Fix frame index elimination to correctly handle thumb-2 addressing modes that don't allow negative offsets. During frame elimination convert *i12 opcode to a *i8 when necessary due to a negative offset.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76883 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/Thumb1InstrInfo.cpp b/lib/Target/ARM/Thumb1InstrInfo.cpp
index ddc6e0d..7bec736 100644
--- a/lib/Target/ARM/Thumb1InstrInfo.cpp
+++ b/lib/Target/ARM/Thumb1InstrInfo.cpp
@@ -30,6 +30,12 @@
return 0;
}
+unsigned
+Thumb1InstrInfo::unsignedOffsetOpcodeToSigned(unsigned opcode,
+ unsigned *NumBits) const {
+ return 0;
+}
+
unsigned Thumb1InstrInfo::getOpcode(ARMII::Op Op) const {
switch (Op) {
case ARMII::ADDri: return ARM::tADDi8;