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Fix a crasher trying to fold each element in a comparison between two vectors

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if one of the vectors didn't have elements (such as undef). Fixes PR 6096.

Fix an issue in the constant folder where fcmp (<2 x %ty>, <2 x %ty>) would
have <2 x i1> type if constant folding was successful and i1 type if it wasn't.
This exposed a related issue in the bitcode reader.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94069 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky
2010-01-21 07:03:21 +00:00
parent 1548b863ce
commit 401f3258f6
4 changed files with 25 additions and 11 deletions
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2
lib/Bitcode/Reader/BitcodeReader.cpp
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@@ -1167,7 +1167,7 @@ bool BitcodeReader::ParseConstants() {
Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy);
Constant *Op1 = ValueList.getConstantFwdRef(Record[2], OpTy);
if (OpTy->isFloatingPoint())
if (OpTy->isFPOrFPVector())
V = ConstantExpr::getFCmp(Record[3], Op0, Op1);
else
V = ConstantExpr::getICmp(Record[3], Op0, Op1);