MIRParser: Add %subreg.xxx syntax for subregister index operands
Differential Revision: http://reviews.llvm.org/D18279
llvm-svn: 264608
diff --git a/llvm/lib/CodeGen/MIRParser/MIParser.cpp b/llvm/lib/CodeGen/MIRParser/MIParser.cpp
index 141aeb5..8c73451 100644
--- a/llvm/lib/CodeGen/MIRParser/MIParser.cpp
+++ b/llvm/lib/CodeGen/MIRParser/MIParser.cpp
@@ -144,6 +144,7 @@
bool parseGlobalValue(GlobalValue *&GV);
bool parseGlobalAddressOperand(MachineOperand &Dest);
bool parseConstantPoolIndexOperand(MachineOperand &Dest);
+ bool parseSubRegisterIndexOperand(MachineOperand &Dest);
bool parseJumpTableIndexOperand(MachineOperand &Dest);
bool parseExternalSymbolOperand(MachineOperand &Dest);
bool parseMDNode(MDNode *&Node);
@@ -1237,6 +1238,17 @@
return false;
}
+bool MIParser::parseSubRegisterIndexOperand(MachineOperand &Dest) {
+ assert(Token.is(MIToken::SubRegisterIndex));
+ StringRef Name = Token.stringValue();
+ unsigned SubRegIndex = getSubRegIndex(Token.stringValue());
+ if (SubRegIndex == 0)
+ return error(Twine("unknown subregister index '") + Name + "'");
+ lex();
+ Dest = MachineOperand::CreateImm(SubRegIndex);
+ return false;
+}
+
bool MIParser::parseMDNode(MDNode *&Node) {
assert(Token.is(MIToken::exclaim));
auto Loc = Token.location();
@@ -1482,6 +1494,8 @@
return parseJumpTableIndexOperand(Dest);
case MIToken::ExternalSymbol:
return parseExternalSymbolOperand(Dest);
+ case MIToken::SubRegisterIndex:
+ return parseSubRegisterIndexOperand(Dest);
case MIToken::exclaim:
return parseMetadataOperand(Dest);
case MIToken::kw_cfi_same_value: