Changes in directory llvm/lib/CodeGen/SelectionDAG:
SelectionDAGISel.cpp updated: 1.374 -> 1.375
---
Log message:
optimize duplicate ValueMap lookups
---
Diffs of the changes: (+6 -9)
SelectionDAGISel.cpp | 15 ++++++---------
1 files changed, 6 insertions(+), 9 deletions(-)
Index: llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:1.374
llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:1.375
--- llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:1.374 Sat Feb 24
03:45:44 2007
+++ llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp Sun Feb 25 12:40:32 2007
@@ -661,17 +661,14 @@
return DAG.getFrameIndex(SI->second, TLI.getPointerTy());
}
- DenseMap<const Value*, unsigned>::iterator VMI =
- FuncInfo.ValueMap.find(V);
- assert(VMI != FuncInfo.ValueMap.end() && "Value not in map!");
-
- unsigned InReg = VMI->second;
+ unsigned InReg = FuncInfo.ValueMap[V];
+ assert(InReg && "Value not in map!");
// If this type is not legal, make it so now.
if (VT != MVT::Vector) {
if (TLI.getTypeAction(VT) == TargetLowering::Expand) {
// Source must be expanded. This input value is actually coming from the
- // register pair VMI->second and VMI->second+1.
+ // register pair InReg and InReg+1.
MVT::ValueType DestVT = TLI.getTypeToExpandTo(VT);
unsigned NumVals = TLI.getNumElements(VT);
N = DAG.getCopyFromReg(DAG.getEntryNode(), InReg, DestVT);
@@ -4189,9 +4186,9 @@
// If this argument is live outside of the entry block, insert a copy
from
// whereever we got it to the vreg that other BB's will reference it as.
- if (FuncInfo.ValueMap.count(AI)) {
- SDOperand Copy =
- SDL.CopyValueToVirtualRegister(AI, FuncInfo.ValueMap[AI]);
+ DenseMap<const Value*, unsigned>::iterator
VMI=FuncInfo.ValueMap.find(AI);
+ if (VMI != FuncInfo.ValueMap.end()) {
+ SDOperand Copy = SDL.CopyValueToVirtualRegister(AI, VMI->second);
UnorderedChains.push_back(Copy);
}
}
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