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Initial submission for the attribute group feature.

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Attribute groups are of the form:

  #0 = attributes { noinline "no-sse" "cpu"="cortex-a8" alignstack=4 }

Target-dependent attributes are represented as strings. Attributes can have
optional values associated with them. E.g., the "cpu" attribute has the value
"cortex-a8".

Target-independent attributes are listed as enums inside the attribute classes.

Multiple attribute groups can be referenced by the same object. In that case,
the attributes are merged together.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174493 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling
2013-02-06 06:52:58 +00:00
parent 97fe3d9511
commit 95ce4c2ffb
6 changed files with 197 additions and 41 deletions
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60
lib/AsmParser/LLLexer.cpp
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@@ -226,6 +226,7 @@ lltok::Kind LLLexer::LexToken() {
SkipLineComment();
return LexToken();
case '!': return LexExclaim();
case '#': return LexHash();
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
case '-':
@@ -394,6 +395,24 @@ lltok::Kind LLLexer::LexExclaim() {
return lltok::exclaim;
}
/// LexHash - Lex all tokens that start with a # character:
/// AttrGrpID ::= #[0-9]+
lltok::Kind LLLexer::LexHash() {
// Handle AttrGrpID: #[0-9]+
if (isdigit(CurPtr[0])) {
for (++CurPtr; isdigit(CurPtr[0]); ++CurPtr)
/*empty*/;
uint64_t Val = atoull(TokStart+1, CurPtr);
if ((unsigned)Val != Val)
Error("invalid value number (too large)!");
UIntVal = unsigned(Val);
return lltok::AttrGrpID;
}
return lltok::Error;
}
/// LexIdentifier: Handle several related productions:
/// Label [-a-zA-Z$._0-9]+:
/// IntegerType i[0-9]+
@@ -531,35 +550,36 @@ lltok::Kind LLLexer::LexIdentifier() {
KEYWORD(cc);
KEYWORD(c);
KEYWORD(signext);
KEYWORD(zeroext);
KEYWORD(attributes);
KEYWORD(address_safety);
KEYWORD(alwaysinline);
KEYWORD(byval);
KEYWORD(inlinehint);
KEYWORD(inreg);
KEYWORD(sret);
KEYWORD(nounwind);
KEYWORD(noreturn);
KEYWORD(minsize);
KEYWORD(naked);
KEYWORD(nest);
KEYWORD(noalias);
KEYWORD(nocapture);
KEYWORD(byval);
KEYWORD(nest);
KEYWORD(noduplicate);
KEYWORD(noimplicitfloat);
KEYWORD(noinline);
KEYWORD(nonlazybind);
KEYWORD(noredzone);
KEYWORD(noreturn);
KEYWORD(nounwind);
KEYWORD(optsize);
KEYWORD(readnone);
KEYWORD(readonly);
KEYWORD(uwtable);
KEYWORD(returns_twice);
KEYWORD(inlinehint);
KEYWORD(noinline);
KEYWORD(alwaysinline);
KEYWORD(optsize);
KEYWORD(signext);
KEYWORD(sret);
KEYWORD(ssp);
KEYWORD(sspreq);
KEYWORD(sspstrong);
KEYWORD(noredzone);
KEYWORD(noimplicitfloat);
KEYWORD(naked);
KEYWORD(nonlazybind);
KEYWORD(address_safety);
KEYWORD(minsize);
KEYWORD(noduplicate);
KEYWORD(uwtable);
KEYWORD(zeroext);
KEYWORD(type);
KEYWORD(opaque);