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Pick low-hanging MatchEntry shrinkage fruit.

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Shaves 200k off Release-Asserts clang binaries on i386.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142191 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2011-10-17 16:18:09 +00:00
parent 3bca0b9d6e
commit af482cf301
1 changed files with 17 additions and 4 deletions
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21
utils/TableGen/AsmMatcherEmitter.cpp
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@ -1975,6 +1975,15 @@ static bool EmitMnemonicAliases(raw_ostream &OS, const AsmMatcherInfo &Info) {
return true;
}
static const char *getMinimalTypeForRange(uint64_t Range) {
assert(Range < 0xFFFFFFFFULL && "Enum too large");
if (Range > 0xFFFF)
return "uint32_t";
if (Range > 0xFF)
return "uint16_t";
return "uint8_t";
}
static void EmitCustomOperandParsing(raw_ostream &OS, CodeGenTarget &Target,
const AsmMatcherInfo &Info, StringRef ClassName) {
// Emit the static custom operand parsing table;
@ -2262,9 +2271,12 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
OS << " struct MatchEntry {\n";
OS << " unsigned Opcode;\n";
OS << " const char *Mnemonic;\n";
OS << " ConversionKind ConvertFn;\n";
OS << " MatchClassKind Classes[" << MaxNumOperands << "];\n";
OS << " unsigned RequiredFeatures;\n";
OS << " " << getMinimalTypeForRange(Info.Matchables.size())
<< " ConvertFn;\n";
OS << " " << getMinimalTypeForRange(Info.Classes.size())
<< " Classes[" << MaxNumOperands << "];\n";
OS << " " << getMinimalTypeForRange(1ULL << Info.SubtargetFeatures.size())
<< " RequiredFeatures;\n";
OS << " };\n\n";
OS << " // Predicate for searching for an opcode.\n";
@ -2384,7 +2396,8 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
OS << " OperandsValid = (it->Classes[i] == " <<"InvalidMatchClass);\n";
OS << " break;\n";
OS << " }\n";
OS << " if (ValidateOperandClass(Operands[i+1], it->Classes[i]))\n";
OS << " if (ValidateOperandClass(Operands[i+1], "
"(MatchClassKind)it->Classes[i]))\n";
OS << " continue;\n";
OS << " // If this operand is broken for all of the instances of this\n";
OS << " // mnemonic, keep track of it so we can report loc info.\n";