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>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92812 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 1 deletions

diff --git a/include/llvm/CodeGen/MachineInstr.h b/include/llvm/CodeGen/MachineInstr.h
index 87b67d6..c2a0578 100644
--- a/include/llvm/CodeGen/MachineInstr.h
+++ b/include/llvm/CodeGen/MachineInstr.h
@@ -288,7 +288,7 @@ public:
   bool addRegisterKilled(unsigned IncomingReg,
                          const TargetRegisterInfo *RegInfo,
                          bool AddIfNotFound = false);
-  
+
   /// addRegisterDead - We have determined MI defined a register without a use.
   /// Look for the operand that defines it and mark it as IsDead. If
   /// AddIfNotFound is true, add a implicit operand if it's not found. Returns
@@ -296,6 +296,11 @@ public:
   bool addRegisterDead(unsigned IncomingReg, const TargetRegisterInfo *RegInfo,
                        bool AddIfNotFound = false);
 
+  /// addRegisterDefined - We have determined MI defines a register. Make sure
+  /// there is an operand defining Reg.
+  void addRegisterDefined(unsigned IncomingReg,
+                          const TargetRegisterInfo *RegInfo);
+
   /// isSafeToMove - Return true if it is safe to move this instruction. If
   /// SawStore is set to true, it means that there is a store (or call) between
   /// the instruction's location and its intended destination.