[llvm-commits] [llvm] r155143 - /llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp

[Jim Grosbach]

Author: grosbach
Date: Thu Apr 19 12:52:34 2012
New Revision: 155143

URL: http://llvm.org/viewvc/llvm-project?rev=155143&view=rev
Log:
Use a SmallVector instead of std::vector for ResOperands.

There's almost always a small number of instruction operands, so
use a SmallVector and save on heap allocations.

Modified:
    llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp

Modified: llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp?rev=155143&r1=155142&r2=155143&view=diff
==============================================================================
--- llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp (original)
+++ llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp Thu Apr 19 12:52:34 2012
@@ -385,7 +385,7 @@
 
   /// ResOperands - This is the operand list that should be built for the result
   /// MCInst.
-  std::vector<ResOperand> ResOperands;
+  SmallVector<ResOperand, 8> ResOperands;
 
   /// AsmString - The assembly string for this instruction (with variants
   /// removed), e.g. "movsx $src, $dst".
@@ -399,7 +399,7 @@
   /// annotated with a class and where in the OperandList they were defined.
   /// This directly corresponds to the tokenized AsmString after the mnemonic is
   /// removed.
-  SmallVector<AsmOperand, 4> AsmOperands;
+  SmallVector<AsmOperand, 8> AsmOperands;
 
   /// Predicates - The required subtarget features to match this instruction.
   SmallVector<SubtargetFeatureInfo*, 4> RequiredFeatures;