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[TableGen] AsmMatcherEmitter.cpp: replace a sequence of "if" to "switch" in emitValidateOperandClass. 

Differential Revision: http://reviews.llvm.org/D18394

llvm-svn: 265412
This commit is contained in:
Valery Pykhtin 2016-04-05 16:18:16 +00:00
parent 42991b3e5a
commit 020c29e2b7
1 changed files with 6 additions and 2 deletions
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8
llvm/utils/TableGen/AsmMatcherEmitter.cpp
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@ -2153,19 +2153,23 @@ static void emitValidateOperandClass(AsmMatcherInfo &Info,
// Check the user classes. We don't care what order since we're only
// actually matching against one of them.
OS << " switch (Kind) {\n"
" default: break;\n";
for (const auto &CI : Info.Classes) {
if (!CI.isUserClass())
continue;
OS << " // '" << CI.ClassName << "' class\n";
OS << " if (Kind == " << CI.Name << ") {\n";
OS << " case " << CI.Name << ":\n";
OS << " if (Operand." << CI.PredicateMethod << "())\n";
OS << " return MCTargetAsmParser::Match_Success;\n";
if (!CI.DiagnosticType.empty())
OS << " return " << Info.Target.getName() << "AsmParser::Match_"
<< CI.DiagnosticType << ";\n";
OS << " }\n\n";
else
OS << " break;\n";
}
OS << " } // end switch (Kind)\n\n";
// Check for register operands, including sub-classes.
OS << " if (Operand.isReg()) {\n";