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Added support for the Builtin attribute.

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The Builtin attribute is an attribute that can be placed on function call site that signal that even though a function is declared as being a builtin,

rdar://problem/13727199

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185049 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Gottesman
2013-06-27 00:25:01 +00:00
parent 9367c79e62
commit 2253a2f52f
15 changed files with 154 additions and 23 deletions
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25
lib/AsmParser/LLParser.cpp
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@@ -810,13 +810,13 @@ bool LLParser::ParseUnnamedAttrGrp() {
assert(Lex.getKind() == lltok::AttrGrpID);
unsigned VarID = Lex.getUIntVal();
std::vector<unsigned> unused;
LocTy NoBuiltinLoc;
LocTy BuiltinLoc;
Lex.Lex();
if (ParseToken(lltok::equal, "expected '=' here") ||
ParseToken(lltok::lbrace, "expected '{' here") ||
ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
NoBuiltinLoc) ||
BuiltinLoc) ||
ParseToken(lltok::rbrace, "expected end of attribute group"))
return true;
@@ -830,15 +830,15 @@ bool LLParser::ParseUnnamedAttrGrp() {
/// ::= <attr> | <attr> '=' <value>
bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
std::vector<unsigned> &FwdRefAttrGrps,
bool inAttrGrp, LocTy &NoBuiltinLoc) {
bool inAttrGrp, LocTy &BuiltinLoc) {
bool HaveError = false;
B.clear();
while (true) {
lltok::Kind Token = Lex.getKind();
if (Token == lltok::kw_nobuiltin)
NoBuiltinLoc = Lex.getLoc();
if (Token == lltok::kw_builtin)
BuiltinLoc = Lex.getLoc();
switch (Token) {
default:
if (!inAttrGrp) return HaveError;
@@ -909,6 +909,7 @@ bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
continue;
}
case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
@@ -1165,6 +1166,7 @@ bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
case lltok::kw_alignstack:
case lltok::kw_alwaysinline:
case lltok::kw_builtin:
case lltok::kw_inlinehint:
case lltok::kw_minsize:
case lltok::kw_naked:
@@ -1223,6 +1225,7 @@ bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
case lltok::kw_alignstack:
case lltok::kw_alwaysinline:
case lltok::kw_builtin:
case lltok::kw_cold:
case lltok::kw_inlinehint:
case lltok::kw_minsize:
@@ -2983,7 +2986,7 @@ bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
bool isVarArg;
AttrBuilder FuncAttrs;
std::vector<unsigned> FwdRefAttrGrps;
LocTy NoBuiltinLoc;
LocTy BuiltinLoc;
std::string Section;
unsigned Alignment;
std::string GC;
@@ -2994,7 +2997,7 @@ bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
&UnnamedAddrLoc) ||
ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
NoBuiltinLoc) ||
BuiltinLoc) ||
(EatIfPresent(lltok::kw_section) &&
ParseStringConstant(Section)) ||
ParseOptionalAlignment(Alignment) ||
@@ -3002,8 +3005,8 @@ bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
ParseStringConstant(GC)))
return true;
if (FuncAttrs.contains(Attribute::NoBuiltin))
return Error(NoBuiltinLoc, "'nobuiltin' attribute not valid on function");
if (FuncAttrs.contains(Attribute::Builtin))
return Error(BuiltinLoc, "'builtin' attribute not valid on function");
// If the alignment was parsed as an attribute, move to the alignment field.
if (FuncAttrs.hasAlignmentAttr()) {
@@ -3927,7 +3930,7 @@ bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
bool isTail) {
AttrBuilder RetAttrs, FnAttrs;
std::vector<unsigned> FwdRefAttrGrps;
LocTy NoBuiltinLoc;
LocTy BuiltinLoc;
CallingConv::ID CC;
Type *RetType = 0;
LocTy RetTypeLoc;
@@ -3942,7 +3945,7 @@ bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
ParseValID(CalleeID) ||
ParseParameterList(ArgList, PFS) ||
ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
NoBuiltinLoc))
BuiltinLoc))
return true;
// If RetType is a non-function pointer type, then this is the short syntax