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[TableGen][AsmMatcherEmitter] Factor out AsmOperand creation. NFC.

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llvm-svn: 238534
This commit is contained in:
Ahmed Bougacha 2015-05-29 00:55:55 +00:00
parent a689d2cb58
commit 4384b4c7a8
1 changed files with 15 additions and 8 deletions
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23
utils/TableGen/AsmMatcherEmitter.cpp
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@ -572,6 +572,7 @@ struct MatchableInfo {
private:
void tokenizeAsmString(const AsmMatcherInfo &Info);
void addAsmOperand(size_t Start, size_t End);
};
/// SubtargetFeatureInfo - Helper class for storing information on a subtarget
@ -811,6 +812,12 @@ void MatchableInfo::initialize(const AsmMatcherInfo &Info,
DepMask ? !DepMask->getValue()->getAsUnquotedString().empty() : false;
}
/// Append an AsmOperand for the given substring of AsmString.
void MatchableInfo::addAsmOperand(size_t Start, size_t End) {
StringRef String = AsmString;
AsmOperands.push_back(AsmOperand(String.slice(Start, End)));
}
/// tokenizeAsmString - Tokenize a simplified assembly string.
void MatchableInfo::tokenizeAsmString(const AsmMatcherInfo &Info) {
StringRef String = AsmString;
@ -826,28 +833,28 @@ void MatchableInfo::tokenizeAsmString(const AsmMatcherInfo &Info) {
case '\t':
case ',':
if (InTok) {
AsmOperands.push_back(AsmOperand(String.slice(Prev, i)));
addAsmOperand(Prev, i);
InTok = false;
}
if (!isspace(String[i]) && String[i] != ',')
AsmOperands.push_back(AsmOperand(String.substr(i, 1)));
addAsmOperand(i, i + 1);
Prev = i + 1;
break;
case '\\':
if (InTok) {
AsmOperands.push_back(AsmOperand(String.slice(Prev, i)));
addAsmOperand(Prev, i);
InTok = false;
}
++i;
assert(i != String.size() && "Invalid quoted character");
AsmOperands.push_back(AsmOperand(String.substr(i, 1)));
addAsmOperand(i, i + 1);
Prev = i + 1;
break;
case '$': {
if (InTok) {
AsmOperands.push_back(AsmOperand(String.slice(Prev, i)));
addAsmOperand(Prev, i);
InTok = false;
}
@ -860,7 +867,7 @@ void MatchableInfo::tokenizeAsmString(const AsmMatcherInfo &Info) {
StringRef::iterator End = std::find(String.begin() + i, String.end(),'}');
assert(End != String.end() && "Missing brace in operand reference!");
size_t EndPos = End - String.begin();
AsmOperands.push_back(AsmOperand(String.slice(i, EndPos+1)));
addAsmOperand(i, EndPos+1);
Prev = EndPos + 1;
i = EndPos;
break;
@ -869,7 +876,7 @@ void MatchableInfo::tokenizeAsmString(const AsmMatcherInfo &Info) {
case '.':
if (!Info.AsmParser->getValueAsBit("MnemonicContainsDot")) {
if (InTok)
AsmOperands.push_back(AsmOperand(String.slice(Prev, i)));
addAsmOperand(Prev, i);
Prev = i;
}
InTok = true;
@ -880,7 +887,7 @@ void MatchableInfo::tokenizeAsmString(const AsmMatcherInfo &Info) {
}
}
if (InTok && Prev != String.size())
AsmOperands.push_back(AsmOperand(String.substr(Prev)));
addAsmOperand(Prev, StringRef::npos);
// The first token of the instruction is the mnemonic, which must be a
// simple string, not a $foo variable or a singleton register.