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Reserve space for PHI nodes when we read them in. This provides a VERY

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tasty 15% speedup on the testcase from Bill.

llvm-svn: 8993
This commit is contained in:
Chris Lattner 2003-10-09 22:46:58 +00:00
parent b6367d9414
commit b8883ea999
1 changed files with 1 additions and 0 deletions
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lib/Bytecode/Reader/InstructionReader.cpp
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@ -125,6 +125,7 @@ Instruction *BytecodeParser::ParseInstruction(const unsigned char *&Buf,
throw std::string("Invalid phi node encountered!\n");
PHINode *PN = new PHINode(InstTy);
PN->op_reserve(Args.size());
for (unsigned i = 0, e = Args.size(); i != e; i += 2)
PN->addIncoming(getValue(RI.Type, Args[i]), getBasicBlock(Args[i+1]));
return PN;