[llvm] r226073 - [TableGen] Add support for negative immediates to AsmMatcherEmitter

[Hal Finkel]

Author: hfinkel
Date: Wed Jan 14 19:33:00 2015
New Revision: 226073

URL: http://llvm.org/viewvc/llvm-project?rev=226073&view=rev
Log:
[TableGen] Add support for negative immediates to AsmMatcherEmitter

This adds support for creating an InstAlias with a negative immediate, i.e.:

  def NOT : InstAlias<"not $dst, $src", (XORI GR32:$dst, GR32:$src, -1)>;

by resolving this problem:

RISCVGenAsmMatcher.inc:95:11: error: expected '= constant-expression' or end of enumerator definition
  CVT_imm_-1,
  ^^^^^^^^^^

Patch by Jordy Potman, thanks!

Modified:
    llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp

Modified: llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp?rev=226073&r1=226072&r2=226073&view=diff
==============================================================================
--- llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp (original)
+++ llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp Wed Jan 14 19:33:00 2015
@@ -979,6 +979,7 @@ static std::string getEnumNameForToken(S
     case '.': Res += "_DOT_"; break;
     case '<': Res += "_LT_"; break;
     case '>': Res += "_GT_"; break;
+    case '-': Res += "_MINUS_"; break;
     default:
       if ((*it >= 'A' && *it <= 'Z') ||
           (*it >= 'a' && *it <= 'z') ||
@@ -1848,6 +1849,7 @@ static void emitConvertFuncs(CodeGenTarg
       case MatchableInfo::ResOperand::ImmOperand: {
         int64_t Val = OpInfo.ImmVal;
         std::string Ty = "imm_" + itostr(Val);
+        Ty = getEnumNameForToken(Ty);
         Signature += "__" + Ty;
 
         std::string Name = "CVT_" + Ty;