[llvm-commits] CVS: llvm/lib/Bytecode/Reader/InstructionReader.cpp

[Chris Lattner]

Changes in directory llvm/lib/Bytecode/Reader:

InstructionReader.cpp updated: 1.58 -> 1.59

---
Log message:

Reserve space for PHI nodes when we read them in.  This provides a VERY
tasty 15% speedup on the testcase from Bill.


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Diffs of the changes:  (+1 -0)

Index: llvm/lib/Bytecode/Reader/InstructionReader.cpp
diff -u llvm/lib/Bytecode/Reader/InstructionReader.cpp:1.58 llvm/lib/Bytecode/Reader/InstructionReader.cpp:1.59
--- llvm/lib/Bytecode/Reader/InstructionReader.cpp:1.58	Thu Oct  9 17:39:30 2003
+++ llvm/lib/Bytecode/Reader/InstructionReader.cpp	Thu Oct  9 17:46:58 2003
@@ -125,6 +125,7 @@
       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;