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Reserve space for PHI nodes when we read them in. This provides a VERY
author
Chris Lattner
<sabre@nondot.org>
Thu, 9 Oct 2003 22:46:58 +0000
(22:46 +0000)
committer
Chris Lattner
<sabre@nondot.org>
Thu, 9 Oct 2003 22:46:58 +0000
(22:46 +0000)
tasty 15% speedup on the testcase from Bill.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8993
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/Bytecode/Reader/InstructionReader.cpp
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diff --git
a/lib/Bytecode/Reader/InstructionReader.cpp
b/lib/Bytecode/Reader/InstructionReader.cpp
index a763d66b227263219b4206a3bd1be3c9dc23cd8a..b415025a578b724ec9aaaeb9e855db62c4ff4384 100644
(file)
--- a/
lib/Bytecode/Reader/InstructionReader.cpp
+++ b/
lib/Bytecode/Reader/InstructionReader.cpp
@@
-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;