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Added isLegalAddressExpression hook to test if the given expression can be

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folded into target addressing mode for the given type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35121 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-03-16 08:42:32 +00:00
parent 2864eee7a3
commit 14245a9d62
2 changed files with 15 additions and 1 deletions
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8
include/llvm/Target/TargetLowering.h
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@ -855,7 +855,13 @@ public:
//===--------------------------------------------------------------------===//
// Loop Strength Reduction hooks
//
/// isLegalAddressExpression - Return true if the binary expression made up of
/// specified opcode, operands, and type can be folded into target addressing
/// mode for load / store of the given type.
virtual bool isLegalAddressExpression(unsigned Opc, Value *Op0, Value *Op1,
const Type *Ty) const;
/// isLegalAddressImmediate - Return true if the integer value can be used as
/// the offset of the target addressing mode for load / store of the given
/// type.

8
lib/CodeGen/SelectionDAG/TargetLowering.cpp
View File

@ -1931,6 +1931,14 @@ getRegForInlineAsmConstraint(const std::string &Constraint,
// Loop Strength Reduction hooks
//===----------------------------------------------------------------------===//
/// isLegalAddressExpression - Return true if the binary expression made up of
/// specified opcode, operands, and type can be folded into target addressing
/// mode for load / store of the given type.
bool TargetLowering::isLegalAddressExpression(unsigned Opc, Value *Op0,
Value *Op1, const Type *Ty) const {
return false;
}
/// isLegalAddressImmediate - Return true if the integer value can be used as
/// the offset of the target addressing mode for load / store of the given
/// type.