Replace some unnecessary vector copies with references.

llvm-svn: 190770

3 files changed, 5 insertions, 5 deletions

diff --git a/llvm/lib/Target/ARM/ARMConstantPoolValue.cpp b/llvm/lib/Target/ARM/ARMConstantPoolValue.cpp
index 4e703ec3c1a..8e17f47e7b5 100644
--- a/llvm/lib/Target/ARM/ARMConstantPoolValue.cpp
+++ b/llvm/lib/Target/ARM/ARMConstantPoolValue.cpp
@@ -164,7 +164,7 @@ const BlockAddress *ARMConstantPoolConstant::getBlockAddress() const {
 int ARMConstantPoolConstant::getExistingMachineCPValue(MachineConstantPool *CP,
                                                        unsigned Alignment) {
   unsigned AlignMask = Alignment - 1;
-  const std::vector<MachineConstantPoolEntry> Constants = CP->getConstants();
+  const std::vector<MachineConstantPoolEntry> &Constants = CP->getConstants();
   for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
     if (Constants[i].isMachineConstantPoolEntry() &&
         (Constants[i].getAlignment() & AlignMask) == 0) {
@@ -217,7 +217,7 @@ ARMConstantPoolSymbol::Create(LLVMContext &C, const char *s,
 int ARMConstantPoolSymbol::getExistingMachineCPValue(MachineConstantPool *CP,
                                                      unsigned Alignment) {
   unsigned AlignMask = Alignment - 1;
-  const std::vector<MachineConstantPoolEntry> Constants = CP->getConstants();
+  const std::vector<MachineConstantPoolEntry> &Constants = CP->getConstants();
   for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
     if (Constants[i].isMachineConstantPoolEntry() &&
         (Constants[i].getAlignment() & AlignMask) == 0) {
@@ -272,7 +272,7 @@ ARMConstantPoolMBB *ARMConstantPoolMBB::Create(LLVMContext &C,
 int ARMConstantPoolMBB::getExistingMachineCPValue(MachineConstantPool *CP,
                                                   unsigned Alignment) {
   unsigned AlignMask = Alignment - 1;
-  const std::vector<MachineConstantPoolEntry> Constants = CP->getConstants();
+  const std::vector<MachineConstantPoolEntry> &Constants = CP->getConstants();
   for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
     if (Constants[i].isMachineConstantPoolEntry() &&
         (Constants[i].getAlignment() & AlignMask) == 0) {
diff --git a/llvm/lib/Target/Hexagon/HexagonHardwareLoops.cpp b/llvm/lib/Target/Hexagon/HexagonHardwareLoops.cpp
index 3c4ca0fc813..52d5ab2fee2 100644
--- a/llvm/lib/Target/Hexagon/HexagonHardwareLoops.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonHardwareLoops.cpp
@@ -871,7 +871,7 @@ bool HexagonHardwareLoops::isInvalidLoopOperation(
 /// \brief - Return true if the loop contains an instruction that inhibits
 /// the use of the hardware loop function.
 bool HexagonHardwareLoops::containsInvalidInstruction(MachineLoop *L) const {
-  const std::vector<MachineBasicBlock*> Blocks = L->getBlocks();
+  const std::vector<MachineBasicBlock *> &Blocks = L->getBlocks();
   for (unsigned i = 0, e = Blocks.size(); i != e; ++i) {
     MachineBasicBlock *MBB = Blocks[i];
     for (MachineBasicBlock::iterator
diff --git a/llvm/lib/Target/SystemZ/SystemZConstantPoolValue.cpp b/llvm/lib/Target/SystemZ/SystemZConstantPoolValue.cpp
index e9c4f6df52c..6c7081169a9 100644
--- a/llvm/lib/Target/SystemZ/SystemZConstantPoolValue.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZConstantPoolValue.cpp
@@ -39,7 +39,7 @@ unsigned SystemZConstantPoolValue::getRelocationInfo() const {
 int SystemZConstantPoolValue::
 getExistingMachineCPValue(MachineConstantPool *CP, unsigned Alignment) {
   unsigned AlignMask = Alignment - 1;
-  const std::vector<MachineConstantPoolEntry> Constants = CP->getConstants();
+  const std::vector<MachineConstantPoolEntry> &Constants = CP->getConstants();
   for (unsigned I = 0, E = Constants.size(); I != E; ++I) {
     if (Constants[I].isMachineConstantPoolEntry() &&
         (Constants[I].getAlignment() & AlignMask) == 0) {