GlobalISel: add specialized buildCopy function to MachineInstrBuilder.

NFC.

llvm-svn: 276763
diff --git a/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp b/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
index c581439..9ce7fe4 100644
--- a/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
@@ -102,8 +102,8 @@
 
 bool IRTranslator::translateBitCast(const CastInst &CI) {
   if (LLT{*CI.getDestTy()} == LLT{*CI.getSrcTy()}) {
-    MIRBuilder.buildInstr(TargetOpcode::COPY, getOrCreateVReg(CI),
-                          getOrCreateVReg(*CI.getOperand(0)));
+    MIRBuilder.buildCopy(getOrCreateVReg(CI),
+                         getOrCreateVReg(*CI.getOperand(0)));
     return true;
   }
   return translateCast(TargetOpcode::G_BITCAST, CI);
diff --git a/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp b/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
index fb9b296..a426776 100644
--- a/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
@@ -90,6 +90,10 @@
   return NewMI;
 }
 
+MachineInstr *MachineIRBuilder::buildCopy(unsigned Res, unsigned Op) {
+  return buildInstr(TargetOpcode::COPY, Res, Op);
+}
+
 MachineInstr *MachineIRBuilder::buildExtract(LLT Ty, ArrayRef<unsigned> Results,
                                              unsigned Src,
                                              ArrayRef<unsigned> Indexes) {
diff --git a/llvm/lib/CodeGen/GlobalISel/RegBankSelect.cpp b/llvm/lib/CodeGen/GlobalISel/RegBankSelect.cpp
index e9e42b0..521bb79 100644
--- a/llvm/lib/CodeGen/GlobalISel/RegBankSelect.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/RegBankSelect.cpp
@@ -126,7 +126,7 @@
          "We are about to create several defs for Dst");
 
   // Build the instruction used to repair, then clone it at the right places.
-  MachineInstr *MI = MIRBuilder.buildInstr(TargetOpcode::COPY, Dst, Src);
+  MachineInstr *MI = MIRBuilder.buildCopy(Dst, Src);
   MI->removeFromParent();
   DEBUG(dbgs() << "Copy: " << PrintReg(Src) << " to: " << PrintReg(Dst)
                << '\n');