Add support for alternative register names, useful for instructions whose operands are logically equivalent to existing registers, but happen to be printed specially. For example, an instruciton that prints d0[0] instead of s0.
Patch by Jim Grosbach.
llvm-svn: 133940
diff --git a/llvm/utils/TableGen/FixedLenDecoderEmitter.cpp b/llvm/utils/TableGen/FixedLenDecoderEmitter.cpp
index 9312fe8..ba6cd86 100644
--- a/llvm/utils/TableGen/FixedLenDecoderEmitter.cpp
+++ b/llvm/utils/TableGen/FixedLenDecoderEmitter.cpp
@@ -1305,8 +1305,10 @@
RecordRecTy *Type = dynamic_cast<RecordRecTy*>(TI->getType());
Record *TypeRecord = Type->getRecord();
bool isReg = false;
+ if (TypeRecord->isSubClassOf("RegisterOperand"))
+ TypeRecord = TypeRecord->getValueAsDef("RegClass");
if (TypeRecord->isSubClassOf("RegisterClass")) {
- Decoder = "Decode" + Type->getRecord()->getName() + "RegisterClass";
+ Decoder = "Decode" + TypeRecord->getName() + "RegisterClass";
isReg = true;
}