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-rw-r--r--utils/TableGen/AsmWriterEmitter.cpp27
1 files changed, 15 insertions, 12 deletions
diff --git a/utils/TableGen/AsmWriterEmitter.cpp b/utils/TableGen/AsmWriterEmitter.cpp
index 7165effa863..57889ca7542 100644
--- a/utils/TableGen/AsmWriterEmitter.cpp
+++ b/utils/TableGen/AsmWriterEmitter.cpp
@@ -1008,20 +1008,23 @@ void AsmWriterEmitter::EmitPrintAliasInstruction(raw_ostream &O) {
O << "void " << Target.getName() << ClassName << "::"
<< "printCustomAliasOperand(\n"
<< " const MCInst *MI, unsigned OpIdx,\n"
- << " unsigned PrintMethodIdx, raw_ostream &OS) {\n"
- << " switch (PrintMethodIdx) {\n"
- << " default:\n"
- << " llvm_unreachable(\"Unknown PrintMethod kind\");\n"
- << " break;\n";
-
- for (unsigned i = 0; i < PrintMethods.size(); ++i) {
- O << " case " << i << ":\n"
- << " " << PrintMethods[i] << "(MI, OpIdx, OS);\n"
+ << " unsigned PrintMethodIdx, raw_ostream &OS) {\n";
+ if (PrintMethods.empty())
+ O << " llvm_unreachable(\"Unknown PrintMethod kind\");\n";
+ else {
+ O << " switch (PrintMethodIdx) {\n"
+ << " default:\n"
+ << " llvm_unreachable(\"Unknown PrintMethod kind\");\n"
<< " break;\n";
- }
- O << " }\n"
- << "}\n\n";
+ for (unsigned i = 0; i < PrintMethods.size(); ++i) {
+ O << " case " << i << ":\n"
+ << " " << PrintMethods[i] << "(MI, OpIdx, OS);\n"
+ << " break;\n";
+ }
+ O << " }\n";
+ }
+ O << "}\n\n";
O << "#endif // PRINT_ALIAS_INSTR\n";
}