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Minor speedup to do less linear time searches of information we already have.

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speeds up disassembly of kc++ by .6s


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10079 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2003-11-19 06:01:12 +00:00
parent cc33d70a92
commit 1c3673b238
3 changed files with 12 additions and 10 deletions
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5
lib/Bytecode/Reader/Reader.cpp
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@ -172,13 +172,14 @@ BasicBlock *BytecodeParser::getBasicBlock(unsigned ID) {
/// constant hasn't been parsed yet, a placeholder is defined and used. Later,
/// after the real value is parsed, the placeholder is eliminated.
///
Constant *BytecodeParser::getConstantValue(const Type *Ty, unsigned Slot) {
if (Value *V = getValue(Ty, Slot, false))
Constant *BytecodeParser::getConstantValue(unsigned TypeSlot, unsigned Slot) {
if (Value *V = getValue(TypeSlot, Slot, false))
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!");
const Type *Ty = getType(TypeSlot);
std::pair<const Type*, unsigned> Key(Ty, Slot);
GlobalRefsType::iterator I = GlobalRefs.lower_bound(Key);