mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 04:02:41 +01:00
341 lines
10 KiB
C++
341 lines
10 KiB
C++
%{ // -*- C++ -*-
|
|
Xinclude <stdio.h>
|
|
Xinclude <llvm/CodeGen/InstrForest.h>
|
|
|
|
typedef InstrTreeNode* NODEPTR_TYPE;
|
|
Xdefine OP_LABEL(p) ((p)->opLabel)
|
|
Xdefine LEFT_CHILD(p) ((p)->LeftChild)
|
|
Xdefine RIGHT_CHILD(p) ((p)->RightChild)
|
|
Xdefine STATE_LABEL(p) ((p)->state)
|
|
Xdefine PANIC printf
|
|
|
|
// Get definitions for various instruction values that we will need...
|
|
#define HANDLE_TERM_INST(N, OPC, CLASS) Ydefine OPC##OPCODE N
|
|
#define HANDLE_UNARY_INST(N, OPC, CLASS) Ydefine OPC##OPCODE N
|
|
#define HANDLE_BINARY_INST(N, OPC, CLASS) Ydefine OPC##OPCODE N
|
|
#define HANDLE_MEMORY_INST(N, OPC, CLASS) Ydefine OPC##OPCODE N
|
|
#define HANDLE_OTHER_INST(N, OPC, CLASS) Ydefine OPC##OPCODE N
|
|
|
|
#include "llvm/Instruction.def"
|
|
|
|
%}
|
|
|
|
%start stmt
|
|
|
|
%term Ret=RetOPCODE /* return void from a function */
|
|
%term RetValue=101 /* return a value from a function */
|
|
%term BrUncond=BrOPCODE
|
|
%term BrCond=102
|
|
%term Switch=SwitchOPCODE
|
|
/* 4 is unused */
|
|
%term Add=AddOPCODE
|
|
%term Sub=SubOPCODE
|
|
%term Mul=MulOPCODE
|
|
%term Div=DivOPCODE
|
|
%term Rem=RemOPCODE
|
|
%term And=AndOPCODE
|
|
%term Or=OrOPCODE
|
|
%term Xor=XorOPCODE
|
|
/* Use the next 4 to distinguish bitwise operators from
|
|
* logical operators. This is no longer used for Sparc,
|
|
* but may be useful for other target machines.
|
|
* The last one is the bitwise Not(val) == XOR val, 11..1.
|
|
* Note that it is also a binary operator, not unary.
|
|
*/
|
|
%term BAnd=111
|
|
%term BOr=112
|
|
%term BXor=113
|
|
%term BNot=213
|
|
/* The next one is the boolean Not(val) == bool XOR val, true
|
|
* Note that it is also a binary operator, not unary.
|
|
*/
|
|
%term Not=313
|
|
|
|
%term SetCC=114 /* use this to match all SetCC instructions */
|
|
/* %term SetEQ=13 */
|
|
/* %term SetNE=14 */
|
|
/* %term SetLE=15 */
|
|
/* %term SetGE=16 */
|
|
/* %term SetLT=17 */
|
|
/* %term SetGT=18 */
|
|
%term Malloc=MallocOPCODE
|
|
%term Free=FreeOPCODE
|
|
%term Alloca=AllocaOPCODE
|
|
%term AllocaN=122 /* alloca with arg N */
|
|
%term Load=LoadOPCODE
|
|
%term Store=StoreOPCODE
|
|
%term GetElemPtr=GetElementPtrOPCODE
|
|
%term GetElemPtrIdx=125 /* getElemPtr with index vector */
|
|
|
|
%term Phi=PHINodeOPCODE
|
|
|
|
%term Cast=CastOPCODE /* cast that will be ignored. others are made explicit */
|
|
%term ToBoolTy=127
|
|
%term ToUByteTy=128
|
|
%term ToSByteTy=129
|
|
%term ToUShortTy=130
|
|
%term ToShortTy=131
|
|
%term ToUIntTy=132
|
|
%term ToIntTy=133
|
|
%term ToULongTy=134
|
|
%term ToLongTy=135
|
|
%term ToFloatTy=136
|
|
%term ToDoubleTy=137
|
|
%term ToArrayTy=138
|
|
%term ToPointerTy=139
|
|
|
|
%term Call=CallOPCODE
|
|
%term Shl=ShlOPCODE
|
|
%term Shr=ShrOPCODE
|
|
%term VaArg=VarArgOPCODE
|
|
/* 32...46 are unused */
|
|
/*
|
|
* The foll. values should match the constants in InstrForest.h
|
|
*/
|
|
%term VRegList=97
|
|
%term VReg=98
|
|
%term Constant=99
|
|
%term Label=100
|
|
/* 50+i is a variant of i, as defined above */
|
|
|
|
|
|
%%
|
|
/*-----------------------------------------------------------------------*
|
|
* The productions of the grammar.
|
|
* Note that all chain rules are numbered 101 and above.
|
|
* Also, a special case of production X is numbered 100+X, 200+X, etc.
|
|
* The cost of a 1-cycle operation is represented as 10, to allow
|
|
* finer comparisons of costs (effectively, fractions of 1/10).
|
|
*-----------------------------------------------------------------------*/
|
|
|
|
/*
|
|
* The top-level statements
|
|
*/
|
|
stmt: Ret = 1 (30);
|
|
stmt: RetValue(reg) = 2 (30);
|
|
stmt: Store(reg,reg) = 3 (10);
|
|
stmt: Store(reg,ptrreg) = 4 (10);
|
|
stmt: BrUncond = 5 (20);
|
|
stmt: BrCond(setCC) = 6 (20); /* branch on cond. code */
|
|
stmt: BrCond(setCCconst) = 206 (10); /* may save one instruction */
|
|
stmt: BrCond(reg) = 8 (20); /* may avoid an extra instr */
|
|
stmt: BrCond(Constant) = 208 (20); /* may avoid an extra instr */
|
|
stmt: Switch(reg) = 9 (30); /* cost = load + branch */
|
|
|
|
stmt: reg = 111 (0);
|
|
|
|
/*
|
|
* List node used for nodes with more than 2 children
|
|
*/
|
|
reg: VRegList(reg,reg) = 10 (0);
|
|
|
|
/*
|
|
* Special case non-terminals to help combine unary instructions.
|
|
* Eg1: zdouble <- todouble(xfloat) * todouble(yfloat)
|
|
* Eg2: c <- a AND (NOT b).
|
|
* Note that the costs are counted for the special non-terminals here,
|
|
* and should not be counted again for the reg productions later.
|
|
*/
|
|
not: Not(reg,reg) = 21 (10);
|
|
tobool: ToBoolTy(reg) = 22 (10);
|
|
not: Not(tobool, reg) = 322 (10); // fold cast-to-bool into not
|
|
toubyte: ToUByteTy(reg) = 23 (10);
|
|
tosbyte: ToSByteTy(reg) = 24 (10);
|
|
toushort: ToUShortTy(reg) = 25 (10);
|
|
toshort: ToShortTy(reg) = 26 (10);
|
|
touint: ToUIntTy(reg) = 27 (10);
|
|
toint: ToIntTy(reg) = 28 (10);
|
|
toulong: ToULongTy(reg) = 29 (10);
|
|
tolong: ToLongTy(reg) = 30 (10);
|
|
tofloat: ToFloatTy(reg) = 31 (10);
|
|
todouble: ToDoubleTy(reg) = 32 (10);
|
|
todoubleConst: ToDoubleTy(Constant) = 232 (10);
|
|
|
|
/*
|
|
* All the ways to produce a boolean value (Not and ToBoolTy are above):
|
|
* -- boolean operators: Not, And, Or, ..., ToBoolTy, SetCC
|
|
* -- an existing boolean register not in the same tree
|
|
* -- a boolean constant
|
|
*
|
|
* For And, Or, Xor, we add special cases for when:
|
|
* (a) one operand is a constant.
|
|
* (b) one operand is a NOT, to use the ANDN, ORN, and XORN instrns.
|
|
* We do not need the cases when both operands are constant
|
|
* because constant folding should take care of that beforehand.
|
|
*/
|
|
reg: And(reg,reg) = 38 (10);
|
|
reg: And(reg,not) = 138 (0); /* cost is counted for not */
|
|
reg: And(reg,Constant) = 238 (10);
|
|
reg: Or (reg,reg) = 39 (10);
|
|
reg: Or (reg,not) = 139 (0); /* cost is counted for not */
|
|
reg: Or (reg,Constant) = 239 (10);
|
|
reg: Xor(reg,reg) = 40 (10);
|
|
reg: Xor(reg,not) = 140 (0); /* cost is counted for not */
|
|
reg: Xor(reg,Constant) = 240 (10);
|
|
|
|
/* Special case non-terms for BrCond(setCC) and BrCond(setCCconst) */
|
|
setCCconst: SetCC(reg,Constant) = 41 (5);
|
|
setCC: SetCC(reg,reg) = 42 (10);
|
|
|
|
reg: not = 221 (0);
|
|
reg: tobool = 222 (0);
|
|
reg: setCCconst = 241 (0);
|
|
reg: setCC = 242 (0);
|
|
|
|
/*
|
|
* Special case non-terminals for the unary cast operators.
|
|
* Some of these can be folded into other operations (e.g., todouble).
|
|
* The rest are just for uniformity.
|
|
*/
|
|
reg: toubyte = 123 (0);
|
|
reg: tosbyte = 124 (0);
|
|
reg: toushort = 125 (0);
|
|
reg: toshort = 126 (0);
|
|
reg: touint = 127 (0);
|
|
reg: toint = 128 (0);
|
|
reg: toulong = 129 (0);
|
|
reg: tolong = 130 (0);
|
|
reg: tofloat = 131 (0);
|
|
reg: todouble = 132 (0);
|
|
reg: todoubleConst = 133 (0);
|
|
|
|
reg: ToArrayTy(reg) = 19 (10);
|
|
reg: ToPointerTy(reg) = 20 (10);
|
|
|
|
/*
|
|
* The binary arithmetic operators.
|
|
*/
|
|
reg: Add(reg,reg) = 33 (10);
|
|
reg: Sub(reg,reg) = 34 (10);
|
|
reg: Mul(reg,reg) = 35 (30);
|
|
reg: Mul(todouble,todouble) = 135 (20); /* avoids 1-2 type converts */
|
|
reg: Div(reg,reg) = 36 (60);
|
|
reg: Rem(reg,reg) = 37 (60);
|
|
|
|
/*
|
|
* The binary bitwise logical operators.
|
|
*/
|
|
reg: BAnd(reg,reg) = 338 (10);
|
|
reg: BAnd(reg,bnot) = 438 ( 0); /* cost is counted for not */
|
|
reg: BOr( reg,reg) = 339 (10);
|
|
reg: BOr( reg,bnot) = 439 ( 0); /* cost is counted for not */
|
|
reg: BXor(reg,reg) = 340 (10);
|
|
reg: BXor(reg,bnot) = 440 ( 0); /* cost is counted for not */
|
|
|
|
reg: bnot = 321 ( 0);
|
|
bnot: BNot(reg,reg) = 421 (10);
|
|
|
|
/*
|
|
* Special cases for the binary operators with one constant argument.
|
|
* Not and BNot are effectively just one argument, so not needed here.
|
|
*/
|
|
reg: Add(reg,Constant) = 233 (10);
|
|
reg: Sub(reg,Constant) = 234 (10);
|
|
reg: Mul(reg,Constant) = 235 (30);
|
|
reg: Mul(todouble,todoubleConst) = 335 (20); /* avoids 1-2 type converts */
|
|
reg: Div(reg,Constant) = 236 (60);
|
|
reg: Rem(reg,Constant) = 237 (60);
|
|
|
|
reg: BAnd(reg,Constant) = 538 (0);
|
|
reg: BOr( reg,Constant) = 539 (0);
|
|
reg: BXor(reg,Constant) = 540 (0);
|
|
|
|
/*
|
|
* Memory access instructions
|
|
*/
|
|
reg: Load(reg) = 51 (30);
|
|
reg: Load(ptrreg) = 52 (20); /* 1 counted for ptrreg */
|
|
reg: ptrreg = 155 (0);
|
|
ptrreg: GetElemPtr(reg) = 55 (10);
|
|
ptrreg: GetElemPtrIdx(reg,reg) = 56 (10);
|
|
reg: Alloca = 57 (10);
|
|
reg: AllocaN(reg) = 58 (10);
|
|
|
|
/*
|
|
* Other operators producing register values
|
|
*/
|
|
reg: Call = 61 (20); /* just ignore the operands! */
|
|
reg: Shl(reg,reg) = 62 (20); /* 1 for issue restrictions */
|
|
reg: Shr(reg,reg) = 63 (20); /* 1 for issue restrictions */
|
|
reg: Phi(reg,reg) = 64 (0);
|
|
reg: VaArg(reg) = 65 (40); /* load from stack then incr */
|
|
|
|
/*
|
|
* Finally, leaf nodes of expression trees.
|
|
*/
|
|
reg: VReg = 71 (0);
|
|
reg: Constant = 72 (3); /* prefer direct use */
|
|
|
|
|
|
|
|
%%
|
|
/*-----------------------------------------------------------------------*
|
|
* The rest of this file provides code to print the cover produced
|
|
* by BURG and information about computed tree cost and matches.
|
|
* This code was taken from sample.gr provided with BURG.
|
|
*-----------------------------------------------------------------------*/
|
|
|
|
void printcover(NODEPTR_TYPE p, int goalnt, int indent) {
|
|
int eruleno = burm_rule(STATE_LABEL(p), goalnt);
|
|
short *nts = burm_nts[eruleno];
|
|
NODEPTR_TYPE kids[10];
|
|
int i;
|
|
|
|
if (eruleno == 0) {
|
|
printf("no cover\n");
|
|
return;
|
|
}
|
|
for (i = 0; i < indent; i++)
|
|
printf(".");
|
|
printf("%s\n", burm_string[eruleno]);
|
|
burm_kids(p, eruleno, kids);
|
|
for (i = 0; nts[i]; i++)
|
|
printcover(kids[i], nts[i], indent+1);
|
|
}
|
|
|
|
void printtree(NODEPTR_TYPE p) {
|
|
int op = burm_op_label(p);
|
|
|
|
printf("%s", burm_opname[op]);
|
|
switch (burm_arity[op]) {
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
printf("(");
|
|
printtree(burm_child(p, 0));
|
|
printf(")");
|
|
break;
|
|
case 2:
|
|
printf("(");
|
|
printtree(burm_child(p, 0));
|
|
printf(", ");
|
|
printtree(burm_child(p, 1));
|
|
printf(")");
|
|
break;
|
|
}
|
|
}
|
|
|
|
int treecost(NODEPTR_TYPE p, int goalnt, int costindex) {
|
|
int eruleno = burm_rule(STATE_LABEL(p), goalnt);
|
|
int cost = burm_cost[eruleno][costindex], i;
|
|
short *nts = burm_nts[eruleno];
|
|
NODEPTR_TYPE kids[10];
|
|
|
|
burm_kids(p, eruleno, kids);
|
|
for (i = 0; nts[i]; i++)
|
|
cost += treecost(kids[i], nts[i], costindex);
|
|
return cost;
|
|
}
|
|
|
|
void printMatches(NODEPTR_TYPE p) {
|
|
int nt;
|
|
int eruleno;
|
|
|
|
printf("Node 0x%lx= ", (unsigned long)p);
|
|
printtree(p);
|
|
printf(" matched rules:\n");
|
|
for (nt = 1; burm_ntname[nt] != (char*)NULL; nt++)
|
|
if ((eruleno = burm_rule(STATE_LABEL(p), nt)) != 0)
|
|
printf("\t%s\n", burm_string[eruleno]);
|
|
}
|