[llvm-commits] [llvm] r77632 - /llvm/trunk/lib/Target/ARM/ARMISelDAGToDAG.cpp
David Goodwin
david_goodwin at apple.com
Thu Jul 30 15:45:53 PDT 2009
Author: david_goodwin
Date: Thu Jul 30 17:45:52 2009
New Revision: 77632
URL: http://llvm.org/viewvc/llvm-project?rev=77632&view=rev
Log:
Remove redundant match for frame index from imm8 addrmode, it is handled by the imm12 addrmode.
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=77632&r1=77631&r2=77632&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMISelDAGToDAG.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMISelDAGToDAG.cpp Thu Jul 30 17:45:52 2009
@@ -630,31 +630,21 @@
bool ARMDAGToDAGISel::SelectT2AddrModeImm8(SDValue Op, SDValue N,
SDValue &Base, SDValue &OffImm) {
// Match simple R - imm8 operands.
-
- // Match frame index...
- if ((N.getOpcode() != ISD::ADD) && (N.getOpcode() != ISD::SUB)) {
- 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->getSExtValue();
- if (N.getOpcode() == ISD::SUB)
- RHSC = -RHSC;
-
- if ((RHSC >= -255) && (RHSC <= 0)) { // 8 bits (always negative)
- Base = N.getOperand(0);
- if (Base.getOpcode() == ISD::FrameIndex) {
- int FI = cast<FrameIndexSDNode>(Base)->getIndex();
- Base = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
+ if ((N.getOpcode() == ISD::ADD) || (N.getOpcode() == ISD::SUB)) {
+ if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
+ int RHSC = (int)RHS->getSExtValue();
+ if (N.getOpcode() == ISD::SUB)
+ RHSC = -RHSC;
+
+ if ((RHSC >= -255) && (RHSC <= 0)) { // 8 bits (always negative)
+ Base = N.getOperand(0);
+ if (Base.getOpcode() == ISD::FrameIndex) {
+ int FI = cast<FrameIndexSDNode>(Base)->getIndex();
+ Base = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
+ }
+ OffImm = CurDAG->getTargetConstant(RHSC, MVT::i32);
+ return true;
}
- OffImm = CurDAG->getTargetConstant(RHSC, MVT::i32);
- return true;
}
}
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