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Added a target specific hook to check whether / how a node can be transformed

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into a pair of base / offset nodes for pre-indexed load / store ops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31407 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-11-03 03:04:06 +00:00
parent 7ceebb437e
commit 24d9cf025d
1 changed files with 10 additions and 0 deletions
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10
include/llvm/Target/TargetLowering.h
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@ -371,6 +371,16 @@ public:
unsigned getJumpBufAlignment() const { unsigned getJumpBufAlignment() const {
return JumpBufAlignment; return JumpBufAlignment;
} }
/// getLegalPreIndexedAddressBase - returns true by value, base pointer and
/// offset pointer and addressing mode by reference if the node's address
/// can be legally represented as pre-indexed load / store address.
virtual bool getLegalPreIndexedAddressBase(SDNode *N, SDOperand &Base,
SDOperand &Offset,
ISD::MemOpAddrMode &AM,
SelectionDAG &DAG) {
return false;
}
//===--------------------------------------------------------------------===// //===--------------------------------------------------------------------===//
// TargetLowering Optimization Methods // TargetLowering Optimization Methods