enhance llvm-mc -show-inst to print the enum of an instruction, like so:
testb %al, %al ## <MCInst #2412 TEST8rr
## <MCOperand Reg:2>
## <MCOperand Reg:2>>
jne LBB1_7 ## <MCInst #938 JNE_1
## <MCOperand Expr:(LBB1_7)>>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95935 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/AsmWriterEmitter.cpp b/utils/TableGen/AsmWriterEmitter.cpp
index 143a2f7..3a38dd4 100644
--- a/utils/TableGen/AsmWriterEmitter.cpp
+++ b/utils/TableGen/AsmWriterEmitter.cpp
@@ -494,11 +494,55 @@
<< "}\n";
}
+void AsmWriterEmitter::EmitGetInstructionName(raw_ostream &O) {
+ CodeGenTarget Target;
+ Record *AsmWriter = Target.getAsmWriter();
+ std::string ClassName = AsmWriter->getValueAsString("AsmWriterClassName");
+
+ std::vector<const CodeGenInstruction*> NumberedInstructions;
+ Target.getInstructionsByEnumValue(NumberedInstructions);
+
+ StringToOffsetTable StringTable;
+ O <<
+"\n\n#ifdef GET_INSTRUCTION_NAME\n"
+"#undef GET_INSTRUCTION_NAME\n\n"
+"/// getInstructionName: This method is automatically generated by tblgen\n"
+"/// from the instruction set description. This returns the enum name of the\n"
+"/// specified instruction.\n"
+ "const char *" << Target.getName() << ClassName
+ << "::getInstructionName(unsigned Opcode) {\n"
+ << " assert(Opcode < " << NumberedInstructions.size()
+ << " && \"Invalid instruction number!\");\n"
+ << "\n"
+ << " static const unsigned InstAsmOffset[] = {";
+ for (unsigned i = 0, e = NumberedInstructions.size(); i != e; ++i) {
+ const CodeGenInstruction &Inst = *NumberedInstructions[i];
+
+ std::string AsmName = Inst.TheDef->getName();
+ if ((i % 14) == 0)
+ O << "\n ";
+
+ O << StringTable.GetOrAddStringOffset(AsmName) << ", ";
+ }
+ O << "0\n"
+ << " };\n"
+ << "\n";
+
+ O << " const char *Strs =\n";
+ StringTable.EmitString(O);
+ O << ";\n";
+
+ O << " return Strs+InstAsmOffset[Opcode];\n"
+ << "}\n\n#endif\n";
+}
+
+
void AsmWriterEmitter::run(raw_ostream &O) {
EmitSourceFileHeader("Assembly Writer Source Fragment", O);
EmitPrintInstruction(O);
EmitGetRegisterName(O);
+ EmitGetInstructionName(O);
}