Added isLegalAddressExpression hook to test if the given expression can be

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

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index faa5029569..8df7d8da39 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -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.