[llvm-commits] [llvm] r76424 - /llvm/trunk/lib/Target/ARM/ARMISelDAGToDAG.cpp

[David Goodwin]

Author: david_goodwin
Date: Mon Jul 20 10:55:39 2009
New Revision: 76424

URL: http://llvm.org/viewvc/llvm-project?rev=76424&view=rev
Log:
Use t2LDRri12 for frame index loads.

Modified:
    llvm/trunk/lib/Target/ARM/ARMISelDAGToDAG.cpp

Modified: llvm/trunk/lib/Target/ARM/ARMISelDAGToDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMISelDAGToDAG.cpp?rev=76424&r1=76423&r2=76424&view=diff

==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMISelDAGToDAG.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMISelDAGToDAG.cpp Mon Jul 20 10:55:39 2009
@@ -596,8 +596,17 @@
 bool ARMDAGToDAGISel::SelectT2AddrModeImm12(SDValue Op, SDValue N,
                                             SDValue &Base, SDValue &OffImm) {
   // Match simple R + imm12 operands.
-  if (N.getOpcode() != ISD::ADD)
+
+  // Match frame index...
+  if (N.getOpcode() != ISD::ADD) {
+    if (N.getOpcode() == ISD::FrameIndex) {
+      int FI = cast<FrameIndexSDNode>(N)->getIndex();
+      Base = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
+      OffImm  = CurDAG->getTargetConstant(0, MVT::i32);
+      return true;
+    }
     return false;
+  }
 
   if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
     int RHSC = (int)RHS->getZExtValue();
@@ -686,8 +695,7 @@
   if (N.getOpcode() != ISD::ADD && N.getOpcode() != ISD::SUB) {
     Base = N;
     if (N.getOpcode() == ISD::FrameIndex) {
-      int FI = cast<FrameIndexSDNode>(N)->getIndex();
-      Base = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
+      return false;  // we want to select t2LDRri12 instead
     } else if (N.getOpcode() == ARMISD::Wrapper) {
       Base = N.getOperand(0);
       if (Base.getOpcode() == ISD::TargetConstantPool)