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(*
polygen grammar for LLVM assembly language.
This file defines an LLVM assembly language grammar for polygen,
which is a tool for generating random text based on a grammar.
It is strictly syntax-based, and makes no attempt to generate
IR that is semantically valid. Most of the IR produced doesn't
pass the Verifier.
TODO: Metadata, in all its forms
*)
I ::= "title: LLVM assembly language\n"
^ "status: experimental\n"
^ "audience: LLVM developers\n"
;
S ::= Module ;
(*
Define rules for non-keyword tokens. This is currently just a bunch
of hacks. They don't cover many valid forms of tokens, and they also
generate some invalid forms of tokens. The LLVM parser has custom
C++ code to lex these; custom C++ code for emitting them would be
convenient, but polygen doesn't support that.
*)
NonZeroDecimalDigit ::= 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 ;
DecimalDigit ::= 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 ;
DecimalDigitSeq ::= DecimalDigit [^ DecimalDigitSeq ];
HexDigit ::= 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
| a | b | c | d | e | f ;
HexDigitSeq ::= HexDigit [^ HexDigitSeq ];
StringChar ::= a | b | c | d | e | f | g | h | i | j | k | l | m
| n | o | p | q | r | s | t | u | v | w | x | y | z ;
StringConstantSeq ::= StringChar [^ StringConstantSeq ];
StringConstant ::= StringChar [^ StringConstantSeq ];
EUINT64VAL ::= NonZeroDecimalDigit [^ DecimalDigitSeq ];
ESINT64VAL ::= [ "-" ] ^ EUINT64VAL ;
EUAPINTVAL ::= EUINT64VAL ;
ESAPINTVAL ::= ESINT64VAL ;
LOCALVALID ::= "%" ^ DecimalDigitSeq ;
GLOBALVALID ::= "@" ^ DecimalDigitSeq ;
INTTYPE ::= "i" ^ EUINT64VAL ;
GLOBALVAR ::= "@" ^ StringConstant ;
LOCALVAR ::= "%" ^ StringConstant ;
STRINGCONSTANT ::= "\"" ^ StringConstant ^ "\"" ;
ATSTRINGCONSTANT ::= "@" ^ STRINGCONSTANT ;
PCTSTRINGCONSTANT ::= "%" ^ STRINGCONSTANT ;
LABELSTR ::= StringConstant ;
FPVAL ::= ESAPINTVAL ^ "." ^ EUAPINTVAL | "0x" ^ HexDigitSeq ;
(*
The rest of this file is derived directly from llvmAsmParser.y.
*)
ArithmeticOps ::= + OptNW add | fadd | OptNW sub | fsub | OptNW mul | fmul |
udiv | OptExact sdiv | fdiv | urem | srem | frem ;
LogicalOps ::= shl | lshr | ashr | and | or | xor;
CastOps ::= trunc | zext | sext | fptrunc | fpext | bitcast |
uitofp | sitofp | fptoui | fptosi | inttoptr | ptrtoint ;
IPredicates ::= eq | ne | slt | sgt | sle | sge | ult | ugt | ule | uge ;
FPredicates ::= oeq | one | olt | ogt | ole | oge | ord | uno | ueq | une
| ult | ugt | ule | uge | true | false ;
IntType ::= INTTYPE;
FPType ::= float | double | "ppc_fp128" | fp128 | "x86_fp80";
LocalName ::= LOCALVAR | STRINGCONSTANT | PCTSTRINGCONSTANT ;
OptLocalName ::= LocalName | _ ;
OptAddrSpace ::= - addrspace ^ "(" ^ EUINT64VAL ^ ")" | _ ;
OptLocalAssign ::= LocalName "=" | _ ;
GlobalName ::= GLOBALVAR | ATSTRINGCONSTANT ;
OptGlobalAssign ::= GlobalAssign | _ ;
GlobalAssign ::= GlobalName "=" ;
GVInternalLinkage
::= + internal
| weak
| "weak_odr"
| linkonce
| "linkonce_odr"
| appending
| dllexport
| common
| private
| "linker_private"
| "linker_private_weak"
;
GVExternalLinkage
::= dllimport
| "extern_weak"
| + external
;
GVVisibilityStyle
::= + _
| default
| hidden
| protected
;
FunctionDeclareLinkage
::= + _
| dllimport
| "extern_weak"
;
FunctionDefineLinkage
::= + _
| internal
| linkonce
| "linkonce_odr"
| weak
| "weak_odr"
| dllexport
;
AliasLinkage ::= + _ | weak | "weak_odr" | internal ;
OptCallingConv ::= + _ |
ccc |
fastcc |
coldcc |
"x86_stdcallcc" |
"x86_fastcallcc" |
cc EUINT64VAL ;
ParamAttr ::= zeroext
| signext
| inreg
| sret
| noalias
| nocapture
| byval
| nest
| align EUINT64VAL
;
OptParamAttrs ::= + _ | OptParamAttrs ParamAttr ;
RetAttr ::= inreg
| zeroext
| signext
| noalias
;
OptRetAttrs ::= _
| OptRetAttrs RetAttr
;
FuncAttr ::= noreturn
| nounwind
| inreg
| zeroext
| signext
| readnone
| readonly
| inlinehint
| alignstack
| noinline
| alwaysinline
| optsize
| ssp
| sspreq
| returns_twice
| nonlazybind
| address_safety
;
OptFuncAttrs ::= + _ | OptFuncAttrs FuncAttr ;
OptGC ::= + _ | gc STRINGCONSTANT ;
OptAlign ::= + _ | align EUINT64VAL ;
OptCAlign ::= + _ | ^ "," align EUINT64VAL ;
SectionString ::= section STRINGCONSTANT ;
OptSection ::= + _ | SectionString ;
GlobalVarAttributes ::= + _ | ^ "," GlobalVarAttribute GlobalVarAttributes ;
GlobalVarAttribute ::= SectionString | align EUINT64VAL ;
PrimType ::= INTTYPE | float | double | "ppc_fp128" | fp128 | "x86_fp80"
| - label ;
Types
::= opaque
| PrimType
| Types OptAddrSpace ^ "*"
| SymbolicValueRef
| "\\" ^ EUINT64VAL
| Types "(" ^ ArgTypeListI ^ ")" OptFuncAttrs
| void "(" ^ ArgTypeListI ^ ")" OptFuncAttrs
| "[" ^ EUINT64VAL "x" Types ^ "]"
| "<" ^ EUINT64VAL "x" Types ^ ">"
| "{" TypeListI "}"
| "{" ^ "}"
| "<" ^ "{" TypeListI "}" ^ ">"
| "<" ^ "{" ^ "}" ^ ">"
;
ArgType ::= Types OptParamAttrs ;
ResultTypes ::= Types | void ;
ArgTypeList ::= ArgType | ArgTypeList ^ "," ArgType ;
ArgTypeListI ::= ArgTypeList | ArgTypeList ^ "," "..." | "..." | _ ;
TypeListI ::= Types | TypeListI ^ "," Types ;
ConstVal::= Types "[" ^ ConstVector ^ "]"
| Types "[" ^ "]"
| Types "c" ^ STRINGCONSTANT
| Types "<" ^ ConstVector ^ ">"
| Types "{" ConstVector "}"
| Types "{" ^ "}"
| Types "<" ^ "{" ConstVector "}" ^ ">"
| Types "<" ^ "{" ^ "}" ^ ">"
| Types null
| Types undef
| Types SymbolicValueRef
| Types ConstExpr
| Types zeroinitializer
| Types ESINT64VAL
| Types ESAPINTVAL
| Types EUINT64VAL
| Types EUAPINTVAL
| Types true
| Types false
| Types FPVAL ;
ConstExpr::= CastOps "(" ^ ConstVal to Types ^ ")"
| getelementptr OptInBounds "(" ^ ConstVal IndexList ^ ")"
| select "(" ^ ConstVal ^ "," ConstVal ^ "," ConstVal ^ ")"
| ArithmeticOps "(" ^ ConstVal ^ "," ConstVal ^ ")"
| LogicalOps "(" ^ ConstVal ^ "," ConstVal ^ ")"
| icmp IPredicates "(" ^ ConstVal ^ "," ConstVal ^ ")"
| fcmp FPredicates "(" ^ ConstVal ^ "," ConstVal ^ ")"
| extractelement "(" ^ ConstVal ^ "," ConstVal ^ ")"
| insertelement "(" ^ ConstVal ^ "," ConstVal ^ "," ConstVal ^ ")"
| shufflevector "(" ^ ConstVal ^ "," ConstVal ^ "," ConstVal ^ ")"
| extractvalue "(" ^ ConstVal ^ ConstantIndexList ^ ")"
| insertvalue "(" ^ ConstVal ^ "," ConstVal ^ ConstantIndexList ^ ")" ;
ConstVector ::= ConstVector ^ "," ConstVal | ConstVal ;
GlobalType ::= global | constant ;
ThreadLocal ::= - "thread_local" | _ ;
AliaseeRef ::= ResultTypes SymbolicValueRef
| bitcast "(" ^ AliaseeRef to Types ^ ")" ;
Module ::= +++ DefinitionList | --- _ ;
DefinitionList ::= - Definition | + DefinitionList Definition ;
Definition
::= ^ ( +++++ define Function
| declare FunctionProto
| - module asm AsmBlock
| OptLocalAssign type Types
| OptGlobalAssign GVVisibilityStyle ThreadLocal OptAddrSpace GlobalType
ConstVal GlobalVarAttributes
| OptGlobalAssign GVInternalLinkage GVVisibilityStyle ThreadLocal OptAddrSpace
GlobalType ConstVal GlobalVarAttributes
| OptGlobalAssign GVExternalLinkage GVVisibilityStyle ThreadLocal OptAddrSpace
GlobalType Types GlobalVarAttributes
| OptGlobalAssign GVVisibilityStyle alias AliasLinkage AliaseeRef
| target TargetDefinition
| deplibs "=" LibrariesDefinition
) ^ "\n";
AsmBlock ::= STRINGCONSTANT ;
TargetDefinition ::= triple "=" STRINGCONSTANT
| datalayout "=" STRINGCONSTANT ;
LibrariesDefinition ::= "[" ( LibList | _ ) "]";
LibList ::= LibList ^ "," STRINGCONSTANT | STRINGCONSTANT ;
ArgListH ::= ArgListH ^ "," Types OptParamAttrs OptLocalName
| Types OptParamAttrs OptLocalName ;
ArgList ::= ArgListH | ArgListH ^ "," "..." | "..." | _ ;
FunctionHeaderH ::= OptCallingConv OptRetAttrs ResultTypes
GlobalName ^ "(" ^ ArgList ^ ")"
OptFuncAttrs OptSection OptAlign OptGC ;
BEGIN ::= ( begin | "{" ) ^ "\n";
FunctionHeader ::=
FunctionDefineLinkage GVVisibilityStyle FunctionHeaderH BEGIN ;
END ::= ^ ( end | "}" ) ^ "\n";
Function ::= BasicBlockList END ;
FunctionProto ::= FunctionDeclareLinkage GVVisibilityStyle FunctionHeaderH ;
OptSideEffect ::= _ | sideeffect ;
ConstValueRef ::= ESINT64VAL
| EUINT64VAL
| FPVAL
| true
| false
| null
| undef
| zeroinitializer
| "<" ConstVector ">"
| "[" ConstVector "]"
| "[" ^ "]"
| "c" ^ STRINGCONSTANT
| "{" ConstVector "}"
| "{" ^ "}"
| "<" ^ "{" ConstVector "}" ^ ">"
| "<" ^ "{" ^ "}" ^ ">"
| ConstExpr
| asm OptSideEffect STRINGCONSTANT ^ "," STRINGCONSTANT ;
SymbolicValueRef ::= LOCALVALID
| GLOBALVALID
| LocalName
| GlobalName ;
ValueRef ::= SymbolicValueRef | ConstValueRef;
ResolvedVal ::= Types ValueRef ;
ReturnedVal ::= ResolvedVal | ReturnedVal ^ "," ResolvedVal ;
BasicBlockList ::= BasicBlockList BasicBlock | FunctionHeader BasicBlock ;
BasicBlock ::= InstructionList OptLocalAssign BBTerminatorInst ;
InstructionList ::= +++ InstructionList Inst
| - _
| ^ LABELSTR ^ ":\n" ;
BBTerminatorInst ::= ^ " " ^
( ret ReturnedVal
| ret void
| br label ValueRef
| br INTTYPE ValueRef ^ "," label ValueRef ^ "," label ValueRef
| switch IntType ValueRef ^ "," label ValueRef "[" JumpTable "]"
| switch IntType ValueRef ^ "," label ValueRef "[" ^ "]"
| invoke OptCallingConv ResultTypes ValueRef ^ "(" ^ ParamList ^ ")"
OptFuncAttrs
to label ValueRef unwind label ValueRef
| unwind
| unreachable ) ^ "\n";
JumpTable ::= JumpTable IntType ConstValueRef ^ "," label ValueRef
| IntType ConstValueRef ^ "," label ValueRef ;
Inst ::= ^ " " ^ OptLocalAssign InstVal ^ "\n";
PHIList ::= Types "[" ValueRef ^ "," ValueRef "]"
| PHIList ^ "," "[" ValueRef ^ "," ValueRef "]" ;
ParamList ::= Types OptParamAttrs ValueRef OptParamAttrs
| label OptParamAttrs ValueRef OptParamAttrs
| ParamList ^ "," Types OptParamAttrs ValueRef OptParamAttrs
| ParamList ^ "," label OptParamAttrs ValueRef OptParamAttrs
| - _ ;
IndexList ::= _ | IndexList ^ "," ResolvedVal ;
ConstantIndexList ::= "," EUINT64VAL | ConstantIndexList ^ "," EUINT64VAL ;
OptTailCall ::= tail call | call ;
InstVal ::=
ArithmeticOps Types ValueRef ^ "," ValueRef
| LogicalOps Types ValueRef ^ "," ValueRef
| icmp IPredicates Types ValueRef ^ "," ValueRef
| fcmp FPredicates Types ValueRef ^ "," ValueRef
| CastOps ResolvedVal to Types
| select ResolvedVal ^ "," ResolvedVal ^ "," ResolvedVal
| "va_arg" ResolvedVal ^ "," Types
| extractelement ResolvedVal ^ "," ResolvedVal
| insertelement ResolvedVal ^ "," ResolvedVal ^ "," ResolvedVal
| shufflevector ResolvedVal ^ "," ResolvedVal ^ "," ResolvedVal
| phi PHIList
| OptTailCall OptCallingConv ResultTypes ValueRef ^ "(" ^ ParamList ^ ")"
OptFuncAttrs
| MemoryInst ;
OptVolatile ::= - volatile | _ ;
OptExact ::= - exact | _ ;
OptNSW ::= - nsw | _ ;
OptNUW ::= - nuw | _ ;
OptNW ::= OptNUW OptNSW | OptNSW OptNUW ;
OptInBounds ::= - inbounds | _ ;
MemoryInst ::= malloc Types OptCAlign
| malloc Types ^ "," INTTYPE ValueRef OptCAlign
| alloca Types OptCAlign
| alloca Types ^ "," INTTYPE ValueRef OptCAlign
| free ResolvedVal
| OptVolatile load Types ValueRef OptCAlign
| OptVolatile store ResolvedVal ^ "," Types ValueRef OptCAlign
| getresult Types ValueRef ^ "," EUINT64VAL
| getelementptr OptInBounds Types ValueRef IndexList
| extractvalue Types ValueRef ^ ConstantIndexList
| insertvalue Types ValueRef ^ "," Types ValueRef ^ ConstantIndexList ;