Have MachineFunction cache a pointer to the subtarget to make lookups

shorter/easier and have the DAG use that to do the same lookup. This
can be used in the future for TargetMachine based caching lookups from
the MachineFunction easily.

Update the MIPS subtarget switching machinery to update this pointer
at the same time it runs.

llvm-svn: 214838

1 files changed, 3 insertions, 6 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
index 4fdd2d6fef9..c10803f55b7 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
@@ -37,8 +37,7 @@ std::string SDNode::getOperationName(const SelectionDAG *G) const {
       return "<<Unknown DAG Node>>";
     if (isMachineOpcode()) {
       if (G)
-        if (const TargetInstrInfo *TII =
-                G->getTarget().getSubtargetImpl()->getInstrInfo())
+        if (const TargetInstrInfo *TII = G->getSubtarget().getInstrInfo())
           if (getMachineOpcode() < TII->getNumOpcodes())
             return TII->getName(getMachineOpcode());
       return "<<Unknown Machine Node #" + utostr(getOpcode()) + ">>";
@@ -435,10 +434,8 @@ void SDNode::print_details(raw_ostream &OS, const SelectionDAG *G) const {
       OS << LBB->getName() << " ";
     OS << (const void*)BBDN->getBasicBlock() << ">";
   } else if (const RegisterSDNode *R = dyn_cast<RegisterSDNode>(this)) {
-    OS << ' '
-       << PrintReg(R->getReg(),
-                   G ? G->getTarget().getSubtargetImpl()->getRegisterInfo()
-                     : nullptr);
+    OS << ' ' << PrintReg(R->getReg(),
+                          G ? G->getSubtarget().getRegisterInfo() : nullptr);
   } else if (const ExternalSymbolSDNode *ES =
              dyn_cast<ExternalSymbolSDNode>(this)) {
     OS << "'" << ES->getSymbol() << "'";