Allow targets to optionally specify custom binary encoder functions for
operand values. This is useful for operands which require additional trickery
to encode into the instruction. For example, the ARM shifted immediate and
shifted register operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116353 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/CodeGenInstruction.cpp b/utils/TableGen/CodeGenInstruction.cpp
index 722ae53..6e71502 100644
--- a/utils/TableGen/CodeGenInstruction.cpp
+++ b/utils/TableGen/CodeGenInstruction.cpp
@@ -166,10 +166,14 @@
Record *Rec = Arg->getDef();
std::string PrintMethod = "printOperand";
+ std::string EncoderMethod;
unsigned NumOps = 1;
DagInit *MIOpInfo = 0;
if (Rec->isSubClassOf("Operand")) {
PrintMethod = Rec->getValueAsString("PrintMethod");
+ // If there is an explicit encoder method, use it.
+ if (Rec->getValue("EncoderMethod"))
+ EncoderMethod = Rec->getValueAsString("EncoderMethod");
MIOpInfo = Rec->getValueAsDag("MIOperandInfo");
// Verify that MIOpInfo has an 'ops' root value.
@@ -204,7 +208,7 @@
throw "In instruction '" + R->getName() + "', operand #" + utostr(i) +
" has the same name as a previous operand!";
- OperandList.push_back(OperandInfo(Rec, ArgName, PrintMethod,
+ OperandList.push_back(OperandInfo(Rec, ArgName, PrintMethod, EncoderMethod,
MIOperandNo, NumOps, MIOpInfo));
MIOperandNo += NumOps;
}