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| author | Sanjiv Gupta <sanjiv.gupta@microchip.com> | 2009-06-23 07:10:19 +0000 |
|---|---|---|
| committer | Sanjiv Gupta <sanjiv.gupta@microchip.com> | 2009-06-23 07:10:19 +0000 |
| commit | ae99227ef9c68b6cedcb2ae5971fd2072b598d49 (patch) | |
| tree | 0f15093b1efe6c993610a0590f7fce8a2f019a3e /lib/Target | |
| parent | 8dfbe6c853e3e48b6e7b5957a4e028835ffe4400 (diff) | |
| download | external_llvm-ae99227ef9c68b6cedcb2ae5971fd2072b598d49.zip external_llvm-ae99227ef9c68b6cedcb2ae5971fd2072b598d49.tar.gz external_llvm-ae99227ef9c68b6cedcb2ae5971fd2072b598d49.tar.bz2 | |
Fold the add (ptr, offset) into ptr[offset] only if the offset is small enough. movwi and moviw allow value of 5-bits only (i.e. 32).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73953 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target')
| -rw-r--r-- | lib/Target/PIC16/PIC16ISelLowering.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/Target/PIC16/PIC16ISelLowering.cpp b/lib/Target/PIC16/PIC16ISelLowering.cpp index f113a48..122af70 100644 --- a/lib/Target/PIC16/PIC16ISelLowering.cpp +++ b/lib/Target/PIC16/PIC16ISelLowering.cpp @@ -702,10 +702,12 @@ void PIC16TargetLowering::LegalizeAddress(SDValue Ptr, SelectionDAG &DAG, if (Ptr.getOpcode() == ISD::ADD) { SDValue OperLeft = Ptr.getOperand(0); SDValue OperRight = Ptr.getOperand(1); - if (OperLeft.getOpcode() == ISD::Constant) { + if ((OperLeft.getOpcode() == ISD::Constant) && + (dyn_cast<ConstantSDNode>(OperLeft)->getZExtValue() < 32 )) { Offset = dyn_cast<ConstantSDNode>(OperLeft)->getZExtValue(); Ptr = OperRight; - } else if (OperRight.getOpcode() == ISD::Constant) { + } else if ((OperRight.getOpcode() == ISD::Constant) && + (dyn_cast<ConstantSDNode>(OperRight)->getZExtValue() < 32 )){ Offset = dyn_cast<ConstantSDNode>(OperRight)->getZExtValue(); Ptr = OperLeft; } |