[llvm] 4956655 - [X86] X86InstrInfo.cpp - try to pass DebugLoc by const-ref to avoid costly TrackingMDNodeRef copies. NFCI.

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2021-05-13T13:31:53+01:00
New Revision: 4956655640c19190264b07740499e56ccb33c61f

URL: https://github.com/llvm/llvm-project/commit/4956655640c19190264b07740499e56ccb33c61f
DIFF: https://github.com/llvm/llvm-project/commit/4956655640c19190264b07740499e56ccb33c61f.diff

LOG: [X86] X86InstrInfo.cpp - try to pass DebugLoc by const-ref to avoid costly TrackingMDNodeRef copies. NFCI.

Added: 
    

Modified: 
    llvm/lib/Target/X86/X86InstrInfo.cpp

Removed: 
    


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diff  --git a/llvm/lib/Target/X86/X86InstrInfo.cpp b/llvm/lib/Target/X86/X86InstrInfo.cpp
index 981c735c4239..dc163e4181b8 100644
--- a/llvm/lib/Target/X86/X86InstrInfo.cpp
+++ b/llvm/lib/Target/X86/X86InstrInfo.cpp
@@ -4498,7 +4498,7 @@ static bool Expand2AddrKreg(MachineInstrBuilder &MIB, const MCInstrDesc &Desc,
 static bool expandMOV32r1(MachineInstrBuilder &MIB, const TargetInstrInfo &TII,
                           bool MinusOne) {
   MachineBasicBlock &MBB = *MIB->getParent();
-  DebugLoc DL = MIB->getDebugLoc();
+  const DebugLoc &DL = MIB->getDebugLoc();
   Register Reg = MIB.getReg(0);
 
   // Insert the XOR.
@@ -4517,7 +4517,7 @@ static bool ExpandMOVImmSExti8(MachineInstrBuilder &MIB,
                                const TargetInstrInfo &TII,
                                const X86Subtarget &Subtarget) {
   MachineBasicBlock &MBB = *MIB->getParent();
-  DebugLoc DL = MIB->getDebugLoc();
+  const DebugLoc &DL = MIB->getDebugLoc();
   int64_t Imm = MIB->getOperand(1).getImm();
   assert(Imm != 0 && "Using push/pop for 0 is not efficient.");
   MachineBasicBlock::iterator I = MIB.getInstr();
@@ -4574,7 +4574,7 @@ static bool ExpandMOVImmSExti8(MachineInstrBuilder &MIB,
 static void expandLoadStackGuard(MachineInstrBuilder &MIB,
                                  const TargetInstrInfo &TII) {
   MachineBasicBlock &MBB = *MIB->getParent();
-  DebugLoc DL = MIB->getDebugLoc();
+  const DebugLoc &DL = MIB->getDebugLoc();
   Register Reg = MIB.getReg(0);
   const GlobalValue *GV =
       cast<GlobalValue>((*MIB->memoperands_begin())->getValue());