AsmWriterEmitter.cpp assumes that all operands of a printed alias

will appear after a blank. This assumption does not hold in the ARM
target.

Patch by: Roger Ferrer Ibanez

Differential Revision: http://reviews.llvm.org/D20234

llvm-svn: 271666

llvm/utils/TableGen/AsmWriterEmitter.cpp

@@ -1007,13 +1007,14 @@ void AsmWriterEmitter::EmitPrintAliasInstruction(raw_ostream &O) {
   // Code that prints the alias, replacing the operands with the ones from the
   // MCInst.
   O << "  unsigned I = 0;\n";
-  O << "  while (AsmString[I] != ' ' && AsmString[I] != '\t' &&\n";
-  O << "         AsmString[I] != '\\0')\n";
+  O << "  while (AsmString[I] != ' ' && AsmString[I] != '\\t' &&\n";
+  O << "         AsmString[I] != '$' && AsmString[I] != '\\0')\n";
   O << "    ++I;\n";
   O << "  OS << '\\t' << StringRef(AsmString, I);\n";
 
   O << "  if (AsmString[I] != '\\0') {\n";
-  O << "    OS << '\\t';\n";
+  O << "    if (AsmString[I] == ' ' || AsmString[I] == '\\t')";
+  O << "      OS << '\\t';\n";
   O << "    do {\n";
   O << "      if (AsmString[I] == '$') {\n";
   O << "        ++I;\n";