Enable global address legalization, fixing a todo and allowing the removal

of some code.  This exposes the implicit load from the stubs to the DAG, allowing
them to be optimized by the dag combiner.  It also moves darwin specific stuff
out of the isel into the legalizer, and allows more to be moved to the .td file.

llvm-svn: 24397

1 files changed, 1 insertions, 30 deletions

diff --git a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
index 5baec745c94..549f4539dec 100644
--- a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
@@ -428,20 +428,7 @@ bool PPCDAGToDAGISel::SelectAddr(SDOperand Addr, SDOperand &Op1,
     }
   }
 
-  // Now check if we're dealing with a global, and whether or not we should emit
-  // an optimized load or store for statics.
-  if (GlobalAddressSDNode *GN = dyn_cast<GlobalAddressSDNode>(Addr)) {
-    GlobalValue *GV = GN->getGlobal();
-    if (!GV->hasWeakLinkage() && !GV->isExternal()) {
-      Op1 = CurDAG->getTargetGlobalAddress(GV, MVT::i32);
-      if (PICEnabled)
-        Op2 = CurDAG->getTargetNode(PPC::ADDIS, MVT::i32, getGlobalBaseReg(),
-                                    Op1);
-      else
-        Op2 = CurDAG->getTargetNode(PPC::LIS, MVT::i32, Op1);
-      return false;
-    }
-  } else if (FrameIndexSDNode *FI = dyn_cast<FrameIndexSDNode>(Addr)) {
+ if (FrameIndexSDNode *FI = dyn_cast<FrameIndexSDNode>(Addr)) {
     Op1 = getI32Imm(0);
     Op2 = CurDAG->getTargetFrameIndex(FI->getIndex(), MVT::i32);
     return false;
@@ -907,22 +894,6 @@ SDOperand PPCDAGToDAGISel::Select(SDOperand Op) {
     }
     return CurDAG->getTargetNode(PPC::LA, MVT::i32, Tmp, CPI);
   }
-#if 1
-  case ISD::GlobalAddress: {
-    GlobalValue *GV = cast<GlobalAddressSDNode>(N)->getGlobal();
-    SDOperand Tmp;
-    SDOperand GA = CurDAG->getTargetGlobalAddress(GV, MVT::i32);
-    if (PICEnabled)
-      Tmp = CurDAG->getTargetNode(PPC::ADDIS, MVT::i32, getGlobalBaseReg(), GA);
-    else
-      Tmp = CurDAG->getTargetNode(PPC::LIS, MVT::i32, GA);
-
-    if (GV->hasWeakLinkage() || GV->isExternal())
-      return CurDAG->getTargetNode(PPC::LWZ, MVT::i32, GA, Tmp);
-    else
-      return CurDAG->getTargetNode(PPC::LA, MVT::i32, Tmp, GA);
-  }
-#endif
   case ISD::FADD: {
     MVT::ValueType Ty = N->getValueType(0);
     if (!NoExcessFPPrecision) {  // Match FMA ops