Modify the two address instruction pass to remove the duplicate

operand of the instruction and thus simplify the register allocation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11124 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 2 deletions

diff --git a/include/llvm/CodeGen/MachineInstrBuilder.h b/include/llvm/CodeGen/MachineInstrBuilder.h
index 67255214a2..e0f9736100 100644
--- a/include/llvm/CodeGen/MachineInstrBuilder.h
+++ b/include/llvm/CodeGen/MachineInstrBuilder.h
@@ -138,9 +138,10 @@ inline MachineInstrBuilder BuildMI(int Opcode, unsigned NumOperands) {
 /// calls that are expected, it does not include the destination register.
 ///
 inline MachineInstrBuilder BuildMI(int Opcode, unsigned NumOperands,
-                                   unsigned DestReg) {
+                                   unsigned DestReg,
+                                   MOTy::UseType useType = MOTy::Def) {
   return MachineInstrBuilder(new MachineInstr(Opcode, NumOperands+1,
-                                   true, true)).addReg(DestReg, MOTy::Def);
+                                   true, true)).addReg(DestReg, useType);
 }