
test/CodeGen/X86/crash.ll
View File

@ -33,3 +33,17 @@ if.then: ; preds = %land.end
if.end: ; preds = %land.end
ret void
}
; PR6577
%pair = type { i64, double }
define void @on4() {
dependentGraph243.exit:
%subject19 = load %pair* undef ; <%1> [#uses=1]
%0 = extractvalue %pair %subject19, 1 ; <double> [#uses=2]
%1 = select i1 undef, double %0, double undef ; <double> [#uses=1]
%2 = select i1 undef, double %1, double %0 ; <double> [#uses=1]
%3 = insertvalue %pair undef, double %2, 1 ; <%1> [#uses=1]
store %pair %3, %pair* undef
ret void
}