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Change getConstantValue to throw an exception on error, not return null

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8988 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2003-10-09 20:41:16 +00:00
parent 1bc33a5227
commit c9456ca64c
2 changed files with 7 additions and 10 deletions
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5
lib/Bytecode/Reader/Reader.cpp
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@ -164,7 +164,10 @@ BasicBlock *BytecodeParser::getBasicBlock(unsigned ID) {
///
Constant *BytecodeParser::getConstantValue(const Type *Ty, unsigned Slot) {
if (Value *V = getValue(Ty, Slot, false))
return dyn_cast<Constant>(V); // If we already have the value parsed...
if (Constant *C = dyn_cast<Constant>(V))
return C; // If we already have the value parsed, just return it
else
throw std::string("Reference of a value is expected to be a constant!");
std::pair<const Type*, unsigned> Key(Ty, Slot);
GlobalRefsType::iterator I = GlobalRefs.lower_bound(Key);