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Fix http://llvm.org/PR6028, an assertion failure when an UndefValue of

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integer type is used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93509 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jay Foad 2010-01-15 08:32:58 +00:00
parent bfdcf3bd49
commit 5b3701256c
1 changed files with 16 additions and 2 deletions
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18
lib/ExecutionEngine/ExecutionEngine.cpp
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@ -491,8 +491,22 @@ void *ExecutionEngine::getPointerToGlobal(const GlobalValue *GV) {
/// @brief Get a GenericValue for a Constant*
GenericValue ExecutionEngine::getConstantValue(const Constant *C) {
// If its undefined, return the garbage.
if (isa<UndefValue>(C))
return GenericValue();
if (isa<UndefValue>(C)) {
GenericValue Result;
switch (C->getType()->getTypeID()) {
case Type::IntegerTyID:
case Type::X86_FP80TyID:
case Type::FP128TyID:
case Type::PPC_FP128TyID:
// Although the value is undefined, we still have to construct an APInt
// with the correct bit width.
Result.IntVal = APInt(C->getType()->getPrimitiveSizeInBits(), 0);
break;
default:
break;
}
return Result;
}
// If the value is a ConstantExpr
if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {