Enhance the fixed-length decoder emitter to support parsing scattered fields.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136405 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/FixedLenDecoderEmitter.h b/utils/TableGen/FixedLenDecoderEmitter.h
index fc3710e..300a2f4 100644
--- a/utils/TableGen/FixedLenDecoderEmitter.h
+++ b/utils/TableGen/FixedLenDecoderEmitter.h
@@ -22,13 +22,29 @@
namespace llvm {
+struct EncodingField {
+ unsigned Base, Width, Offset;
+ EncodingField(unsigned B, unsigned W, unsigned O)
+ : Base(B), Width(W), Offset(O) { }
+};
+
struct OperandInfo {
- unsigned FieldBase;
- unsigned FieldLength;
+ std::vector<EncodingField> Fields;
std::string Decoder;
- OperandInfo(unsigned FB, unsigned FL, std::string D)
- : FieldBase(FB), FieldLength(FL), Decoder(D) { }
+ OperandInfo(std::string D)
+ : Decoder(D) { }
+
+ void addField(unsigned Base, unsigned Width, unsigned Offset) {
+ Fields.push_back(EncodingField(Base, Width, Offset));
+ }
+
+ unsigned numFields() { return Fields.size(); }
+
+ typedef std::vector<EncodingField>::iterator iterator;
+
+ iterator begin() { return Fields.begin(); }
+ iterator end() { return Fields.end(); }
};
class FixedLenDecoderEmitter : public TableGenBackend {