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/*
* Copyright 2010 Christoph Bumiller
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __NVC0_COMPILER_H__
#define __NVC0_COMPILER_H__
#include "nv50/nv50_debug.h"
#include "pipe/p_defines.h"
#include "util/u_inlines.h"
#include "util/u_memory.h"
#include "util/u_double_list.h"
/* pseudo opcodes */
#define NV_OP_UNDEF 0
#define NV_OP_BIND 1
#define NV_OP_MERGE 2
#define NV_OP_PHI 3
#define NV_OP_SELECT 4
#define NV_OP_NOP 5
/**
* BIND forces source operand i into the same register as destination operand i,
* and the operands will be assigned consecutive registers (needed for TEX).
* Beware conflicts !
* SELECT forces its multiple source operands and its destination operand into
* one and the same register.
*/
/* base opcodes */
#define NV_OP_LD 6
#define NV_OP_ST 7
#define NV_OP_MOV 8
#define NV_OP_AND 9
#define NV_OP_OR 10
#define NV_OP_XOR 11
#define NV_OP_SHL 12
#define NV_OP_SHR 13
#define NV_OP_NOT 14
#define NV_OP_SET 15
#define NV_OP_ADD 16
#define NV_OP_SUB 17
#define NV_OP_MUL 18
#define NV_OP_MAD 19
#define NV_OP_ABS 20
#define NV_OP_NEG 21
#define NV_OP_MAX 22
#define NV_OP_MIN 23
#define NV_OP_CVT 24
#define NV_OP_CEIL 25
#define NV_OP_FLOOR 26
#define NV_OP_TRUNC 27
#define NV_OP_SAD 28
/* shader opcodes */
#define NV_OP_VFETCH 29
#define NV_OP_PFETCH 30
#define NV_OP_EXPORT 31
#define NV_OP_LINTERP 32
#define NV_OP_PINTERP 33
#define NV_OP_EMIT 34
#define NV_OP_RESTART 35
#define NV_OP_TEX 36
#define NV_OP_TXB 37
#define NV_OP_TXL 38
#define NV_OP_TXF 39
#define NV_OP_TXQ 40
#define NV_OP_QUADOP 41
#define NV_OP_DFDX 42
#define NV_OP_DFDY 43
#define NV_OP_KIL 44
/* control flow opcodes */
#define NV_OP_BRA 45
#define NV_OP_CALL 46
#define NV_OP_RET 47
#define NV_OP_EXIT 48
#define NV_OP_BREAK 49
#define NV_OP_BREAKADDR 50
#define NV_OP_JOINAT 51
#define NV_OP_JOIN 52
/* typed opcodes */
#define NV_OP_ADD_F32 NV_OP_ADD
#define NV_OP_ADD_B32 53
#define NV_OP_MUL_F32 NV_OP_MUL
#define NV_OP_MUL_B32 54
#define NV_OP_ABS_F32 NV_OP_ABS
#define NV_OP_ABS_S32 55
#define NV_OP_NEG_F32 NV_OP_NEG
#define NV_OP_NEG_S32 56
#define NV_OP_MAX_F32 NV_OP_MAX
#define NV_OP_MAX_S32 57
#define NV_OP_MAX_U32 58
#define NV_OP_MIN_F32 NV_OP_MIN
#define NV_OP_MIN_S32 59
#define NV_OP_MIN_U32 60
#define NV_OP_SET_F32 61
#define NV_OP_SET_S32 62
#define NV_OP_SET_U32 63
#define NV_OP_SAR 64
#define NV_OP_RCP 65
#define NV_OP_RSQ 66
#define NV_OP_LG2 67
#define NV_OP_SIN 68
#define NV_OP_COS 69
#define NV_OP_EX2 70
#define NV_OP_PRESIN 71
#define NV_OP_PREEX2 72
#define NV_OP_SAT 73
/* newly added opcodes */
#define NV_OP_SET_F32_AND 74
#define NV_OP_SET_F32_OR 75
#define NV_OP_SET_F32_XOR 76
#define NV_OP_SELP 77
#define NV_OP_SLCT 78
#define NV_OP_SLCT_F32 NV_OP_SLCT
#define NV_OP_SLCT_S32 79
#define NV_OP_SLCT_U32 80
#define NV_OP_SUB_F32 NV_OP_SUB
#define NV_OP_SUB_S32 81
#define NV_OP_MAD_F32 NV_OP_MAD
#define NV_OP_FSET_F32 82
#define NV_OP_TXG 83
#define NV_OP_COUNT 84
/* nv50 files omitted */
#define NV_FILE_GPR 0
#define NV_FILE_COND 1
#define NV_FILE_PRED 2
#define NV_FILE_IMM 16
#define NV_FILE_MEM_S 32
#define NV_FILE_MEM_V 34
#define NV_FILE_MEM_A 35
#define NV_FILE_MEM_L 48
#define NV_FILE_MEM_G 64
#define NV_FILE_MEM_C(i) (80 + i)
#define NV_IS_MEMORY_FILE(f) ((f) >= NV_FILE_MEM_S)
#define NV_MOD_NEG 1
#define NV_MOD_ABS 2
#define NV_MOD_NOT 4
#define NV_MOD_SAT 8
#define NV_TYPE_U8 0x00
#define NV_TYPE_S8 0x01
#define NV_TYPE_U16 0x02
#define NV_TYPE_S16 0x03
#define NV_TYPE_U32 0x04
#define NV_TYPE_S32 0x05
#define NV_TYPE_P32 0x07
#define NV_TYPE_F32 0x09
#define NV_TYPE_F64 0x0b
#define NV_TYPE_VEC(x, n) (NV_TYPE_##x | (n << 4))
#define NV_TYPE_ANY 0xff
#define NV_TYPE_ISINT(t) ((t) < 7)
#define NV_TYPE_ISSGD(t) ((t) & 1)
#define NV_CC_FL 0x0
#define NV_CC_LT 0x1
#define NV_CC_EQ 0x2
#define NV_CC_LE 0x3
#define NV_CC_GT 0x4
#define NV_CC_NE 0x5
#define NV_CC_GE 0x6
#define NV_CC_U 0x8
#define NV_CC_TR 0xf
#define NV_CC_O 0x10
#define NV_CC_C 0x11
#define NV_CC_A 0x12
#define NV_CC_S 0x13
#define NV_CC_INVERSE(cc) ((cc) ^ 0x7)
/* for 1 bit predicates: */
#define NV_CC_P 0
#define NV_CC_NOT_P 1
uint8_t nvc0_ir_reverse_cc(uint8_t cc);
#define NV_PC_MAX_INSTRUCTIONS 2048
#define NV_PC_MAX_VALUES (NV_PC_MAX_INSTRUCTIONS * 4)
#define NV_PC_MAX_BASIC_BLOCKS 1024
struct nv_op_info {
uint base; /* e.g. ADD_S32 -> ADD */
char name[12];
uint8_t type;
uint16_t mods;
unsigned flow : 1;
unsigned commutative : 1;
unsigned vector : 1;
unsigned predicate : 1;
unsigned pseudo : 1;
unsigned immediate : 3;
unsigned memory : 3;
};
extern struct nv_op_info nvc0_op_info_table[];
#define NV_BASEOP(op) (nvc0_op_info_table[op].base)
#define NV_OPTYPE(op) (nvc0_op_info_table[op].type)
static INLINE boolean
nv_is_texture_op(uint opcode)
{
return (opcode >= NV_OP_TEX && opcode <= NV_OP_TXQ);
}
static INLINE boolean
nv_is_vector_op(uint opcode)
{
return nvc0_op_info_table[opcode].vector ? TRUE : FALSE;
}
static INLINE boolean
nv_op_commutative(uint opcode)
{
return nvc0_op_info_table[opcode].commutative ? TRUE : FALSE;
}
static INLINE uint8_t
nv_op_supported_src_mods(uint opcode, int s)
{
return (nvc0_op_info_table[opcode].mods >> (s * 4)) & 0xf;
}
static INLINE uint
nv_type_order(ubyte type)
{
switch (type & 0xf) {
case NV_TYPE_U8:
case NV_TYPE_S8:
return 0;
case NV_TYPE_U16:
case NV_TYPE_S16:
return 1;
case NV_TYPE_U32:
case NV_TYPE_F32:
case NV_TYPE_S32:
case NV_TYPE_P32:
return 2;
case NV_TYPE_F64:
return 3;
}
assert(0);
return 0;
}
static INLINE uint
nv_type_sizeof(ubyte type)
{
if (type & 0xf0)
return (1 << nv_type_order(type)) * (type >> 4);
return 1 << nv_type_order(type);
}
static INLINE uint
nv_type_sizeof_base(ubyte type)
{
return 1 << nv_type_order(type);
}
struct nv_reg {
uint32_t address; /* for memory locations */
int id; /* for registers */
ubyte file;
ubyte size;
union {
int32_t s32;
int64_t s64;
uint64_t u64;
uint32_t u32; /* expected to be 0 for $r63 */
float f32;
double f64;
} imm;
};
struct nv_range {
struct nv_range *next;
int bgn;
int end;
};
struct nv_ref;
struct nv_value {
struct nv_reg reg;
struct nv_instruction *insn;
struct nv_value *join;
struct nv_ref *last_use;
int n;
struct nv_range *livei;
int refc;
struct nv_value *next;
struct nv_value *prev;
};
struct nv_ref {
struct nv_value *value;
struct nv_instruction *insn;
struct list_head list; /* connects uses of the same value */
uint8_t mod;
uint8_t flags;
};
#define NV_REF_FLAG_REGALLOC_PRIV (1 << 0)
struct nv_basic_block;
struct nv_instruction {
struct nv_instruction *next;
struct nv_instruction *prev;
uint opcode;
uint serial;
struct nv_value *def[5];
struct nv_ref *src[6];
int8_t predicate; /* index of predicate src */
int8_t indirect; /* index of pointer src */
union {
struct {
uint8_t t; /* TIC binding */
uint8_t s; /* TSC binding */
} tex;
struct {
uint8_t d; /* output type */
uint8_t s; /* input type */
} cvt;
} ext;
struct nv_basic_block *bb;
struct nv_basic_block *target; /* target block of control flow insn */
unsigned cc : 5; /* condition code */
unsigned fixed : 1; /* don't optimize away (prematurely) */
unsigned terminator : 1;
unsigned join : 1;
unsigned set_cond : 4; /* 2nd byte */
unsigned saturate : 1;
unsigned centroid : 1;
unsigned flat : 1;
unsigned patch : 1;
unsigned lanes : 4; /* 3rd byte */
unsigned tex_dim : 2;
unsigned tex_array : 1;
unsigned tex_cube : 1;
unsigned tex_shadow : 1; /* 4th byte */
unsigned tex_live : 1;
unsigned tex_mask : 4;
uint8_t quadop;
};
static INLINE int
nvi_vector_size(struct nv_instruction *nvi)
{
int i;
assert(nvi);
for (i = 0; i < 5 && nvi->def[i]; ++i);
return i;
}
#define CFG_EDGE_FORWARD 0
#define CFG_EDGE_BACK 1
#define CFG_EDGE_LOOP_ENTER 2
#define CFG_EDGE_LOOP_LEAVE 4
#define CFG_EDGE_FAKE 8
/* 'WALL' edge means where reachability check doesn't follow */
/* 'LOOP' edge means just having to do with loops */
#define IS_LOOP_EDGE(k) ((k) & 7)
#define IS_WALL_EDGE(k) ((k) & 9)
struct nv_basic_block {
struct nv_instruction *entry; /* first non-phi instruction */
struct nv_instruction *exit;
struct nv_instruction *phi; /* very first instruction */
int num_instructions;
struct nv_basic_block *out[2]; /* no indirect branches -> 2 */
struct nv_basic_block *in[8]; /* hope that suffices */
uint num_in;
ubyte out_kind[2];
ubyte in_kind[8];
int id;
int subroutine;
uint priv; /* reset to 0 after you're done */
uint pass_seq;
uint32_t emit_pos; /* position, size in emitted code (in bytes) */
uint32_t emit_size;
uint32_t live_set[NV_PC_MAX_VALUES / 32];
};
struct nvc0_translation_info;
struct nv_pc {
struct nv_basic_block **root;
struct nv_basic_block *current_block;
struct nv_basic_block *parent_block;
int loop_nesting_bound;
uint pass_seq;
struct nv_value values[NV_PC_MAX_VALUES];
struct nv_instruction instructions[NV_PC_MAX_INSTRUCTIONS];
struct nv_ref **refs;
struct nv_basic_block *bb_list[NV_PC_MAX_BASIC_BLOCKS];
int num_values;
int num_instructions;
int num_refs;
int num_blocks;
int num_subroutines;
int max_reg[4];
uint32_t *immd_buf; /* populated on emit */
unsigned immd_count;
uint32_t *emit;
uint32_t emit_size;
uint32_t emit_pos;
void *reloc_entries;
unsigned num_relocs;
/* optimization enables */
boolean opt_reload_elim;
boolean is_fragprog;
};
void nvc0_insn_append(struct nv_basic_block *, struct nv_instruction *);
void nvc0_insn_insert_before(struct nv_instruction *, struct nv_instruction *);
void nvc0_insn_insert_after(struct nv_instruction *, struct nv_instruction *);
static INLINE struct nv_instruction *
nv_alloc_instruction(struct nv_pc *pc, uint opcode)
{
struct nv_instruction *insn;
insn = &pc->instructions[pc->num_instructions++];
assert(pc->num_instructions < NV_PC_MAX_INSTRUCTIONS);
insn->opcode = opcode;
insn->cc = NV_CC_P;
insn->indirect = -1;
insn->predicate = -1;
return insn;
}
static INLINE struct nv_instruction *
new_instruction(struct nv_pc *pc, uint opcode)
{
struct nv_instruction *insn = nv_alloc_instruction(pc, opcode);
nvc0_insn_append(pc->current_block, insn);
return insn;
}
static INLINE struct nv_instruction *
new_instruction_at(struct nv_pc *pc, struct nv_instruction *at, uint opcode)
{
struct nv_instruction *insn = nv_alloc_instruction(pc, opcode);
nvc0_insn_insert_after(at, insn);
return insn;
}
static INLINE struct nv_value *
new_value(struct nv_pc *pc, ubyte file, ubyte size)
{
struct nv_value *value = &pc->values[pc->num_values];
assert(pc->num_values < NV_PC_MAX_VALUES - 1);
value->n = pc->num_values++;
value->join = value;
value->reg.id = -1;
value->reg.file = file;
value->reg.size = size;
return value;
}
static INLINE struct nv_value *
new_value_like(struct nv_pc *pc, struct nv_value *like)
{
return new_value(pc, like->reg.file, like->reg.size);
}
static INLINE struct nv_ref *
new_ref(struct nv_pc *pc, struct nv_value *val)
{
int i;
struct nv_ref *ref;
if ((pc->num_refs % 64) == 0) {
const unsigned old_size = pc->num_refs * sizeof(struct nv_ref *);
const unsigned new_size = (pc->num_refs + 64) * sizeof(struct nv_ref *);
pc->refs = REALLOC(pc->refs, old_size, new_size);
ref = CALLOC(64, sizeof(struct nv_ref));
for (i = 0; i < 64; ++i)
pc->refs[pc->num_refs + i] = &ref[i];
}
ref = pc->refs[pc->num_refs++];
ref->value = val;
LIST_INITHEAD(&ref->list);
++val->refc;
return ref;
}
static INLINE struct nv_basic_block *
new_basic_block(struct nv_pc *pc)
{
struct nv_basic_block *bb;
if (pc->num_blocks >= NV_PC_MAX_BASIC_BLOCKS)
return NULL;
bb = CALLOC_STRUCT(nv_basic_block);
bb->id = pc->num_blocks;
pc->bb_list[pc->num_blocks++] = bb;
return bb;
}
static INLINE void
nv_reference(struct nv_pc *pc,
struct nv_instruction *nvi, int c, struct nv_value *s)
{
struct nv_ref **d = &nvi->src[c];
assert(c < 6);
if (*d) {
--(*d)->value->refc;
LIST_DEL(&(*d)->list);
}
if (s) {
if (!*d) {
*d = new_ref(pc, s);
(*d)->insn = nvi;
} else {
LIST_DEL(&(*d)->list);
(*d)->value = s;
++(s->refc);
}
if (!s->last_use)
s->last_use = *d;
else
LIST_ADDTAIL(&s->last_use->list, &(*d)->list);
s->last_use = *d;
(*d)->insn = nvi;
} else {
*d = NULL;
}
}
/* nvc0_emit.c */
void nvc0_emit_instruction(struct nv_pc *, struct nv_instruction *);
/* nvc0_print.c */
const char *nvc0_opcode_name(uint opcode);
void nvc0_print_instruction(struct nv_instruction *);
/* nvc0_pc.c */
void nvc0_print_function(struct nv_basic_block *root);
void nvc0_print_program(struct nv_pc *);
boolean nvc0_insn_can_load(struct nv_instruction *, int s,
struct nv_instruction *);
boolean nvc0_insn_is_predicateable(struct nv_instruction *);
int nvc0_insn_refcount(struct nv_instruction *);
void nvc0_insn_delete(struct nv_instruction *);
void nvc0_insns_permute(struct nv_instruction *prev, struct nv_instruction *);
void nvc0_bblock_attach(struct nv_basic_block *parent,
struct nv_basic_block *child, ubyte edge_kind);
boolean nvc0_bblock_dominated_by(struct nv_basic_block *,
struct nv_basic_block *);
boolean nvc0_bblock_reachable_by(struct nv_basic_block *future,
struct nv_basic_block *past,
struct nv_basic_block *final);
struct nv_basic_block *nvc0_bblock_dom_frontier(struct nv_basic_block *);
int nvc0_pc_replace_value(struct nv_pc *pc,
struct nv_value *old_val,
struct nv_value *new_val);
struct nv_value *nvc0_pc_find_immediate(struct nv_ref *);
struct nv_value *nvc0_pc_find_constant(struct nv_ref *);
typedef void (*nv_pc_pass_func)(void *priv, struct nv_basic_block *b);
void nvc0_pc_pass_in_order(struct nv_basic_block *, nv_pc_pass_func, void *);
int nvc0_pc_exec_pass0(struct nv_pc *pc);
int nvc0_pc_exec_pass1(struct nv_pc *pc);
int nvc0_pc_exec_pass2(struct nv_pc *pc);
int nvc0_tgsi_to_nc(struct nv_pc *, struct nvc0_translation_info *);
#endif // NV50_COMPILER_H
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