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[TableGen] Add support for negative immediates to AsmMatcherEmitter

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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!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226073 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel 2015-01-15 01:33:00 +00:00
parent 47ab8c106f
commit 5a40bef797
1 changed files with 2 additions and 0 deletions
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2
utils/TableGen/AsmMatcherEmitter.cpp
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@ -979,6 +979,7 @@ static std::string getEnumNameForToken(StringRef Str) {
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(CodeGenTarget &Target, StringRef ClassName,
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;