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16222c006d
llvm-6502/tools/llvm-upgrade/UpgradeParser.y
Reid Spencer 16222c006d For PR1070: 
Remove useless bitcasts by commenting them out.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32804 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-01 01:20:16 +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 <map>
#include <utility>
#include <iostream>
#include <cassert>
#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;
static uint64_t unique = 1;
// This bool controls whether attributes are ever added to function declarations
// definitions and calls.
static bool AddAttributes = false;
// This bool is used to communicate between the InstVal and Inst rules about
// whether or not a cast should be deleted. When the flag is set, InstVal has
// determined that the cast is a candidate. However, it can only be deleted if
// the value being casted is the same value name as the instruction. The Inst
// rule makes that comparison if the flag is set and comments out the
// instruction if they match.
static bool deleteUselessCastFlag = false;
static std::string* deleteUselessCastName = 0;
typedef std::vector<TypeInfo> TypeVector;
static TypeVector EnumeratedTypes;
typedef std::map<std::string,TypeInfo> TypeMap;
static TypeMap NamedTypes;
static TypeMap Globals;
void destroy(ValueList* VL) {
while (!VL->empty()) {
ValueInfo& VI = VL->back();
VI.destroy();
VL->pop_back();
}
delete VL;
}
void UpgradeAssembly(const std::string &infile, std::istream& in,
std::ostream &out, bool debug, bool addAttrs)
{
Upgradelineno = 1;
CurFilename = infile;
LexInput = &in;
yydebug = debug;
AddAttributes = addAttrs;
O = &out;
if (yyparse()) {
std::cerr << "Parse failed.\n";
exit(1);
}
}
static void ResolveType(TypeInfo& Ty) {
if (Ty.oldTy == UnresolvedTy) {
TypeMap::iterator I = NamedTypes.find(*Ty.newTy);
if (I != NamedTypes.end()) {
Ty.oldTy = I->second.oldTy;
Ty.elemTy = I->second.elemTy;
} else {
std::string msg("Can't resolve type: ");
msg += *Ty.newTy;
yyerror(msg.c_str());
}
} else if (Ty.oldTy == NumericTy) {
unsigned ref = atoi(&((Ty.newTy->c_str())[1])); // Skip the '\\'
if (ref < EnumeratedTypes.size()) {
Ty.oldTy = EnumeratedTypes[ref].oldTy;
Ty.elemTy = EnumeratedTypes[ref].elemTy;
} else {
std::string msg("Can't resolve type: ");
msg += *Ty.newTy;
yyerror(msg.c_str());
}
}
// otherwise its already resolved.
}
static const char* getCastOpcode(
std::string& Source, const TypeInfo& SrcTy, const 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 {
assert(!"Casting invalid type to pointer");
}
} else {
assert(!"Casting to type that is not first-class");
}
return opcode;
}
static std::string getCastUpgrade(
const std::string& Src, TypeInfo& SrcTy, TypeInfo& DstTy, bool isConst)
{
std::string Result;
std::string Source = Src;
if (SrcTy.isFloatingPoint() && DstTy.isPointer()) {
// fp -> ptr cast is no longer supported but we must upgrade this
// by doing a double cast: fp -> int -> ptr
if (isConst)
Source = "i64 fptoui(" + Source + " to i64)";
else {
*O << " %cast_upgrade" << unique << " = fptoui " << Source
<< " to i64\n";
Source = "i64 %cast_upgrade" + llvm::utostr(unique);
}
// Update the SrcTy for the getCastOpcode call below
SrcTy.destroy();
SrcTy.newTy = new std::string("i64");
SrcTy.oldTy = ULongTy;
} else if (DstTy.oldTy == BoolTy && SrcTy.oldTy != BoolTy) {
// cast ptr %x to bool was previously defined as setne ptr %x, null
// The ptrtoint semantic is to truncate, not compare so we must retain
// the original intent by replace the cast with a setne
const char* comparator = SrcTy.isPointer() ? ", null" :
(SrcTy.isFloatingPoint() ? ", 0.0" : ", 0");
const char* compareOp = SrcTy.isFloatingPoint() ? "fcmp one " : "icmp ne ";
if (isConst) {
Result = "(" + Source + comparator + ")";
Result = compareOp + Result;
} else
Result = compareOp + Source + comparator;
return Result; // skip cast processing below
}
ResolveType(SrcTy);
ResolveType(DstTy);
std::string Opcode(getCastOpcode(Source, SrcTy, DstTy));
if (isConst)
Result += Opcode + "( " + Source + " to " + *DstTy.newTy + ")";
else
Result += Opcode + " " + Source + " to " + *DstTy.newTy;
return Result;
}
const char* getDivRemOpcode(const std::string& opcode, const TypeInfo& TI) {
const char* op = opcode.c_str();
TypeInfo Ty = TI;
ResolveType(Ty);
if (Ty.isPacked())
Ty.oldTy = Ty.getElementType();
if (opcode == "div")
if (Ty.isFloatingPoint())
op = "fdiv";
else if (Ty.isUnsigned())
op = "udiv";
else if (Ty.isSigned())
op = "sdiv";
else
yyerror("Invalid type for div instruction");
else if (opcode == "rem")
if (Ty.isFloatingPoint())
op = "frem";
else if (Ty.isUnsigned())
op = "urem";
else if (Ty.isSigned())
op = "srem";
else
yyerror("Invalid type for rem instruction");
return op;
}
std::string
getCompareOp(const std::string& setcc, const TypeInfo& TI) {
assert(setcc.length() == 5);
char cc1 = setcc[3];
char cc2 = setcc[4];
assert(cc1 == 'e' || cc1 == 'n' || cc1 == 'l' || cc1 == 'g');
assert(cc2 == 'q' || cc2 == 'e' || cc2 == 'e' || cc2 == 't');
std::string result("xcmp xxx");
result[6] = cc1;
result[7] = cc2;
if (TI.isFloatingPoint()) {
result[0] = 'f';
result[5] = 'o';
if (cc1 == 'n')
result[5] = 'u'; // NE maps to unordered
else
result[5] = 'o'; // everything else maps to ordered
} else if (TI.isIntegral() || TI.isPointer()) {
result[0] = 'i';
if ((cc1 == 'e' && cc2 == 'q') || (cc1 == 'n' && cc2 == 'e'))
result.erase(5,1);
else if (TI.isSigned())
result[5] = 's';
else if (TI.isUnsigned() || TI.isPointer() || TI.isBool())
result[5] = 'u';
else
yyerror("Invalid integral type for setcc");
}
return result;
}
%}
// %file-prefix="UpgradeParser"
%union {
std::string* String;
TypeInfo Type;
ValueInfo Value;
ConstInfo Const;
ValueList* ValList;
}
%token <Type> VOID BOOL SBYTE UBYTE SHORT USHORT INT UINT LONG ULONG
%token <Type> FLOAT DOUBLE LABEL
%token <String> OPAQUE 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 UNINITIALIZED
%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 EXCEPT UNWIND UNREACHABLE
%token <String> ADD SUB MUL DIV UDIV SDIV FDIV REM UREM SREM FREM AND OR XOR
%token <String> SETLE SETGE SETLT SETGT SETEQ SETNE // Binary Comparators
%token <String> ICMP FCMP EQ NE SLT SGT SLE SGE OEQ ONE OLT OGT OLE OGE
%token <String> ORD UNO UEQ UNE ULT UGT ULE UGE
%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> OptTailCall InstVal OptVolatile Unwind
%type <String> MemoryInst SymbolicValueRef OptSideEffect GlobalType
%type <String> FnDeclareLinkage BasicBlockList BigOrLittle AsmBlock
%type <String> Name ConstValueRef ConstVector External
%type <String> ShiftOps SetCondOps LogicalOps ArithmeticOps CastOps
%type <String> IPredicates FPredicates
%type <ValList> ValueRefList ValueRefListE IndexList
%type <Type> IntType SIntType UIntType FPType TypesV Types
%type <Type> PrimType UpRTypesV UpRTypes
%type <String> IntVal EInt64Val
%type <Const> ConstVal
%type <Value> ValueRef 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 | DIV | UDIV | SDIV | FDIV
| REM | UREM | SREM | FREM;
LogicalOps : AND | OR | XOR;
SetCondOps : SETLE | SETGE | SETLT | SETGT | SETEQ | SETNE;
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 | TRUETOK | FALSETOK;
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 '=' {
$$ = $1;
}
| /*empty*/ {
$$ = 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 {
$$.newTy = $1;
$$.oldTy = OpaqueTy;
}
| SymbolicValueRef {
$$.newTy = $1;
$$.oldTy = UnresolvedTy;
}
| PrimType {
$$ = $1;
}
| '\\' EUINT64VAL { // Type UpReference
$2->insert(0, "\\");
$$.newTy = $2;
$$.oldTy = NumericTy;
}
| UpRTypesV '(' ArgTypeListI ')' { // Function derived type?
*$1.newTy += "( " + *$3 + " )";
delete $3;
$$.newTy = $1.newTy;
$$.oldTy = FunctionTy;
}
| '[' EUINT64VAL 'x' UpRTypes ']' { // Sized array type?
$2->insert(0,"[ ");
*$2 += " x " + *$4.newTy + " ]";
delete $4.newTy;
$$.newTy = $2;
$$.oldTy = ArrayTy;
$$.elemTy = $4.oldTy;
}
| '<' EUINT64VAL 'x' UpRTypes '>' { // Packed array type?
$2->insert(0,"< ");
*$2 += " x " + *$4.newTy + " >";
delete $4.newTy;
$$.newTy = $2;
$$.oldTy = PackedTy;
$$.elemTy = $4.oldTy;
}
| '{' TypeListI '}' { // Structure type?
$2->insert(0, "{ ");
*$2 += " }";
$$.newTy = $2;
$$.oldTy = StructTy;
}
| '{' '}' { // Empty structure type?
$$.newTy = new std::string("{}");
$$.oldTy = StructTy;
}
| '<' '{' TypeListI '}' '>' { // Packed Structure type?
$3->insert(0, "<{ ");
*$3 += " }>";
$$.newTy = $3;
$$.oldTy = StructTy;
}
| '<' '{' '}' '>' { // Empty packed structure type?
$$.newTy = new std::string("<{}>");
$$.oldTy = StructTy;
}
| UpRTypes '*' { // Pointer type?
*$1.newTy += '*';
$$.elemTy = $1.oldTy;
$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 ')' {
std::string source = *$3.cnst;
TypeInfo DstTy = $5;
ResolveType(DstTy);
if (*$1 == "cast") {
// Call getCastUpgrade to upgrade the old cast
$$ = new std::string(getCastUpgrade(source, $3.type, $5, true));
} else {
// Nothing to upgrade, just create the cast constant expr
$$ = new std::string(*$1);
*$$ += "( " + source + " to " + *$5.newTy + ")";
}
delete $1; $3.destroy(); delete $4; $5.destroy();
}
| GETELEMENTPTR '(' ConstVal IndexList ')' {
*$1 += "(" + *$3.cnst;
for (unsigned i = 0; i < $4->size(); ++i) {
ValueInfo& VI = (*$4)[i];
*$1 += ", " + *VI.val;
VI.destroy();
}
*$1 += ")";
$$ = $1;
$3.destroy();
delete $4;
}
| SELECT '(' ConstVal ',' ConstVal ',' ConstVal ')' {
*$1 += "(" + *$3.cnst + "," + *$5.cnst + "," + *$7.cnst + ")";
$3.destroy(); $5.destroy(); $7.destroy();
$$ = $1;
}
| ArithmeticOps '(' ConstVal ',' ConstVal ')' {
const char* op = getDivRemOpcode(*$1, $3.type);
$$ = new std::string(op);
*$$ += "(" + *$3.cnst + "," + *$5.cnst + ")";
delete $1; $3.destroy(); $5.destroy();
}
| LogicalOps '(' ConstVal ',' ConstVal ')' {
*$1 += "(" + *$3.cnst + "," + *$5.cnst + ")";
$3.destroy(); $5.destroy();
$$ = $1;
}
| SetCondOps '(' ConstVal ',' ConstVal ')' {
*$1 = getCompareOp(*$1, $3.type);
*$1 += "(" + *$3.cnst + "," + *$5.cnst + ")";
$3.destroy(); $5.destroy();
$$ = $1;
}
| ICMP IPredicates '(' ConstVal ',' ConstVal ')' {
*$1 += "(" + *$2 + "," + *$4.cnst + "," + *$6.cnst + ")";
delete $2; $4.destroy(); $6.destroy();
$$ = $1;
}
| FCMP FPredicates '(' ConstVal ',' ConstVal ')' {
*$1 += "(" + *$2 + "," + *$4.cnst + "," + *$6.cnst + ")";
delete $2; $4.destroy(); $6.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 { $$ = 0; }
External : EXTERNAL | UNINITIALIZED { $$ = $1; *$$ = "external"; }
// ConstPool - Constants with optional names assigned to them.
ConstPool : ConstPool OptAssign TYPE TypesV {
EnumeratedTypes.push_back($4);
if (!$2->empty()) {
NamedTypes[*$2].newTy = new std::string(*$4.newTy);
NamedTypes[*$2].oldTy = $4.oldTy;
NamedTypes[*$2].elemTy = $4.elemTy;
*O << *$2 << " = ";
}
*O << "type " << *$4.newTy << '\n';
delete $2; delete $3; $4.destroy();
$$ = 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 {
if (!$2->empty()) {
*O << *$2 << " = ";
Globals[*$2] = $5.type.clone();
}
*O << *$3 << ' ' << *$4 << ' ' << *$5.cnst << ' ' << *$6 << '\n';
delete $2; delete $3; delete $4; $5.destroy(); delete $6;
$$ = 0;
}
| ConstPool OptAssign External GlobalType Types GlobalVarAttributes {
if (!$2->empty()) {
*O << *$2 << " = ";
Globals[*$2] = $5.clone();
}
*O << *$3 << ' ' << *$4 << ' ' << *$5.newTy << ' ' << *$6 << '\n';
delete $2; delete $3; delete $4; $5.destroy(); delete $6;
$$ = 0;
}
| ConstPool OptAssign DLLIMPORT GlobalType Types GlobalVarAttributes {
if (!$2->empty()) {
*O << *$2 << " = ";
Globals[*$2] = $5.clone();
}
*O << *$3 << ' ' << *$4 << ' ' << *$5.newTy << ' ' << *$6 << '\n';
delete $2; delete $3; delete $4; $5.destroy(); delete $6;
$$ = 0;
}
| ConstPool OptAssign EXTERN_WEAK GlobalType Types GlobalVarAttributes {
if (!$2->empty()) {
*O << *$2 << " = ";
Globals[*$2] = $5.clone();
}
*O << *$3 << ' ' << *$4 << ' ' << *$5.newTy << ' ' << *$6 << '\n';
delete $2; delete $3; delete $4; $5.destroy(); delete $6;
$$ = 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("{"); delete $1; }
| '{' { $$ = new std::string ("{"); }
FunctionHeader
: OptLinkage FunctionHeaderH BEGIN {
*O << "define ";
if (!$1->empty()) {
*O << *$1 << ' ';
}
*O << *$2 << ' ' << *$3 << '\n';
delete $1; delete $2; delete $3;
$$ = 0;
}
;
END : ENDTOK { $$ = new std::string("}"); delete $1; }
| '}' { $$ = new std::string("}"); };
Function : FunctionHeader BasicBlockList END {
if ($2)
*O << *$2;
*O << *$3 << "\n\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 {
$$.val = $1;
$$.constant = false;
$$.type.newTy = 0;
$$.type.oldTy = UnresolvedTy;
}
| ConstValueRef {
$$.val = $1;
$$.constant = true;
$$.type.newTy = 0;
$$.type.oldTy = UnresolvedTy;
}
;
// 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 {
$$ = $2;
$$.type = $1;
$$.val->insert(0, *$1.newTy + " ");
};
BasicBlockList : BasicBlockList BasicBlock {
$$ = 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;
$$ = 0;
};
Unwind : UNWIND | EXCEPT { $$ = $1; *$$ = "unwind"; }
BBTerminatorInst : RET ResolvedVal { // Return with a result...
*O << " " << *$1 << ' ' << *$2.val << '\n';
delete $1; $2.destroy();
$$ = 0;
}
| RET VOID { // Return with no result...
*O << " " << *$1 << ' ' << *$2.newTy << '\n';
delete $1; $2.destroy();
$$ = 0;
}
| BR LABEL ValueRef { // Unconditional Branch...
*O << " " << *$1 << ' ' << *$2.newTy << ' ' << *$3.val << '\n';
delete $1; $2.destroy(); $3.destroy();
$$ = 0;
} // Conditional Branch...
| BR BOOL ValueRef ',' LABEL ValueRef ',' LABEL ValueRef {
*O << " " << *$1 << ' ' << *$2.newTy << ' ' << *$3.val << ", "
<< *$5.newTy << ' ' << *$6.val << ", " << *$8.newTy << ' '
<< *$9.val << '\n';
delete $1; $2.destroy(); $3.destroy(); $5.destroy(); $6.destroy();
$8.destroy(); $9.destroy();
$$ = 0;
}
| SWITCH IntType ValueRef ',' LABEL ValueRef '[' JumpTable ']' {
*O << " " << *$1 << ' ' << *$2.newTy << ' ' << *$3.val << ", "
<< *$5.newTy << ' ' << *$6.val << " [" << *$8 << " ]\n";
delete $1; $2.destroy(); $3.destroy(); $5.destroy(); $6.destroy();
delete $8;
$$ = 0;
}
| SWITCH IntType ValueRef ',' LABEL ValueRef '[' ']' {
*O << " " << *$1 << ' ' << *$2.newTy << ' ' << *$3.val << ", "
<< *$5.newTy << ' ' << *$6.val << "[]\n";
delete $1; $2.destroy(); $3.destroy(); $5.destroy(); $6.destroy();
$$ = 0;
}
| OptAssign INVOKE OptCallingConv TypesV ValueRef '(' ValueRefListE ')'
TO LABEL ValueRef Unwind LABEL ValueRef {
*O << " ";
if (!$1->empty())
*O << *$1 << " = ";
*O << *$2 << ' ' << *$3 << ' ' << *$4.newTy << ' ' << *$5.val << " (";
for (unsigned i = 0; i < $7->size(); ++i) {
ValueInfo& VI = (*$7)[i];
*O << *VI.val;
if (i+1 < $7->size())
*O << ", ";
VI.destroy();
}
*O << ") " << *$9 << ' ' << *$10.newTy << ' ' << *$11.val << ' '
<< *$12 << ' ' << *$13.newTy << ' ' << *$14.val << '\n';
delete $1; delete $2; delete $3; $4.destroy(); $5.destroy(); delete $7;
delete $9; $10.destroy(); $11.destroy(); delete $12; $13.destroy();
$14.destroy();
$$ = 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.val;
$2.destroy(); delete $3; $5.destroy(); $6.destroy();
$$ = $1;
}
| IntType ConstValueRef ',' LABEL ValueRef {
$2->insert(0, *$1.newTy + " " );
*$2 += ", " + *$4.newTy + " " + *$5.val;
$1.destroy(); $4.destroy(); $5.destroy();
$$ = $2;
};
Inst
: OptAssign InstVal {
if (!$1->empty()) {
if (deleteUselessCastFlag && *deleteUselessCastName == *$1) {
*$1 += " = ";
$1->insert(0, "; "); // don't actually delete it, just comment it out
delete deleteUselessCastName;
} else {
*$1 += " = ";
}
}
*$1 += *$2;
delete $2;
deleteUselessCastFlag = false;
$$ = $1;
};
PHIList
: Types '[' ValueRef ',' ValueRef ']' { // Used for PHI nodes
$3.val->insert(0, *$1.newTy + "[");
*$3.val += "," + *$5.val + "]";
$1.destroy(); $5.destroy();
$$ = new std::string(*$3.val);
$3.destroy();
}
| PHIList ',' '[' ValueRef ',' ValueRef ']' {
*$1 += ", [" + *$4.val + "," + *$6.val + "]";
$4.destroy(); $6.destroy();
$$ = $1;
};
ValueRefList
: ResolvedVal {
$$ = new ValueList();
$$->push_back($1);
}
| ValueRefList ',' ResolvedVal {
$1->push_back($3);
$$ = $1;
};
// ValueRefListE - Just like ValueRefList, except that it may also be empty!
ValueRefListE
: ValueRefList { $$ = $1; }
| /*empty*/ { $$ = new ValueList(); }
;
OptTailCall
: TAIL CALL {
*$1 += " " + *$2;
delete $2;
$$ = $1;
}
| CALL
;
InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
const char* op = getDivRemOpcode(*$1, $2);
$$ = new std::string(op);
*$$ += " " + *$2.newTy + " " + *$3.val + ", " + *$5.val;
delete $1; $2.destroy(); $3.destroy(); $5.destroy();
}
| LogicalOps Types ValueRef ',' ValueRef {
*$1 += " " + *$2.newTy + " " + *$3.val + ", " + *$5.val;
$2.destroy(); $3.destroy(); $5.destroy();
$$ = $1;
}
| SetCondOps Types ValueRef ',' ValueRef {
*$1 = getCompareOp(*$1, $2);
*$1 += " " + *$2.newTy + " " + *$3.val + ", " + *$5.val;
$2.destroy(); $3.destroy(); $5.destroy();
$$ = $1;
}
| ICMP IPredicates Types ValueRef ',' ValueRef {
*$1 += " " + *$2 + " " + *$3.newTy + " " + *$4.val + "," + *$6.val;
delete $2; $4.destroy(); $6.destroy();
$$ = $1;
}
| FCMP FPredicates Types ValueRef ',' ValueRef {
*$1 += " " + *$2 + " " + *$3.newTy + " " + *$4.val + "," + *$6.val;
delete $2; $4.destroy(); $6.destroy();
$$ = $1;
}
| NOT ResolvedVal {
*$1 += " " + *$2.val;
$2.destroy();
$$ = $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 {
std::string source = *$2.val;
TypeInfo SrcTy = $2.type;
TypeInfo DstTy = $4;
ResolveType(DstTy);
$$ = new std::string();
if (*$1 == "cast") {
*$$ += getCastUpgrade(source, SrcTy, DstTy, false);
} else {
*$$ += *$1 + " " + source + " to " + *DstTy.newTy;
}
// Check to see if this is a useless cast of a value to the same name
// and the same type. Such casts will probably cause redefinition errors
// when assembled and perform no code gen action so just remove them.
if (*$1 == "cast" || *$1 == "bitcast")
if ($2.type.isInteger() && $4.isInteger() &&
$2.type.getBitWidth() == $4.getBitWidth()) {
deleteUselessCastFlag = true; // Flag the "Inst" rule
deleteUselessCastName = new std::string(*$2.val); // save the name
size_t pos = deleteUselessCastName->find_first_of("%\"",0);
if (pos != std::string::npos) {
// remove the type portion before val
deleteUselessCastName->erase(0, pos);
}
}
delete $1; $2.destroy();
delete $3; $4.destroy();
}
| SELECT ResolvedVal ',' ResolvedVal ',' ResolvedVal {
*$1 += " " + *$2.val + ", " + *$4.val + ", " + *$6.val;
$2.destroy(); $4.destroy(); $6.destroy();
$$ = $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;
$$ = $1;
}
| OptTailCall OptCallingConv TypesV ValueRef '(' ValueRefListE ')' {
if (!$2->empty())
*$1 += " " + *$2;
if (!$1->empty())
*$1 += " ";
*$1 += *$3.newTy + " " + *$4.val + "(";
for (unsigned i = 0; i < $6->size(); ++i) {
ValueInfo& VI = (*$6)[i];
*$1 += *VI.val;
if (i+1 < $6->size())
*$1 += ", ";
VI.destroy();
}
*$1 += ")";
delete $2; $3.destroy(); $4.destroy(); delete $6;
$$ = $1;
}
| MemoryInst ;
// IndexList - List of indices for GEP based instructions...
IndexList
: ',' ValueRefList { $$ = $2; }
| /* empty */ { $$ = new ValueList(); }
;
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.val;
if (!$6->empty())
*$1 += " " + *$6;
$2.destroy(); $4.destroy(); $5.destroy(); 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.val;
if (!$6->empty())
*$1 += " " + *$6;
$2.destroy(); $4.destroy(); $5.destroy(); delete $6;
$$ = $1;
}
| FREE ResolvedVal {
*$1 += " " + *$2.val;
$2.destroy();
$$ = $1;
}
| OptVolatile LOAD Types ValueRef {
if (!$1->empty())
*$1 += " ";
*$1 += *$2 + " " + *$3.newTy + " " + *$4.val;
delete $2; $3.destroy(); $4.destroy();
$$ = $1;
}
| OptVolatile STORE ResolvedVal ',' Types ValueRef {
if (!$1->empty())
*$1 += " ";
*$1 += *$2 + " " + *$3.val + ", " + *$5.newTy + " " + *$6.val;
delete $2; $3.destroy(); $5.destroy(); $6.destroy();
$$ = $1;
}
| GETELEMENTPTR Types ValueRef IndexList {
// Upgrade the indices
for (unsigned i = 0; i < $4->size(); ++i) {
ValueInfo& VI = (*$4)[i];
if (VI.type.isUnsigned() && !VI.isConstant() &&
VI.type.getBitWidth() < 64) {
std::string* old = VI.val;
*O << " %gep_upgrade" << unique << " = zext " << *old
<< " to i64\n";
VI.val = new std::string("i64 %gep_upgrade" + llvm::utostr(unique++));
VI.type.oldTy = ULongTy;
delete old;
}
}
*$1 += " " + *$2.newTy + " " + *$3.val;
for (unsigned i = 0; i < $4->size(); ++i) {
ValueInfo& VI = (*$4)[i];
*$1 += ", " + *VI.val;
VI.destroy();
}
$2.destroy(); $3.destroy(); 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 << "llvm-upgrade: " << errMsg << '\n';
exit(1);
}
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