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More flexible TargetLowering LSR hooks for testing whether an immediate is a legal target address immediate or scale.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35076 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-03-12 23:37:10 +00:00
parent b01fad6d19
commit c289faf015
1 changed files with 13 additions and 3 deletions
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16
lib/CodeGen/SelectionDAG/TargetLowering.cpp
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@ -1931,15 +1931,25 @@ getRegForInlineAsmConstraint(const std::string &Constraint,
// Loop Strength Reduction hooks
//===----------------------------------------------------------------------===//
/// isLegalAddressImmediate - Return true if the integer value or
/// GlobalValue can be used as the offset of the target addressing mode.
bool TargetLowering::isLegalAddressImmediate(int64_t V) 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.
bool TargetLowering::isLegalAddressImmediate(int64_t V, const Type *Ty) const {
return false;
}
/// isLegalAddressImmediate - Return true if the GlobalValue can be used as
/// the offset of the target addressing mode.
bool TargetLowering::isLegalAddressImmediate(GlobalValue *GV) const {
return false;
}
/// isLegalAddressScale - Return true if the integer value can be used as the
/// scale of the target addressing mode for load / store of the given type.
bool TargetLowering::isLegalAddressScale(int64_t S, const Type *Ty) const {
return false;
}
// Magic for divide replacement