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common.hpp
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#ifndef COMMON_HPP
#define COMMON_HPP
#include <xbyak.h>
#include <string.h>
struct cpuinfo {
bool have_sse42 = false;
bool have_avx = false;
bool have_avx2 = false;
bool have_fma = false;
bool have_avx512f = false;
bool have_avx512er = false;
bool have_avx512vnni = false;
bool have_avx512bf16 = false;
bool have_popcnt = false;
bool have_aes = false;
bool have_pclmulqdq = false;
};
extern cpuinfo info;
extern bool output_csv;
extern FILE *logs;
extern int perf_fd;
#ifdef __linux
#include <unistd.h>
#include <fcntl.h>
#include <sys/syscall.h>
#include <linux/perf_event.h>
#include <asm/unistd.h>
#include <sys/eventfd.h>
static inline long long
read_cycle(void)
{
long long val;
ssize_t sz = read(perf_fd, &val, sizeof(val));
if (sz != sizeof(val)) {
perror("read");
exit(1);
}
return val;
}
#else
#define read_cycle() __rdtsc()
#endif
extern char MIE_ALIGN(2048*1024) zero_mem[4096*1024];
extern char MIE_ALIGN(2048*1024) data_mem[4096*1024];
enum lt_op {
LT_LATENCY,
LT_THROUGHPUT,
LT_THROUGHPUT_KILLDEP
};
enum operand_type {
OT_INT,
OT_FP32,
OT_FP64
};
template <typename T> struct RegMap;
template <>
struct RegMap<Xbyak::Xmm>
{
const char *name;
Xbyak::Xmm v4, v5, v6, v7;
Xbyak::Xmm v8, v9, v10, v11, v12, v13, v14, v15;
RegMap()
:name("m128"),
v4(4), v5(5), v6(6), v7(7),
v8(8), v9(9), v10(10), v11(11), v12(12), v13(13), v14(14), v15(15)
{}
bool vec_reg() {
return true;
}
void save(Xbyak::CodeGenerator *g, Xbyak::Xmm r, int off, enum operand_type ot) {
switch (ot) {
case OT_INT:
g->movdqa(g->ptr [g->rsp + off], r);
break;
case OT_FP32:
g->movaps(g->ptr [g->rsp + off], r);
break;
case OT_FP64:
g->movapd(g->ptr [g->rsp + off], r);
break;
}
}
void restore(Xbyak::CodeGenerator *g, Xbyak::Xmm r, int off, enum operand_type ot) {
switch (ot) {
case OT_INT:
g->movdqa(r, g->ptr [g->rsp + off]);
break;
case OT_FP32:
g->movaps(r, g->ptr [g->rsp + off]);
break;
case OT_FP64:
g->movapd(r, g->ptr [g->rsp + off]);
break;
}
}
void killdep(Xbyak::CodeGenerator *g, Xbyak::Xmm r, enum operand_type ot) {
switch (ot) {
case OT_INT:
g->pxor(r, r);
break;
case OT_FP32:
g->xorps(r, r);
break;
case OT_FP64:
g->xorpd(r, r);
break;
}
}
};
template <>
struct RegMap<Xbyak::Ymm>
{
const char *name;
Xbyak::Ymm v4, v5, v6, v7;
Xbyak::Ymm v8, v9, v10, v11, v12, v13, v14, v15;
RegMap()
:name("m256"),
v4(4), v5(5), v6(6), v7(7),
v8(8), v9(9), v10(10), v11(11), v12(12), v13(13), v14(14), v15(15)
{}
bool vec_reg() {
return true;
}
void save(Xbyak::CodeGenerator *g, Xbyak::Ymm r, int off, enum operand_type ot) {
switch (ot) {
case OT_INT:
g->vmovdqa(g->ptr [g->rsp + off], r);
break;
case OT_FP32:
g->vmovaps(g->ptr [g->rsp + off], r);
break;
case OT_FP64:
g->vmovapd(g->ptr [g->rsp + off], r);
break;
}
}
void restore(Xbyak::CodeGenerator *g, Xbyak::Ymm r, int off, enum operand_type ot) {
switch (ot) {
case OT_INT:
g->vmovdqa(r, g->ptr [g->rsp + off]);
break;
case OT_FP32:
g->vmovaps(r, g->ptr [g->rsp + off]);
break;
case OT_FP64:
g->vmovapd(r, g->ptr [g->rsp + off]);
break;
}
}
void killdep(Xbyak::CodeGenerator *g, Xbyak::Ymm r, enum operand_type ot) {
switch (ot) {
case OT_INT:
g->vpxor(r, r, r);
break;
case OT_FP32:
g->vxorps(r, r, r);
break;
case OT_FP64:
g->vxorpd(r, r, r);
break;
}
}
};
template <>
struct RegMap<Xbyak::Zmm>
{
const char *name;
Xbyak::Zmm v4, v5, v6, v7;
Xbyak::Zmm v8, v9, v10, v11, v12, v13, v14, v15;
Xbyak::Zmm v16, v17, v18, v19, v20, v21, v22, v23;
Xbyak::Zmm v24, v25, v26, v27, v28, v29, v30, v31;
RegMap()
:name("m512"),
v4(4), v5(5), v6(6), v7(7),
v8(8), v9(9), v10(10), v11(11), v12(12), v13(13), v14(14), v15(15),
v16(16), v17(17), v18(18), v19(19), v20(20), v21(21), v22(22), v23(23),
v24(24), v25(25), v26(26), v27(27), v28(28), v29(29), v30(30), v31(31)
{}
bool vec_reg() {
return true;
}
void save(Xbyak::CodeGenerator *g, Xbyak::Ymm r, int off, enum operand_type ot) {
switch (ot) {
case OT_INT:
g->vmovdqa(g->ptr [g->rsp + off], r);
break;
case OT_FP32:
g->vmovaps(g->ptr [g->rsp + off], r);
break;
case OT_FP64:
g->vmovapd(g->ptr [g->rsp + off], r);
break;
}
}
void restore(Xbyak::CodeGenerator *g, Xbyak::Ymm r, int off, enum operand_type ot) {
switch (ot) {
case OT_INT:
g->vmovdqa(r, g->ptr [g->rsp + off]);
break;
case OT_FP32:
g->vmovaps(r, g->ptr [g->rsp + off]);
break;
case OT_FP64:
g->vmovapd(r, g->ptr [g->rsp + off]);
break;
}
}
void killdep(Xbyak::CodeGenerator *g, Xbyak::Ymm r, enum operand_type ot) {
switch (ot) {
case OT_INT:
g->vpxorq(r, r, r);
break;
case OT_FP32:
g->vpxorq(r, r, r);
break;
case OT_FP64:
g->vpxorq(r, r, r);
break;
}
}
};
template <>
struct RegMap<Xbyak::Reg64>
{
const char *name;
Xbyak::Reg64 v4, v5, v6, v7;
Xbyak::Reg64 v8, v9, v10, v11, v12, v13, v14, v15;
RegMap()
:name("reg64"),
v4(Xbyak::Operand::RSP),
v5(Xbyak::Operand::RBP),
v6(Xbyak::Operand::RSI),
v7(Xbyak::Operand::RDI),
v8(Xbyak::Operand::R8),
v9(Xbyak::Operand::R9),
v10(Xbyak::Operand::R10),
v11(Xbyak::Operand::R11),
v12(Xbyak::Operand::R12),
v13(Xbyak::Operand::R13),
v14(Xbyak::Operand::R14),
v15(Xbyak::Operand::R15)
{}
bool vec_reg() {
return false;
}
void save(Xbyak::CodeGenerator *g, Xbyak::Reg64 r, int off, enum operand_type ) {
g->mov(g->ptr[g->rsp + off], r);
}
void restore(Xbyak::CodeGenerator *g, Xbyak::Reg64 r, int off, enum operand_type ) {
g->mov(r, g->ptr[g->rsp + off]);
}
void killdep(Xbyak::CodeGenerator *g, Xbyak::Reg64 r, enum operand_type) {
g->xor_(r, r);
}
};
template <typename RegType, typename Gen, typename F>
struct gen_throughput{
void operator () (Gen *g, RegMap<RegType> &rm, F f, int num_insn){
if (rm.vec_reg()) {
for (int ii=0; ii<num_insn/12; ii++) {
f(g, rm.v4, rm.v4);
f(g, rm.v5, rm.v5);
f(g, rm.v6, rm.v6);
f(g, rm.v7, rm.v7);
f(g, rm.v8, rm.v8);
f(g, rm.v9, rm.v9);
f(g, rm.v10, rm.v10);
f(g, rm.v11, rm.v11);
f(g, rm.v12, rm.v12);
f(g, rm.v13, rm.v13);
f(g, rm.v14, rm.v14);
f(g, rm.v15, rm.v15);
}
} else {
for (int ii=0; ii<num_insn/8; ii++) {
f(g, rm.v8, rm.v8);
f(g, rm.v9, rm.v9);
f(g, rm.v10, rm.v10);
f(g, rm.v11, rm.v11);
f(g, rm.v12, rm.v12);
f(g, rm.v13, rm.v13);
f(g, rm.v14, rm.v14);
f(g, rm.v15, rm.v15);
}
}
}
};
template <typename RegType,
typename F>
struct Gen
:public Xbyak::CodeGenerator
{
Gen(F f, bool reserve_rcx, int num_loop, int num_insn, enum lt_op o, enum operand_type ot) {
RegMap<RegType> rm;
int reg_size = 64;
int num_reg = 12;
push(rbp);
mov(rbp, rsp);
and_(rsp, -(Xbyak::sint64)64);
sub(rsp, reg_size * (num_reg + 1));
if (rm.vec_reg()) {
rm.save(this, rm.v4, -reg_size*12, ot);
rm.save(this, rm.v5, -reg_size*11, ot);
rm.save(this, rm.v6, -reg_size*10, ot);
rm.save(this, rm.v7, -reg_size*9, ot);
}
rm.save(this, rm.v8, -reg_size*8, ot);
rm.save(this, rm.v9, -reg_size*7, ot);
rm.save(this, rm.v10, -reg_size*6, ot);
rm.save(this, rm.v11, -reg_size*5, ot);
rm.save(this, rm.v12, -reg_size*4, ot);
rm.save(this, rm.v13, -reg_size*3, ot);
rm.save(this, rm.v14, -reg_size*2, ot);
rm.save(this, rm.v15, -reg_size*1, ot);
if (rm.vec_reg()) {
rm.killdep(this, rm.v4, ot);
rm.killdep(this, rm.v5, ot);
rm.killdep(this, rm.v6, ot);
rm.killdep(this, rm.v7, ot);
}
rm.killdep(this, rm.v8, ot);
rm.killdep(this, rm.v9, ot);
rm.killdep(this, rm.v10, ot);
rm.killdep(this, rm.v11, ot);
rm.killdep(this, rm.v12, ot);
rm.killdep(this, rm.v13, ot);
rm.killdep(this, rm.v14, ot);
rm.killdep(this, rm.v15, ot);
Xbyak::Reg64 counter_reg = rcx;
if (reserve_rcx) {
counter_reg = rdx;
mov(rcx, 16);
mov(rax, 16);
} else {
mov(rdx, (intptr_t)zero_mem);
}
mov(counter_reg, num_loop);
mov(ptr[rsp], rdi);
xor_(rdi, rdi);
align(16);
L("@@");
switch (o) {
case LT_LATENCY:
for (int ii=0; ii<num_insn; ii++) {
f(this, rm.v8, rm.v8);
}
break;
case LT_THROUGHPUT:
gen_throughput<RegType,Gen,F>()(this, rm, f, num_insn);
break;
case LT_THROUGHPUT_KILLDEP:
if (rm.vec_reg()) {
for (int ii=0; ii<num_insn/12; ii++) {
f(this, rm.v4, rm.v4);
f(this, rm.v5, rm.v5);
f(this, rm.v6, rm.v6);
f(this, rm.v7, rm.v7);
f(this, rm.v8, rm.v8);
f(this, rm.v9, rm.v9);
f(this, rm.v10, rm.v10);
f(this, rm.v11, rm.v11);
f(this, rm.v12, rm.v12);
f(this, rm.v13, rm.v13);
f(this, rm.v14, rm.v14);
f(this, rm.v15, rm.v15);
}
rm.killdep(this, rm.v4, ot);
rm.killdep(this, rm.v5, ot);
rm.killdep(this, rm.v6, ot);
rm.killdep(this, rm.v7, ot);
rm.killdep(this, rm.v8, ot);
rm.killdep(this, rm.v9, ot);
rm.killdep(this, rm.v10, ot);
rm.killdep(this, rm.v11, ot);
rm.killdep(this, rm.v12, ot);
rm.killdep(this, rm.v13, ot);
rm.killdep(this, rm.v14, ot);
rm.killdep(this, rm.v15, ot);
} else {
for (int ii=0; ii<num_insn/8; ii++) {
f(this, rm.v8, rm.v8);
f(this, rm.v9, rm.v9);
f(this, rm.v10, rm.v10);
f(this, rm.v11, rm.v11);
f(this, rm.v12, rm.v12);
f(this, rm.v13, rm.v13);
f(this, rm.v14, rm.v14);
f(this, rm.v15, rm.v15);
}
rm.killdep(this, rm.v8, ot);
rm.killdep(this, rm.v9, ot);
rm.killdep(this, rm.v10, ot);
rm.killdep(this, rm.v11, ot);
rm.killdep(this, rm.v12, ot);
rm.killdep(this, rm.v13, ot);
rm.killdep(this, rm.v14, ot);
rm.killdep(this, rm.v15, ot);
}
break;
}
dec(counter_reg);
jnz("@b");
mov(rdi, ptr[rsp]);
if (rm.vec_reg()) {
rm.restore(this, rm.v4, -reg_size*12, ot);
rm.restore(this, rm.v5, -reg_size*11, ot);
rm.restore(this, rm.v6, -reg_size*10, ot);
rm.restore(this, rm.v7, -reg_size*9, ot);
}
rm.restore(this, rm.v8, -reg_size*8, ot);
rm.restore(this, rm.v9, -reg_size*7, ot);
rm.restore(this, rm.v10, -reg_size*6, ot);
rm.restore(this, rm.v11, -reg_size*5, ot);
rm.restore(this, rm.v12, -reg_size*4, ot);
rm.restore(this, rm.v13, -reg_size*3, ot);
rm.restore(this, rm.v14, -reg_size*2, ot);
rm.restore(this, rm.v15, -reg_size*1, ot);
mov(rsp, rbp);
pop(rbp);
ret();
/*
* latency:
*
* mov rcx, count
* loop:
* op reg, reg
* op reg, reg
* ...
* op reg, reg
* dec rcx
* jne loop
*
*/
/*
* throughput
*
* mov rcx, count
* loop:
* op reg8, reg8
* op reg9, reg9
* ...
* op reg15, reg15
* op reg8, reg8
* op reg9, reg9
* ...
* op reg15, reg15
* ...
* if kill_dep {
* xor r8
* xor r9
* ...
* xor r15
* }
* dec rcx
* jne loop
*
*/
}
};
template <typename RegType> int get_num_insn(void) {
RegMap<RegType> rm;
if (rm.vec_reg()) {
return 36;
} else {
return 64;
}
}
template <typename RegType, typename F>
void
lt(const char *name,
const char *on,
F f,
bool reserve_rcx,
int num_loop,
enum lt_op o,
enum operand_type ot)
{
int num_insn = get_num_insn<RegType>();
Gen<RegType,F> g(f, reserve_rcx, num_loop, num_insn, o, ot);
typedef void (*func_t)(void);
func_t exec = (func_t)g.getCode();
if (1) {
char *p = (char*)g.getCode();
int sz = g.getSize();
FILE *fp = fopen("out.bin", "wb");
for (int i=0; i<sz; i++) {
fputc(p[i], fp);
}
fclose(fp);
}
memset(zero_mem, 0, sizeof(zero_mem));
memset(data_mem, ~0, sizeof(data_mem));
exec();
long long b = read_cycle();
exec();
long long e = read_cycle();
fprintf(logs,
"\"%s\",\"%s\",\"%s\",\"%e\",\"%e\"\n",
RegMap<RegType>().name,
name, on,
(e-b)/(double)(num_insn * num_loop),
(num_insn * num_loop)/(double)(e-b));
if (output_csv) {
printf("\"%s\",\"%s\",\"%s\",\"%e\",\"%e\"\n",
RegMap<RegType>().name,
name, on,
(e-b)/(double)(num_insn * num_loop),
(num_insn * num_loop)/(double)(e-b));
} else {
printf("%8s:%40s:%10s: CPI=%8.2f, IPC=%8.2f\n",
RegMap<RegType>().name,
name, on,
(e-b)/(double)(num_insn * num_loop),
(num_insn * num_loop)/(double)(e-b));
}
}
#define NUM_LOOP (16384*8)
template <typename RegType, typename F>
void
run(const char *name, F f, bool kill_dep, enum operand_type ot)
{
lt<RegType>(name, "latency", f, false, NUM_LOOP, LT_LATENCY, ot);
if (kill_dep) {
lt<RegType>(name, "throughput", f, false, NUM_LOOP, LT_THROUGHPUT_KILLDEP, ot);
} else {
lt<RegType>(name, "throughput", f, false, NUM_LOOP, LT_THROUGHPUT, ot);
}
}
template <typename RegType, typename F_t, typename F_l>
void
run_latency(const char *name, F_t f_t, F_l f_l, bool kill_dep, enum operand_type ot)
{
lt<RegType>(name, "latency", f_l, false, NUM_LOOP, LT_LATENCY, ot);
if (kill_dep) {
lt<RegType>(name, "throughput", f_t, false, NUM_LOOP, LT_THROUGHPUT_KILLDEP, ot);
} else {
lt<RegType>(name, "throughput", f_t, false, NUM_LOOP, LT_THROUGHPUT, ot);
}
}
template <typename RegType, typename F_l>
void
run_latency_only(const char *name, F_l f_l, bool kill_dep, bool reserve_rcx, enum operand_type ot)
{
lt<RegType>(name, "latency", f_l, reserve_rcx, NUM_LOOP, LT_LATENCY, ot);
}
template <typename RegType, typename F_t>
void
run_throghput_only(const char *name, F_t f_t,bool kill_dep, bool reserve_rcx, enum operand_type ot)
{
if (kill_dep) {
lt<RegType>(name, "throughput", f_t, reserve_rcx, NUM_LOOP, LT_THROUGHPUT_KILLDEP, ot);
} else {
lt<RegType>(name, "throughput", f_t, reserve_rcx, NUM_LOOP, LT_THROUGHPUT, ot);
}
}
#define GEN(rt, name, expr, kd, ot) \
run<Xbyak::rt>( \
name, \
[](Xbyak::CodeGenerator *g, Xbyak::rt dst, Xbyak::rt src){expr;}, \
kd, ot);
#define GEN_latency(rt, name, expr_t, expr_l, kd, ot) \
run_latency<Xbyak::rt>( \
name, \
[](Xbyak::CodeGenerator *g, Xbyak::rt dst, Xbyak::rt src){expr_t;}, \
[](Xbyak::CodeGenerator *g, Xbyak::rt dst, Xbyak::rt src){expr_l;}, \
kd, ot);
#define GEN_latency_only(rt, name, expr_l, kd, ot) \
run_latency_only<Xbyak::rt>( \
name, \
[](Xbyak::CodeGenerator *g, Xbyak::rt dst, Xbyak::rt src){expr_l;}, \
kd, false, ot);
#define GEN_latency_only_rcx_clobber(rt, name, expr_l, kd, ot) \
run_latency_only<Xbyak::rt>( \
name, \
[](Xbyak::CodeGenerator *g, Xbyak::rt dst, Xbyak::rt src){expr_l;}, \
kd, true, ot);
#define GEN_throughput_only(rt, name, expr_t, kd, ot) \
run_throghput_only<Xbyak::rt>( \
name, \
[](Xbyak::CodeGenerator *g, Xbyak::rt dst, Xbyak::rt src){expr_t;}, \
kd, false, ot);
#define GEN_throughput_only_rcx_clobber(rt, name, expr_t, kd, ot) \
run_throghput_only<Xbyak::rt>( \
name, \
[](Xbyak::CodeGenerator *g, Xbyak::rt dst, Xbyak::rt src){expr_t;}, \
kd, true, ot);
extern void test_generic();
extern void test_mpx();
extern void test_avx512();
extern void test_avx();
extern void test_sse();
#endif