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author | Bill Wendling <isanbard@gmail.com> | 2013-02-08 06:32:06 +0000 |
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committer | Bill Wendling <isanbard@gmail.com> | 2013-02-08 06:32:06 +0000 |
commit | baad55c3ab85d57003e9711084f1a95fcab76fdf (patch) | |
tree | 8c4d7be688f896b32d7c2f953e1343a150cc7e24 /lib/AsmParser | |
parent | 61b97b8c1721ba45e5c10ca307ceebe1efdf72a9 (diff) | |
download | external_llvm-baad55c3ab85d57003e9711084f1a95fcab76fdf.zip external_llvm-baad55c3ab85d57003e9711084f1a95fcab76fdf.tar.gz external_llvm-baad55c3ab85d57003e9711084f1a95fcab76fdf.tar.bz2 |
Parse the attribute group reference on a function.
Attribute references are of this form:
define void @foo() #0 #1 #2 { ... }
Parse them for function attributes. If there's more than one reference, then
they are merged together.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174697 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/AsmParser')
-rw-r--r-- | lib/AsmParser/LLParser.cpp | 95 | ||||
-rw-r--r-- | lib/AsmParser/LLParser.h | 7 |
2 files changed, 94 insertions, 8 deletions
diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp index ba3db34..6f076e2 100644 --- a/lib/AsmParser/LLParser.cpp +++ b/lib/AsmParser/LLParser.cpp @@ -65,6 +65,64 @@ bool LLParser::ValidateEndOfModule() { ForwardRefInstMetadata.clear(); } + // Handle any function attribute group forward references. + for (std::map<Value*, std::vector<unsigned> >::iterator + I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end(); + I != E; ++I) { + Value *V = I->first; + std::vector<unsigned> &Vec = I->second; + AttrBuilder B; + + for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end(); + VI != VE; ++VI) + B.merge(NumberedAttrBuilders[*VI]); + + if (Function *Fn = dyn_cast<Function>(V)) { + AttributeSet AS = Fn->getAttributes(); + AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex); + AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex, + AS.getFnAttributes()); + + FnAttrs.merge(B); + + // If the alignment was parsed as an attribute, move to the alignment + // field. + if (FnAttrs.hasAlignmentAttr()) { + Fn->setAlignment(FnAttrs.getAlignment()); + FnAttrs.removeAttribute(Attribute::Alignment); + } + + AS = AS.addAttributes(Context, AttributeSet::FunctionIndex, + AttributeSet::get(Context, + AttributeSet::FunctionIndex, + FnAttrs)); + Fn->setAttributes(AS); + } else if (CallInst *CI = dyn_cast<CallInst>(V)) { + AttributeSet AS = CI->getAttributes(); + AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex); + AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex, + AS.getFnAttributes()); + + AS = AS.addAttributes(Context, AttributeSet::FunctionIndex, + AttributeSet::get(Context, + AttributeSet::FunctionIndex, + FnAttrs)); + CI->setAttributes(AS); + } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) { + AttributeSet AS = II->getAttributes(); + AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex); + AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex, + AS.getFnAttributes()); + + AS = AS.addAttributes(Context, AttributeSet::FunctionIndex, + AttributeSet::get(Context, + AttributeSet::FunctionIndex, + FnAttrs)); + II->setAttributes(AS); + } else { + llvm_unreachable("invalid object with forward attribute group reference"); + } + } // If there are entries in ForwardRefBlockAddresses at this point, they are // references after the function was defined. Resolve those now. @@ -747,16 +805,17 @@ bool LLParser::ParseUnnamedAttrGrp() { assert(Lex.getKind() == lltok::AttrGrpID); LocTy AttrGrpLoc = Lex.getLoc(); unsigned VarID = Lex.getUIntVal(); + std::vector<unsigned> unused; Lex.Lex(); if (ParseToken(lltok::equal, "expected '=' here") || ParseToken(lltok::kw_attributes, "expected 'attributes' keyword here") || ParseToken(lltok::lbrace, "expected '{' here") || - ParseFnAttributeValuePairs(ForwardRefAttrBuilder[VarID], true) || + ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true) || ParseToken(lltok::rbrace, "expected end of attribute group")) return true; - if (!ForwardRefAttrBuilder[VarID].hasAttributes()) + if (!NumberedAttrBuilders[VarID].hasAttributes()) return Error(AttrGrpLoc, "attribute group has no attributes"); return false; @@ -764,7 +823,9 @@ bool LLParser::ParseUnnamedAttrGrp() { /// ParseFnAttributeValuePairs /// ::= <attr> | <attr> '=' <value> -bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B, bool inAttrGrp) { +bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B, + std::vector<unsigned> &FwdRefAttrGrps, + bool inAttrGrp) { bool HaveError = false; B.clear(); @@ -779,6 +840,22 @@ bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B, bool inAttrGrp) { // Finished. return false; + case lltok::AttrGrpID: { + // Allow a function to reference an attribute group: + // + // define void @foo() #1 { ... } + if (inAttrGrp) + HaveError |= + Error(Lex.getLoc(), + "cannot have an attribute group reference in an attribute group"); + + unsigned AttrGrpNum = Lex.getUIntVal(); + if (inAttrGrp) break; + + // Save the reference to the attribute group. We'll fill it in later. + FwdRefAttrGrps.push_back(AttrGrpNum); + break; + } // Target-dependent attributes: case lltok::StringConstant: { std::string Attr = Lex.getStrVal(); @@ -2856,6 +2933,7 @@ bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) { SmallVector<ArgInfo, 8> ArgList; bool isVarArg; AttrBuilder FuncAttrs; + std::vector<unsigned> FwdRefAttrGrps; std::string Section; unsigned Alignment; std::string GC; @@ -2865,7 +2943,7 @@ bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) { if (ParseArgumentList(ArgList, isVarArg) || ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr, &UnnamedAddrLoc) || - ParseFnAttributeValuePairs(FuncAttrs, false) || + ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false) || (EatIfPresent(lltok::kw_section) && ParseStringConstant(Section)) || ParseOptionalAlignment(Alignment) || @@ -2965,6 +3043,7 @@ bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) { Fn->setAlignment(Alignment); Fn->setSection(Section); if (!GC.empty()) Fn->setGC(GC.c_str()); + ForwardRefAttrGroups[Fn] = FwdRefAttrGrps; // Add all of the arguments we parsed to the function. Function::arg_iterator ArgIt = Fn->arg_begin(); @@ -3384,6 +3463,7 @@ bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) { bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) { LocTy CallLoc = Lex.getLoc(); AttrBuilder RetAttrs, FnAttrs; + std::vector<unsigned> FwdRefAttrGrps; CallingConv::ID CC; Type *RetType = 0; LocTy RetTypeLoc; @@ -3396,7 +3476,7 @@ bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) { ParseType(RetType, RetTypeLoc, true /*void allowed*/) || ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) || - ParseFnAttributeValuePairs(FnAttrs, false) || + ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false) || ParseToken(lltok::kw_to, "expected 'to' in invoke") || ParseTypeAndBasicBlock(NormalBB, PFS) || ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") || @@ -3471,6 +3551,7 @@ bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) { InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args); II->setCallingConv(CC); II->setAttributes(PAL); + ForwardRefAttrGroups[II] = FwdRefAttrGrps; Inst = II; return false; } @@ -3789,6 +3870,7 @@ bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) { bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS, bool isTail) { AttrBuilder RetAttrs, FnAttrs; + std::vector<unsigned> FwdRefAttrGrps; CallingConv::ID CC; Type *RetType = 0; LocTy RetTypeLoc; @@ -3802,7 +3884,7 @@ bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS, ParseType(RetType, RetTypeLoc, true /*void allowed*/) || ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) || - ParseFnAttributeValuePairs(FnAttrs, false)) + ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false)) return true; // If RetType is a non-function pointer type, then this is the short syntax @@ -3874,6 +3956,7 @@ bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS, CI->setTailCall(isTail); CI->setCallingConv(CC); CI->setAttributes(PAL); + ForwardRefAttrGroups[CI] = FwdRefAttrGrps; Inst = CI; return false; } diff --git a/lib/AsmParser/LLParser.h b/lib/AsmParser/LLParser.h index 3cc2a8d..42cdbd5 100644 --- a/lib/AsmParser/LLParser.h +++ b/lib/AsmParser/LLParser.h @@ -126,7 +126,8 @@ namespace llvm { ForwardRefBlockAddresses; // Attribute builder reference information. - std::map<unsigned, AttrBuilder> ForwardRefAttrBuilder; + std::map<Value*, std::vector<unsigned> > ForwardRefAttrGroups; + std::map<unsigned, AttrBuilder> NumberedAttrBuilders; public: LLParser(MemoryBuffer *F, SourceMgr &SM, SMDiagnostic &Err, Module *m) : @@ -239,7 +240,9 @@ namespace llvm { bool ParseMDNodeID(MDNode *&Result); bool ParseMDNodeID(MDNode *&Result, unsigned &SlotNo); bool ParseUnnamedAttrGrp(); - bool ParseFnAttributeValuePairs(AttrBuilder &B, bool inAttrGrp); + bool ParseFnAttributeValuePairs(AttrBuilder &B, + std::vector<unsigned> &FwdRefAttrGrps, + bool inAttrGrp); // Type Parsing. bool ParseType(Type *&Result, bool AllowVoid = false); |