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llvm-6502/tools/llvm-upgrade/UpgradeParser.y
Reid Spencer 280d801839 Handle upgrade of fp -> ptr cast with fp -> int -> ptr 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32109 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-01 23:40:53 +00:00

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//===-- UpgradeParser.y - Upgrade parser for llvm assmbly -------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the bison parser for LLVM 1.9 assembly language.
//
//===----------------------------------------------------------------------===//
%{
#include "ParserInternals.h"
#include <llvm/ADT/StringExtras.h>
#include <algorithm>
#include <list>
#include <utility>
#include <iostream>
#define YYERROR_VERBOSE 1
#define YYINCLUDED_STDLIB_H
#define YYDEBUG 1
int yylex(); // declaration" of xxx warnings.
int yyparse();
extern int yydebug;
static std::string CurFilename;
static std::ostream *O = 0;
std::istream* LexInput = 0;
unsigned SizeOfPointer = 32;
void UpgradeAssembly(const std::string &infile, std::istream& in,
std::ostream &out, bool debug)
{
Upgradelineno = 1;
CurFilename = infile;
LexInput = &in;
yydebug = debug;
O = &out;
if (yyparse()) {
std::cerr << "Parse failed.\n";
exit(1);
}
}
std::string getCastUpgrade(std::string& Source, TypeInfo& SrcTy,
TypeInfo&DstTy, bool isConst = false)
{
std::string Result;
if (SrcTy.isFloatingPoint() && DstTy.isPointer()) {
if (isConst)
Source = "ulong fptoui(" + Source + " to ulong)";
else {
Result = "%cast_upgrade = fptoui " + Source + " to ulong";
Source = "ulong %cast_upgrade";
}
SrcTy.destroy();
SrcTy.newTy = new std::string("ulong");
SrcTy.oldTy = ULongTy;
}
return Result;
}
const char* getCastOpcode(std::string& Source, TypeInfo& SrcTy,
TypeInfo&DstTy) {
unsigned SrcBits = SrcTy.getBitWidth();
unsigned DstBits = DstTy.getBitWidth();
const char* opcode = "bitcast";
// Run through the possibilities ...
if (DstTy.isIntegral()) { // Casting to integral
if (SrcTy.isIntegral()) { // Casting from integral
if (DstBits < SrcBits)
opcode = "trunc";
else if (DstBits > SrcBits) { // its an extension
if (SrcTy.isSigned())
opcode ="sext"; // signed -> SEXT
else
opcode = "zext"; // unsigned -> ZEXT
} else {
opcode = "bitcast"; // Same size, No-op cast
}
} else if (SrcTy.isFloatingPoint()) { // Casting from floating pt
if (DstTy.isSigned())
opcode = "fptosi"; // FP -> sint
else
opcode = "fptoui"; // FP -> uint
} else if (SrcTy.isPacked()) {
assert(DstBits == SrcTy.getBitWidth() &&
"Casting packed to integer of different width");
opcode = "bitcast"; // same size, no-op cast
} else {
assert(SrcTy.isPointer() &&
"Casting from a value that is not first-class type");
opcode = "ptrtoint"; // ptr -> int
}
} else if (DstTy.isFloatingPoint()) { // Casting to floating pt
if (SrcTy.isIntegral()) { // Casting from integral
if (SrcTy.isSigned())
opcode = "sitofp"; // sint -> FP
else
opcode = "uitofp"; // uint -> FP
} else if (SrcTy.isFloatingPoint()) { // Casting from floating pt
if (DstBits < SrcBits) {
opcode = "fptrunc"; // FP -> smaller FP
} else if (DstBits > SrcBits) {
opcode = "fpext"; // FP -> larger FP
} else {
opcode ="bitcast"; // same size, no-op cast
}
} else if (SrcTy.isPacked()) {
assert(DstBits == SrcTy.getBitWidth() &&
"Casting packed to floating point of different width");
opcode = "bitcast"; // same size, no-op cast
} else {
assert(0 && "Casting pointer or non-first class to float");
}
} else if (DstTy.isPacked()) {
if (SrcTy.isPacked()) {
assert(DstTy.getBitWidth() == SrcTy.getBitWidth() &&
"Casting packed to packed of different widths");
opcode = "bitcast"; // packed -> packed
} else if (DstTy.getBitWidth() == SrcBits) {
opcode = "bitcast"; // float/int -> packed
} else {
assert(!"Illegal cast to packed (wrong type or size)");
}
} else if (DstTy.isPointer()) {
if (SrcTy.isPointer()) {
opcode = "bitcast"; // ptr -> ptr
} else if (SrcTy.isIntegral()) {
opcode = "inttoptr"; // int -> ptr
} else if (SrcTy.isFloatingPoint()) { // float/double -> ptr
// Cast to int first
*O << " %upgrade_cast = fptoui " << Source << " to ulong\n";
opcode = "inttoptr";
Source = "ulong %upgrade_cast";
} else {
assert(!"Casting pointer to other than pointer or int");
}
} else {
assert(!"Casting to type that is not first-class");
}
return opcode;
}
%}
%file-prefix="UpgradeParser"
%union {
std::string* String;
TypeInfo Type;
ValueInfo Value;
ConstInfo Const;
}
%token <Type> VOID BOOL SBYTE UBYTE SHORT USHORT INT UINT LONG ULONG
%token <Type> FLOAT DOUBLE LABEL OPAQUE
%token <String> ESINT64VAL EUINT64VAL SINTVAL UINTVAL FPVAL
%token <String> NULL_TOK UNDEF ZEROINITIALIZER TRUETOK FALSETOK
%token <String> TYPE VAR_ID LABELSTR STRINGCONSTANT
%token <String> IMPLEMENTATION BEGINTOK ENDTOK
%token <String> DECLARE GLOBAL CONSTANT SECTION VOLATILE
%token <String> TO DOTDOTDOT CONST INTERNAL LINKONCE WEAK
%token <String> DLLIMPORT DLLEXPORT EXTERN_WEAK APPENDING
%token <String> NOT EXTERNAL TARGET TRIPLE ENDIAN POINTERSIZE LITTLE BIG
%token <String> ALIGN
%token <String> DEPLIBS CALL TAIL ASM_TOK MODULE SIDEEFFECT
%token <String> CC_TOK CCC_TOK CSRETCC_TOK FASTCC_TOK COLDCC_TOK
%token <String> X86_STDCALLCC_TOK X86_FASTCALLCC_TOK
%token <String> DATALAYOUT
%token <String> RET BR SWITCH INVOKE UNWIND UNREACHABLE
%token <String> ADD SUB MUL UDIV SDIV FDIV UREM SREM FREM AND OR XOR
%token <String> SETLE SETGE SETLT SETGT SETEQ SETNE // Binary Comparators
%token <String> MALLOC ALLOCA FREE LOAD STORE GETELEMENTPTR
%token <String> PHI_TOK SELECT SHL SHR ASHR LSHR VAARG
%token <String> EXTRACTELEMENT INSERTELEMENT SHUFFLEVECTOR
%token <String> CAST TRUNC ZEXT SEXT FPTRUNC FPEXT FPTOUI FPTOSI UITOFP SITOFP
%token <String> PTRTOINT INTTOPTR BITCAST
%type <String> OptAssign OptLinkage OptCallingConv OptAlign OptCAlign
%type <String> SectionString OptSection GlobalVarAttributes GlobalVarAttribute
%type <String> ArgTypeListI ConstExpr DefinitionList
%type <String> ConstPool TargetDefinition LibrariesDefinition LibList OptName
%type <String> ArgVal ArgListH ArgList FunctionHeaderH BEGIN FunctionHeader END
%type <String> Function FunctionProto BasicBlock TypeListI
%type <String> InstructionList BBTerminatorInst JumpTable Inst PHIList
%type <String> ValueRefList OptTailCall InstVal IndexList OptVolatile
%type <String> MemoryInst SymbolicValueRef OptSideEffect GlobalType
%type <String> FnDeclareLinkage BasicBlockList BigOrLittle AsmBlock
%type <String> Name ValueRef ValueRefListE ConstValueRef
%type <String> ShiftOps SetCondOps LogicalOps ArithmeticOps CastOps
%type <String> ConstVector
%type <Type> IntType SIntType UIntType FPType TypesV Types
%type <Type> PrimType UpRTypesV UpRTypes
%type <String> IntVal EInt64Val
%type <Const> ConstVal
%type <Value> ResolvedVal
%start Module
%%
// Handle constant integer size restriction and conversion...
IntVal : SINTVAL | UINTVAL ;
EInt64Val : ESINT64VAL | EUINT64VAL;
// Operations that are notably excluded from this list include:
// RET, BR, & SWITCH because they end basic blocks and are treated specially.
ArithmeticOps: ADD | SUB | MUL | UDIV | SDIV | FDIV | UREM | SREM | FREM;
LogicalOps : AND | OR | XOR;
SetCondOps : SETLE | SETGE | SETLT | SETGT | SETEQ | SETNE;
ShiftOps : SHL | SHR | ASHR | LSHR;
CastOps : TRUNC | ZEXT | SEXT | FPTRUNC | FPEXT | FPTOUI | FPTOSI |
UITOFP | SITOFP | PTRTOINT | INTTOPTR | BITCAST | CAST
;
// These are some types that allow classification if we only want a particular
// thing... for example, only a signed, unsigned, or integral type.
SIntType : LONG | INT | SHORT | SBYTE;
UIntType : ULONG | UINT | USHORT | UBYTE;
IntType : SIntType | UIntType;
FPType : FLOAT | DOUBLE;
// OptAssign - Value producing statements have an optional assignment component
OptAssign : Name '=' {
*$1 += " = ";
$$ = $1;
}
| /*empty*/ {
$$ = new std::string("");
};
OptLinkage
: INTERNAL | LINKONCE | WEAK | APPENDING | DLLIMPORT | DLLEXPORT
| EXTERN_WEAK
| /*empty*/ { $$ = new std::string(""); } ;
OptCallingConv
: CCC_TOK | CSRETCC_TOK | FASTCC_TOK | COLDCC_TOK | X86_STDCALLCC_TOK
| X86_FASTCALLCC_TOK
| CC_TOK EUINT64VAL {
*$1 += *$2;
delete $2;
$$ = $1;
}
| /*empty*/ { $$ = new std::string(""); } ;
// OptAlign/OptCAlign - An optional alignment, and an optional alignment with
// a comma before it.
OptAlign
: /*empty*/ { $$ = new std::string(); }
| ALIGN EUINT64VAL { *$1 += " " + *$2; delete $2; $$ = $1; };
;
OptCAlign
: /*empty*/ { $$ = new std::string(); }
| ',' ALIGN EUINT64VAL {
$2->insert(0, ", ");
*$2 += " " + *$3;
delete $3;
$$ = $2;
};
SectionString
: SECTION STRINGCONSTANT {
*$1 += " " + *$2;
delete $2;
$$ = $1;
};
OptSection : /*empty*/ { $$ = new std::string(); }
| SectionString;
GlobalVarAttributes
: /* empty */ { $$ = new std::string(); }
| ',' GlobalVarAttribute GlobalVarAttributes {
$2->insert(0, ", ");
if (!$3->empty())
*$2 += " " + *$3;
delete $3;
$$ = $2;
};
GlobalVarAttribute
: SectionString
| ALIGN EUINT64VAL {
*$1 += " " + *$2;
delete $2;
$$ = $1;
};
//===----------------------------------------------------------------------===//
// Types includes all predefined types... except void, because it can only be
// used in specific contexts (function returning void for example). To have
// access to it, a user must explicitly use TypesV.
//
// TypesV includes all of 'Types', but it also includes the void type.
TypesV : Types | VOID ;
UpRTypesV : UpRTypes | VOID ;
Types : UpRTypes ;
// Derived types are added later...
//
PrimType : BOOL | SBYTE | UBYTE | SHORT | USHORT | INT | UINT ;
PrimType : LONG | ULONG | FLOAT | DOUBLE | LABEL;
UpRTypes : OPAQUE | PrimType
| SymbolicValueRef {
$$.newTy = $1; $$.oldTy = OpaqueTy;
};
// Include derived types in the Types production.
//
UpRTypes : '\\' EUINT64VAL { // Type UpReference
$2->insert(0, "\\");
$$.newTy = $2;
$$.oldTy = OpaqueTy;
}
| UpRTypesV '(' ArgTypeListI ')' { // Function derived type?
*$1.newTy += "( " + *$3 + " )";
delete $3;
$$.newTy = $1.newTy;
$$.oldTy = FunctionTy;
}
| '[' EUINT64VAL 'x' UpRTypes ']' { // Sized array type?
$2->insert(0,"[ ");
*$2 += " x " + *$4.newTy + " ]";
delete $4.newTy;
$$.newTy = $2;
$$.oldTy = ArrayTy;
}
| '<' EUINT64VAL 'x' UpRTypes '>' { // Packed array type?
$2->insert(0,"< ");
*$2 += " x " + *$4.newTy + " >";
delete $4.newTy;
$$.newTy = $2;
$$.oldTy = PackedTy;
}
| '{' TypeListI '}' { // Structure type?
$2->insert(0, "{ ");
*$2 += " }";
$$.newTy = $2;
$$.oldTy = StructTy;
}
| '{' '}' { // Empty structure type?
$$.newTy = new std::string("{}");
$$.oldTy = StructTy;
}
| UpRTypes '*' { // Pointer type?
*$1.newTy += '*';
$1.oldTy = PointerTy;
$$ = $1;
};
// TypeList - Used for struct declarations and as a basis for function type
// declaration type lists
//
TypeListI
: UpRTypes {
$$ = $1.newTy;
}
| TypeListI ',' UpRTypes {
*$1 += ", " + *$3.newTy;
delete $3.newTy;
$$ = $1;
};
// ArgTypeList - List of types for a function type declaration...
ArgTypeListI
: TypeListI
| TypeListI ',' DOTDOTDOT {
*$1 += ", ...";
delete $3;
$$ = $1;
}
| DOTDOTDOT {
$$ = $1;
}
| /*empty*/ {
$$ = new std::string();
};
// ConstVal - The various declarations that go into the constant pool. This
// production is used ONLY to represent constants that show up AFTER a 'const',
// 'constant' or 'global' token at global scope. Constants that can be inlined
// into other expressions (such as integers and constexprs) are handled by the
// ResolvedVal, ValueRef and ConstValueRef productions.
//
ConstVal: Types '[' ConstVector ']' { // Nonempty unsized arr
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += " [ " + *$3 + " ]";
delete $3;
}
| Types '[' ']' {
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += "[ ]";
}
| Types 'c' STRINGCONSTANT {
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += " c" + *$3;
delete $3;
}
| Types '<' ConstVector '>' { // Nonempty unsized arr
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += " < " + *$3 + " >";
delete $3;
}
| Types '{' ConstVector '}' {
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += " { " + *$3 + " }";
delete $3;
}
| Types '{' '}' {
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += " {}";
}
| Types NULL_TOK {
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += " " + *$2;
delete $2;
}
| Types UNDEF {
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += " " + *$2;
delete $2;
}
| Types SymbolicValueRef {
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += " " + *$2;
delete $2;
}
| Types ConstExpr {
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += " " + *$2;
delete $2;
}
| Types ZEROINITIALIZER {
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += " " + *$2;
delete $2;
}
| SIntType EInt64Val { // integral constants
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += " " + *$2;
delete $2;
}
| UIntType EUINT64VAL { // integral constants
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += " " + *$2;
delete $2;
}
| BOOL TRUETOK { // Boolean constants
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += " " + *$2;
delete $2;
}
| BOOL FALSETOK { // Boolean constants
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += " " + *$2;
delete $2;
}
| FPType FPVAL { // Float & Double constants
$$.type = $1;
$$.cnst = new std::string(*$1.newTy);
*$$.cnst += " " + *$2;
delete $2;
};
ConstExpr: CastOps '(' ConstVal TO Types ')' {
// We must infer the cast opcode from the types of the operands.
const char *opcode = $1->c_str();
std::string source = *$3.cnst;
if (*$1 == "cast") {
std::string upgrade = getCastUpgrade(source, $3.type, $5, true);
opcode = getCastOpcode(source, $3.type, $5);
if (!upgrade.empty())
source = upgrade;
}
$$ = new std::string(opcode);
*$$ += "( " + source + " " + *$4 + " " + *$5.newTy + ")";
delete $1; $3.destroy(); delete $4; $5.destroy();
}
| GETELEMENTPTR '(' ConstVal IndexList ')' {
*$1 += "(" + *$3.cnst + " " + *$4 + ")";
$$ = $1;
$3.destroy();
delete $4;
}
| SELECT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
*$1 += "(" + *$3.cnst + "," + *$5.cnst + "," + *$7.cnst + ")";
$3.destroy(); $5.destroy(); $7.destroy();
$$ = $1;
}
| ArithmeticOps '(' ConstVal ',' ConstVal ')' {
*$1 += "(" + *$3.cnst + "," + *$5.cnst + ")";
$3.destroy(); $5.destroy();
$$ = $1;
}
| LogicalOps '(' ConstVal ',' ConstVal ')' {
*$1 += "(" + *$3.cnst + "," + *$5.cnst + ")";
$3.destroy(); $5.destroy();
$$ = $1;
}
| SetCondOps '(' ConstVal ',' ConstVal ')' {
*$1 += "(" + *$3.cnst + "," + *$5.cnst + ")";
$3.destroy(); $5.destroy();
$$ = $1;
}
| ShiftOps '(' ConstVal ',' ConstVal ')' {
const char* shiftop = $1->c_str();
if (*$1 == "shr")
shiftop = ($3.type.isUnsigned()) ? "lshr" : "ashr";
$$ = new std::string(shiftop);
*$$ += "(" + *$3.cnst + "," + *$5.cnst + ")";
delete $1; $3.destroy(); $5.destroy();
}
| EXTRACTELEMENT '(' ConstVal ',' ConstVal ')' {
*$1 += "(" + *$3.cnst + "," + *$5.cnst + ")";
$3.destroy(); $5.destroy();
$$ = $1;
}
| INSERTELEMENT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
*$1 += "(" + *$3.cnst + "," + *$5.cnst + "," + *$7.cnst + ")";
$3.destroy(); $5.destroy(); $7.destroy();
$$ = $1;
}
| SHUFFLEVECTOR '(' ConstVal ',' ConstVal ',' ConstVal ')' {
*$1 += "(" + *$3.cnst + "," + *$5.cnst + "," + *$7.cnst + ")";
$3.destroy(); $5.destroy(); $7.destroy();
$$ = $1;
};
// ConstVector - A list of comma separated constants.
ConstVector
: ConstVector ',' ConstVal {
*$1 += ", " + *$3.cnst;
$3.destroy();
$$ = $1;
}
| ConstVal { $$ = new std::string(*$1.cnst); $1.destroy(); }
;
// GlobalType - Match either GLOBAL or CONSTANT for global declarations...
GlobalType : GLOBAL | CONSTANT ;
//===----------------------------------------------------------------------===//
// Rules to match Modules
//===----------------------------------------------------------------------===//
// Module rule: Capture the result of parsing the whole file into a result
// variable...
//
Module : DefinitionList {
};
// DefinitionList - Top level definitions
//
DefinitionList : DefinitionList Function {
$$ = 0;
}
| DefinitionList FunctionProto {
*O << *$2 << "\n";
delete $2;
$$ = 0;
}
| DefinitionList MODULE ASM_TOK AsmBlock {
*O << "module asm " << " " << *$4 << "\n";
$$ = 0;
}
| DefinitionList IMPLEMENTATION {
*O << "implementation\n";
$$ = 0;
}
| ConstPool;
// ConstPool - Constants with optional names assigned to them.
ConstPool : ConstPool OptAssign TYPE TypesV {
*O << *$2 << " " << *$3 << " " << *$4.newTy << "\n";
// delete $2; delete $3; $4.destroy();
$$ = 0;
}
| ConstPool FunctionProto { // Function prototypes can be in const pool
*O << *$2 << "\n";
delete $2;
$$ = 0;
}
| ConstPool MODULE ASM_TOK AsmBlock { // Asm blocks can be in the const pool
*O << *$2 << " " << *$3 << " " << *$4 << "\n";
delete $2; delete $3; delete $4;
$$ = 0;
}
| ConstPool OptAssign OptLinkage GlobalType ConstVal GlobalVarAttributes {
*O << *$2 << " " << *$3 << " " << *$4 << " " << *$5.cnst << " "
<< *$6 << "\n";
delete $2; delete $3; delete $4; $5.destroy(); delete $6;
$$ = 0;
}
| ConstPool OptAssign EXTERNAL GlobalType Types GlobalVarAttributes {
*O << *$2 << " " << *$3 << " " << *$4 << " " << *$5.newTy
<< " " << *$6 << "\n";
delete $2; delete $3; delete $4; $5.destroy(); delete $6;
$$ = 0;
}
| ConstPool OptAssign DLLIMPORT GlobalType Types GlobalVarAttributes {
*O << *$2 << " " << *$3 << " " << *$4 << " " << *$5.newTy
<< " " << *$6 << "\n";
delete $2; delete $3; delete $4; $5.destroy(); delete $6;
$$ = 0;
}
| ConstPool OptAssign EXTERN_WEAK GlobalType Types GlobalVarAttributes {
*O << *$2 << " " << *$3 << " " << *$4 << " " << *$5.newTy
<< " " << *$6 << "\n";
delete $2; delete $3; delete $4; $5.destroy(); delete $6;
$$ = 0;
}
| ConstPool TARGET TargetDefinition {
*O << *$2 << " " << *$3 << "\n";
delete $2; delete $3;
$$ = 0;
}
| ConstPool DEPLIBS '=' LibrariesDefinition {
*O << *$2 << " = " << *$4 << "\n";
delete $2; delete $4;
$$ = 0;
}
| /* empty: end of list */ {
$$ = 0;
};
AsmBlock : STRINGCONSTANT ;
BigOrLittle : BIG | LITTLE
TargetDefinition
: ENDIAN '=' BigOrLittle {
*$1 += " = " + *$3;
delete $3;
$$ = $1;
}
| POINTERSIZE '=' EUINT64VAL {
*$1 += " = " + *$3;
if (*$3 == "64")
SizeOfPointer = 64;
delete $3;
$$ = $1;
}
| TRIPLE '=' STRINGCONSTANT {
*$1 += " = " + *$3;
delete $3;
$$ = $1;
}
| DATALAYOUT '=' STRINGCONSTANT {
*$1 += " = " + *$3;
delete $3;
$$ = $1;
};
LibrariesDefinition
: '[' LibList ']' {
$2->insert(0, "[ ");
*$2 += " ]";
$$ = $2;
};
LibList
: LibList ',' STRINGCONSTANT {
*$1 += ", " + *$3;
delete $3;
$$ = $1;
}
| STRINGCONSTANT
| /* empty: end of list */ {
$$ = new std::string();
};
//===----------------------------------------------------------------------===//
// Rules to match Function Headers
//===----------------------------------------------------------------------===//
Name : VAR_ID | STRINGCONSTANT;
OptName : Name | /*empty*/ { $$ = new std::string(); };
ArgVal : Types OptName {
$$ = $1.newTy;
if (!$2->empty())
*$$ += " " + *$2;
delete $2;
};
ArgListH : ArgListH ',' ArgVal {
*$1 += ", " + *$3;
delete $3;
}
| ArgVal {
$$ = $1;
};
ArgList : ArgListH {
$$ = $1;
}
| ArgListH ',' DOTDOTDOT {
*$1 += ", ...";
$$ = $1;
delete $3;
}
| DOTDOTDOT {
$$ = $1;
}
| /* empty */ { $$ = new std::string(); };
FunctionHeaderH : OptCallingConv TypesV Name '(' ArgList ')'
OptSection OptAlign {
if (!$1->empty()) {
*$1 += " ";
}
*$1 += *$2.newTy + " " + *$3 + "(" + *$5 + ")";
if (!$7->empty()) {
*$1 += " " + *$7;
}
if (!$8->empty()) {
*$1 += " " + *$8;
}
$2.destroy();
delete $3;
delete $5;
delete $7;
delete $8;
$$ = $1;
};
BEGIN : BEGINTOK {
$$ = new std::string("begin");
}
| '{' {
$$ = new std::string ("{");
}
FunctionHeader : OptLinkage FunctionHeaderH BEGIN {
if (!$1->empty()) {
*O << *$1 << " ";
}
*O << *$2 << " " << *$3 << "\n";
delete $1; delete $2; delete $3;
$$ = 0;
};
END : ENDTOK { $$ = new std::string("end"); }
| '}' { $$ = new std::string("}"); };
Function : FunctionHeader BasicBlockList END {
if ($2)
*O << *$2;
*O << '\n' << *$3 << "\n";
$$ = 0;
};
FnDeclareLinkage
: /*default*/ { $$ = new std::string(); }
| DLLIMPORT
| EXTERN_WEAK
;
FunctionProto
: DECLARE FnDeclareLinkage FunctionHeaderH {
if (!$2->empty())
*$1 += " " + *$2;
*$1 += " " + *$3;
delete $2;
delete $3;
$$ = $1;
};
//===----------------------------------------------------------------------===//
// Rules to match Basic Blocks
//===----------------------------------------------------------------------===//
OptSideEffect : /* empty */ { $$ = new std::string(); }
| SIDEEFFECT;
ConstValueRef
: ESINT64VAL | EUINT64VAL | FPVAL | TRUETOK | FALSETOK | NULL_TOK | UNDEF
| ZEROINITIALIZER
| '<' ConstVector '>' {
$2->insert(0, "<");
*$2 += ">";
$$ = $2;
}
| ConstExpr
| ASM_TOK OptSideEffect STRINGCONSTANT ',' STRINGCONSTANT {
if (!$2->empty()) {
*$1 += " " + *$2;
}
*$1 += " " + *$3 + ", " + *$5;
delete $2; delete $3; delete $5;
$$ = $1;
};
SymbolicValueRef : IntVal | Name ;
// ValueRef - A reference to a definition... either constant or symbolic
ValueRef : SymbolicValueRef | ConstValueRef;
// ResolvedVal - a <type> <value> pair. This is used only in cases where the
// type immediately preceeds the value reference, and allows complex constant
// pool references (for things like: 'ret [2 x int] [ int 12, int 42]')
ResolvedVal : Types ValueRef {
$$.type = $1;
$$.val = new std::string(*$1.newTy + " ");
*$$.val += *$2;
delete $2;
};
BasicBlockList : BasicBlockList BasicBlock {
$$ = 0;
}
| BasicBlock { // Do not allow functions with 0 basic blocks
$$ = 0;
};
// Basic blocks are terminated by branching instructions:
// br, br/cc, switch, ret
//
BasicBlock : InstructionList BBTerminatorInst {
$$ = 0;
};
InstructionList : InstructionList Inst {
*O << " " << *$2 << "\n";
delete $2;
$$ = 0;
}
| /* empty */ {
$$ = 0;
}
| LABELSTR {
*O << *$1 << "\n";
delete $1;
$$ = 0;
};
BBTerminatorInst : RET ResolvedVal { // Return with a result...
*O << " " << *$1 << " " << *$2.val << "\n";
delete $1; $2.destroy();
$$ = 0;
}
| RET VOID { // Return with no result...
*O << " " << *$1 << " " << *$2.newTy << "\n";
delete $1; $2.destroy();
$$ = 0;
}
| BR LABEL ValueRef { // Unconditional Branch...
*O << " " << *$1 << " " << *$2.newTy << " " << *$3 << "\n";
delete $1; $2.destroy(); delete $3;
$$ = 0;
} // Conditional Branch...
| BR BOOL ValueRef ',' LABEL ValueRef ',' LABEL ValueRef {
*O << " " << *$1 << " " << *$2.newTy << " " << *$3 << ", "
<< *$5.newTy << " " << *$6 << ", " << *$8.newTy << " " << *$9 << "\n";
delete $1; $2.destroy(); delete $3; $5.destroy(); delete $6;
$8.destroy(); delete $9;
$$ = 0;
}
| SWITCH IntType ValueRef ',' LABEL ValueRef '[' JumpTable ']' {
*O << " " << *$1 << " " << *$2.newTy << " " << *$3 << ", " << *$5.newTy
<< " " << *$6 << " [" << *$8 << " ]\n";
delete $1; $2.destroy(); delete $3; $5.destroy(); delete $6; delete $8;
$$ = 0;
}
| SWITCH IntType ValueRef ',' LABEL ValueRef '[' ']' {
*O << " " << *$1 << " " << *$2.newTy << " " << *$3 << ", "
<< *$5.newTy << " " << *$6 << "[]\n";
delete $1; $2.destroy(); delete $3; $5.destroy(); delete $6;
$$ = 0;
}
| OptAssign INVOKE OptCallingConv TypesV ValueRef '(' ValueRefListE ')'
TO LABEL ValueRef UNWIND LABEL ValueRef {
*O << " ";
if (!$1->empty())
*O << *$1;
*O << *$2 << " " << *$3 << " " << *$4.newTy << " " << *$5 << " ("
<< *$7 << ") " << *$9 << " " << *$10.newTy << " " << *$11 << " "
<< *$12 << " " << *$13.newTy << " " << *$14 << "\n";
delete $1; delete $2; delete $3; $4.destroy(); delete $5; delete $7;
delete $9; $10.destroy(); delete $11; delete $12; $13.destroy();
delete $14;
$$ = 0;
}
| UNWIND {
*O << " " << *$1 << "\n";
delete $1;
$$ = 0;
}
| UNREACHABLE {
*O << " " << *$1 << "\n";
delete $1;
$$ = 0;
};
JumpTable : JumpTable IntType ConstValueRef ',' LABEL ValueRef {
*$1 += " " + *$2.newTy + " " + *$3 + ", " + *$5.newTy + " " + *$6;
$2.destroy(); delete $3; $5.destroy(); delete $6;
$$ = $1;
}
| IntType ConstValueRef ',' LABEL ValueRef {
$2->insert(0, *$1.newTy + " " );
*$2 += ", " + *$4.newTy + " " + *$5;
$1.destroy(); $4.destroy(); delete $5;
$$ = $2;
};
Inst
: OptAssign InstVal {
*$1 += *$2;
delete $2;
$$ = $1;
};
PHIList
: Types '[' ValueRef ',' ValueRef ']' { // Used for PHI nodes
$3->insert(0, *$1.newTy + "[");
*$3 += "," + *$5 + "]";
$1.destroy(); delete $5;
$$ = $3;
}
| PHIList ',' '[' ValueRef ',' ValueRef ']' {
*$1 += ", [" + *$4 + "," + *$6 + "]";
delete $4; delete $6;
$$ = $1;
};
ValueRefList
: ResolvedVal { $$ = new std::string(*$1.val); $1.destroy(); }
| ValueRefList ',' ResolvedVal {
*$1 += ", " + *$3.val;
$3.destroy();
$$ = $1;
};
// ValueRefListE - Just like ValueRefList, except that it may also be empty!
ValueRefListE
: ValueRefList
| /*empty*/ { $$ = new std::string(); }
;
OptTailCall
: TAIL CALL {
*$1 += " " + *$2;
delete $2;
$$ = $1;
}
| CALL
;
InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
*$1 += " " + *$2.newTy + " " + *$3 + ", " + *$5;
$2.destroy(); delete $3; delete $5;
$$ = $1;
}
| LogicalOps Types ValueRef ',' ValueRef {
*$1 += " " + *$2.newTy + " " + *$3 + ", " + *$5;
$2.destroy(); delete $3; delete $5;
$$ = $1;
}
| SetCondOps Types ValueRef ',' ValueRef {
*$1 += " " + *$2.newTy + " " + *$3 + ", " + *$5;
$2.destroy(); delete $3; delete $5;
$$ = $1;
}
| NOT ResolvedVal {
*$1 += " " + *$2.val;
$2.destroy();
$$ = $1;
}
| ShiftOps ResolvedVal ',' ResolvedVal {
const char* shiftop = $1->c_str();
if (*$1 == "shr")
shiftop = ($2.type.isUnsigned()) ? "lshr" : "ashr";
$$ = new std::string(shiftop);
*$$ += " " + *$2.val + ", " + *$4.val;
delete $1; $2.destroy(); $4.destroy();
}
| CastOps ResolvedVal TO Types {
const char *opcode = $1->c_str();
std::string source = *$2.val;
if (*$1 == "cast") {
std::string upgrade = getCastUpgrade(source, $2.type, $4, false);
if (!upgrade.empty())
*O << " " << upgrade << "\n";
opcode = getCastOpcode(source, $2.type, $4);
}
$$ = new std::string(opcode);
*$$ += " " + source + " " + *$3 + " " + *$4.newTy;
delete $1; $2.destroy();
delete $3; $4.destroy();
}
| SELECT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
*$1 += " " + *$2.val + ", " + *$4.val + ", " + *$6.val;
$2.destroy(); $4.destroy(); $6.destroy();
$$ = $1;
}
| VAARG ResolvedVal ',' Types {
*$1 += " " + *$2.val + ", " + *$4.newTy;
$2.destroy(); $4.destroy();
$$ = $1;
}
| EXTRACTELEMENT ResolvedVal ',' ResolvedVal {
*$1 += " " + *$2.val + ", " + *$4.val;
$2.destroy(); $4.destroy();
$$ = $1;
}
| INSERTELEMENT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
*$1 += " " + *$2.val + ", " + *$4.val + ", " + *$6.val;
$2.destroy(); $4.destroy(); $6.destroy();
$$ = $1;
}
| SHUFFLEVECTOR ResolvedVal ',' ResolvedVal ',' ResolvedVal {
*$1 += " " + *$2.val + ", " + *$4.val + ", " + *$6.val;
$2.destroy(); $4.destroy(); $6.destroy();
$$ = $1;
}
| PHI_TOK PHIList {
*$1 += " " + *$2;
delete $2;
$$ = $1;
}
| OptTailCall OptCallingConv TypesV ValueRef '(' ValueRefListE ')' {
if (!$2->empty())
*$1 += " " + *$2;
if (!$1->empty())
*$1 += " ";
*$1 += *$3.newTy + " " + *$4 + "(" + *$6 + ")";
delete $2; $3.destroy(); delete $4; delete $6;
$$ = $1;
}
| MemoryInst ;
// IndexList - List of indices for GEP based instructions...
IndexList
: ',' ValueRefList {
$2->insert(0, ", ");
$$ = $2;
}
| /* empty */ { $$ = new std::string(); }
;
OptVolatile
: VOLATILE
| /* empty */ { $$ = new std::string(); }
;
MemoryInst : MALLOC Types OptCAlign {
*$1 += " " + *$2.newTy;
if (!$3->empty())
*$1 += " " + *$3;
$2.destroy(); delete $3;
$$ = $1;
}
| MALLOC Types ',' UINT ValueRef OptCAlign {
*$1 += " " + *$2.newTy + ", " + *$4.newTy + " " + *$5;
if (!$6->empty())
*$1 += " " + *$6;
$2.destroy(); $4.destroy(); delete $5; delete $6;
$$ = $1;
}
| ALLOCA Types OptCAlign {
*$1 += " " + *$2.newTy;
if (!$3->empty())
*$1 += " " + *$3;
$2.destroy(); delete $3;
$$ = $1;
}
| ALLOCA Types ',' UINT ValueRef OptCAlign {
*$1 += " " + *$2.newTy + ", " + *$4.newTy + " " + *$5;
if (!$6->empty())
*$1 += " " + *$6;
$2.destroy(); $4.destroy(); delete $5; delete $6;
$$ = $1;
}
| FREE ResolvedVal {
*$1 += " " + *$2.val;
$2.destroy();
$$ = $1;
}
| OptVolatile LOAD Types ValueRef {
if (!$1->empty())
*$1 += " ";
*$1 += *$2 + " " + *$3.newTy + " " + *$4;
delete $2; $3.destroy(); delete $4;
$$ = $1;
}
| OptVolatile STORE ResolvedVal ',' Types ValueRef {
if (!$1->empty())
*$1 += " ";
*$1 += *$2 + " " + *$3.val + ", " + *$5.newTy + " " + *$6;
delete $2; $3.destroy(); $5.destroy(); delete $6;
$$ = $1;
}
| GETELEMENTPTR Types ValueRef IndexList {
*$1 += *$2.newTy + " " + *$3 + " " + *$4;
$2.destroy(); delete $3; delete $4;
$$ = $1;
};
%%
int yyerror(const char *ErrorMsg) {
std::string where
= std::string((CurFilename == "-") ? std::string("<stdin>") : CurFilename)
+ ":" + llvm::utostr((unsigned) Upgradelineno) + ": ";
std::string errMsg = std::string(ErrorMsg) + "\n" + where + " while reading ";
if (yychar == YYEMPTY || yychar == 0)
errMsg += "end-of-file.";
else
errMsg += "token: '" + std::string(Upgradetext, Upgradeleng) + "'";
std::cerr << errMsg << '\n';
exit(1);
}
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