Add <imp-def> and <imp-kill> operands when replacing virtual sub-register defs and kills.

An instruction like this:

  %reg1097:1<def> = VMOVSR %R3<kill>, 14, %reg0

Must be replaced with this when substituting physical registers:

  %S0<def> = VMOVSR %R3<kill>, 14, %reg0, %D0<imp-def>

llvm-svn: 92812

1 files changed, 9 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
index 358ea3fd71a..f9c20e64730 100644
--- a/llvm/lib/CodeGen/MachineInstr.cpp
+++ b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -1314,3 +1314,12 @@ bool MachineInstr::addRegisterDead(unsigned IncomingReg,
                                        true  /*IsDead*/));
   return true;
 }
+
+void MachineInstr::addRegisterDefined(unsigned IncomingReg,
+                                      const TargetRegisterInfo *RegInfo) {
+  MachineOperand *MO = findRegisterDefOperand(IncomingReg, false, RegInfo);
+  if (!MO || MO->getSubReg())
+    addOperand(MachineOperand::CreateReg(IncomingReg,
+                                         true  /*IsDef*/,
+                                         true  /*IsImp*/));
+}