do not share old induction variables when this would result in invalid

instructions (that would have to be split later)

llvm-svn: 35227

1 files changed, 18 insertions, 0 deletions

diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
index bd7fa5cf6c7..17a41c5aaaa 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -1379,6 +1379,24 @@ bool ARMTargetLowering::isLegalAddressScale(int64_t S, const Type *Ty) const {
   }
 }
 
+/// isLegalAddressScaleAndImm - Return true if S works for IsLegalAddressScale
+/// and V works for isLegalAddressImmediate _and_ both can be applied
+/// simultaneously to the same instruction.
+bool ARMTargetLowering::isLegalAddressScaleAndImm(int64_t S, int64_t V, 
+                                               const Type* Ty) const {
+  if (V == 0)
+    return isLegalAddressScale(S, Ty);
+  return false;
+}
+
+/// isLegalAddressScaleAndImm - Return true if S works for IsLegalAddressScale
+/// and GV works for isLegalAddressImmediate _and_ both can be applied
+/// simultaneously to the same instruction.
+bool ARMTargetLowering::isLegalAddressScaleAndImm(int64_t S, 
+                                               GlobalValue *GV) const {
+  return false;
+}
+
 static bool getIndexedAddressParts(SDNode *Ptr, MVT::ValueType VT,
                                    bool isSEXTLoad, SDOperand &Base,
                                    SDOperand &Offset, bool &isInc,