Before implementing copyfromreg, we'll implement copytoreg correctly.

This gets us this for the previous testcase:

_test:
        lis r2, 0
        ori r3, r2, 65535
        blr

Note that we actually write to r3 (the return reg) correctly now :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22933 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 2 deletions

diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
index 87943f9253..d77578e286 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
@@ -36,14 +36,16 @@ namespace {
     MachineBasicBlock *BB;
     const TargetMachine &TM;
     const TargetInstrInfo &TII;
+    const MRegisterInfo &MRI;
     SSARegMap *RegMap;
     
     std::map<SDNode *, unsigned> EmittedOps;
   public:
     SimpleSched(SelectionDAG &D, MachineBasicBlock *bb)
       : DAG(D), BB(bb), TM(D.getTarget()), TII(*TM.getInstrInfo()),
-        RegMap(BB->getParent()->getSSARegMap()) {
+        MRI(*TM.getRegisterInfo()), RegMap(BB->getParent()->getSSARegMap()) {
       assert(&TII && "Target doesn't provide instr info?");
+      assert(&MRI && "Target doesn't provide register info?");
     }
     
     void Run() {
@@ -131,7 +133,9 @@ unsigned SimpleSched::Emit(SDOperand Op) {
     case ISD::EntryToken: break;
     case ISD::CopyToReg: {
       unsigned Val = Emit(Op.getOperand(2));
-      // FIXME: DO THE COPY NOW.
+      MRI.copyRegToReg(*BB, BB->end(),
+                       cast<RegisterSDNode>(Op.getOperand(1))->getReg(), Val,
+                       RegMap->getRegClass(Val));
       break;
     }
     }