Eliminate some deep std::vector copies. NFC.

[oota-llvm.git] / lib / CodeGen / SelectionDAG / TargetLowering.cpp

diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index ee9c0f641720727ac8c4af225961dfeb6e6d20e6..db03e2ad8fdcbc5c169130a7e782fc515a3395d3 100644 (file)
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -2241,14 +2241,11 @@ TargetLowering::AsmOperandInfoVector TargetLowering::ParseConstraints(
 
   // Do a prepass over the constraints, canonicalizing them, and building up the
   // ConstraintOperands list.
-  InlineAsm::ConstraintInfoVector
-    ConstraintInfos = IA->ParseConstraints();
-
   unsigned ArgNo = 0;   // ArgNo - The argument of the CallInst.
   unsigned ResNo = 0;   // ResNo - The result number of the next output.
 
-  for (unsigned i = 0, e = ConstraintInfos.size(); i != e; ++i) {
-    ConstraintOperands.push_back(AsmOperandInfo(ConstraintInfos[i]));
+  for (InlineAsm::ConstraintInfo &CI : IA->ParseConstraints()) {
+    ConstraintOperands.emplace_back(std::move(CI));
     AsmOperandInfo &OpInfo = ConstraintOperands.back();
 
     // Update multiple alternative constraint count.
@@ -2327,7 +2324,7 @@ TargetLowering::AsmOperandInfoVector TargetLowering::ParseConstraints(
   }
 
   // If we have multiple alternative constraints, select the best alternative.
-  if (ConstraintInfos.size()) {
+  if (ConstraintOperands.size()) {
     if (maCount) {
       unsigned bestMAIndex = 0;
       int bestWeight = -1;