ref: f62805fae0e0dcf5a45ee51d73c416241e3af786
dir: /vpx_dsp/x86/highbd_variance_sse2.c/
/*
* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "./vpx_config.h"
#include "vpx_ports/mem.h"
typedef uint32_t (*high_variance_fn_t) (const uint16_t *src, int src_stride,
const uint16_t *ref, int ref_stride,
uint32_t *sse, int *sum);
uint32_t vpx_highbd_calc8x8var_sse2(const uint16_t *src, int src_stride,
const uint16_t *ref, int ref_stride,
uint32_t *sse, int *sum);
uint32_t vpx_highbd_calc16x16var_sse2(const uint16_t *src, int src_stride,
const uint16_t *ref, int ref_stride,
uint32_t *sse, int *sum);
static void highbd_8_variance_sse2(const uint16_t *src, int src_stride,
const uint16_t *ref, int ref_stride,
int w, int h, uint32_t *sse, int *sum,
high_variance_fn_t var_fn, int block_size) {
int i, j;
*sse = 0;
*sum = 0;
for (i = 0; i < h; i += block_size) {
for (j = 0; j < w; j += block_size) {
unsigned int sse0;
int sum0;
var_fn(src + src_stride * i + j, src_stride,
ref + ref_stride * i + j, ref_stride, &sse0, &sum0);
*sse += sse0;
*sum += sum0;
}
}
}
static void highbd_10_variance_sse2(const uint16_t *src, int src_stride,
const uint16_t *ref, int ref_stride,
int w, int h, uint32_t *sse, int *sum,
high_variance_fn_t var_fn, int block_size) {
int i, j;
uint64_t sse_long = 0;
int32_t sum_long = 0;
for (i = 0; i < h; i += block_size) {
for (j = 0; j < w; j += block_size) {
unsigned int sse0;
int sum0;
var_fn(src + src_stride * i + j, src_stride,
ref + ref_stride * i + j, ref_stride, &sse0, &sum0);
sse_long += sse0;
sum_long += sum0;
}
}
*sum = ROUND_POWER_OF_TWO(sum_long, 2);
*sse = (uint32_t)ROUND_POWER_OF_TWO(sse_long, 4);
}
static void highbd_12_variance_sse2(const uint16_t *src, int src_stride,
const uint16_t *ref, int ref_stride,
int w, int h, uint32_t *sse, int *sum,
high_variance_fn_t var_fn, int block_size) {
int i, j;
uint64_t sse_long = 0;
int32_t sum_long = 0;
for (i = 0; i < h; i += block_size) {
for (j = 0; j < w; j += block_size) {
unsigned int sse0;
int sum0;
var_fn(src + src_stride * i + j, src_stride,
ref + ref_stride * i + j, ref_stride, &sse0, &sum0);
sse_long += sse0;
sum_long += sum0;
}
}
*sum = ROUND_POWER_OF_TWO(sum_long, 4);
*sse = (uint32_t)ROUND_POWER_OF_TWO(sse_long, 8);
}
#define HIGH_GET_VAR(S) \
void vpx_highbd_get##S##x##S##var_sse2(const uint8_t *src8, int src_stride, \
const uint8_t *ref8, int ref_stride, \
uint32_t *sse, int *sum) { \
uint16_t *src = CONVERT_TO_SHORTPTR(src8); \
uint16_t *ref = CONVERT_TO_SHORTPTR(ref8); \
vpx_highbd_calc##S##x##S##var_sse2(src, src_stride, ref, ref_stride, \
sse, sum); \
} \
\
void vpx_highbd_10_get##S##x##S##var_sse2(const uint8_t *src8, int src_stride, \
const uint8_t *ref8, int ref_stride, \
uint32_t *sse, int *sum) { \
uint16_t *src = CONVERT_TO_SHORTPTR(src8); \
uint16_t *ref = CONVERT_TO_SHORTPTR(ref8); \
vpx_highbd_calc##S##x##S##var_sse2(src, src_stride, ref, ref_stride, \
sse, sum); \
*sum = ROUND_POWER_OF_TWO(*sum, 2); \
*sse = ROUND_POWER_OF_TWO(*sse, 4); \
} \
\
void vpx_highbd_12_get##S##x##S##var_sse2(const uint8_t *src8, int src_stride, \
const uint8_t *ref8, int ref_stride, \
uint32_t *sse, int *sum) { \
uint16_t *src = CONVERT_TO_SHORTPTR(src8); \
uint16_t *ref = CONVERT_TO_SHORTPTR(ref8); \
vpx_highbd_calc##S##x##S##var_sse2(src, src_stride, ref, ref_stride, \
sse, sum); \
*sum = ROUND_POWER_OF_TWO(*sum, 4); \
*sse = ROUND_POWER_OF_TWO(*sse, 8); \
}
HIGH_GET_VAR(16);
HIGH_GET_VAR(8);
#undef HIGH_GET_VAR
#define VAR_FN(w, h, block_size, shift) \
uint32_t vpx_highbd_8_variance##w##x##h##_sse2( \
const uint8_t *src8, int src_stride, \
const uint8_t *ref8, int ref_stride, uint32_t *sse) { \
int sum; \
uint16_t *src = CONVERT_TO_SHORTPTR(src8); \
uint16_t *ref = CONVERT_TO_SHORTPTR(ref8); \
highbd_8_variance_sse2(src, src_stride, ref, ref_stride, w, h, sse, &sum, \
vpx_highbd_calc##block_size##x##block_size##var_sse2, \
block_size); \
return *sse - (((int64_t)sum * sum) >> shift); \
} \
\
uint32_t vpx_highbd_10_variance##w##x##h##_sse2( \
const uint8_t *src8, int src_stride, \
const uint8_t *ref8, int ref_stride, uint32_t *sse) { \
int sum; \
uint16_t *src = CONVERT_TO_SHORTPTR(src8); \
uint16_t *ref = CONVERT_TO_SHORTPTR(ref8); \
highbd_10_variance_sse2( \
src, src_stride, ref, ref_stride, w, h, sse, &sum, \
vpx_highbd_calc##block_size##x##block_size##var_sse2, block_size); \
return *sse - (((int64_t)sum * sum) >> shift); \
} \
\
uint32_t vpx_highbd_12_variance##w##x##h##_sse2( \
const uint8_t *src8, int src_stride, \
const uint8_t *ref8, int ref_stride, uint32_t *sse) { \
int sum; \
uint16_t *src = CONVERT_TO_SHORTPTR(src8); \
uint16_t *ref = CONVERT_TO_SHORTPTR(ref8); \
highbd_12_variance_sse2( \
src, src_stride, ref, ref_stride, w, h, sse, &sum, \
vpx_highbd_calc##block_size##x##block_size##var_sse2, block_size); \
return *sse - (((int64_t)sum * sum) >> shift); \
}
VAR_FN(64, 64, 16, 12);
VAR_FN(64, 32, 16, 11);
VAR_FN(32, 64, 16, 11);
VAR_FN(32, 32, 16, 10);
VAR_FN(32, 16, 16, 9);
VAR_FN(16, 32, 16, 9);
VAR_FN(16, 16, 16, 8);
VAR_FN(16, 8, 8, 7);
VAR_FN(8, 16, 8, 7);
VAR_FN(8, 8, 8, 6);
#undef VAR_FN
unsigned int vpx_highbd_8_mse16x16_sse2(const uint8_t *src8, int src_stride,
const uint8_t *ref8, int ref_stride,
unsigned int *sse) {
int sum;
uint16_t *src = CONVERT_TO_SHORTPTR(src8);
uint16_t *ref = CONVERT_TO_SHORTPTR(ref8);
highbd_8_variance_sse2(src, src_stride, ref, ref_stride, 16, 16,
sse, &sum, vpx_highbd_calc16x16var_sse2, 16);
return *sse;
}
unsigned int vpx_highbd_10_mse16x16_sse2(const uint8_t *src8, int src_stride,
const uint8_t *ref8, int ref_stride,
unsigned int *sse) {
int sum;
uint16_t *src = CONVERT_TO_SHORTPTR(src8);
uint16_t *ref = CONVERT_TO_SHORTPTR(ref8);
highbd_10_variance_sse2(src, src_stride, ref, ref_stride, 16, 16,
sse, &sum, vpx_highbd_calc16x16var_sse2, 16);
return *sse;
}
unsigned int vpx_highbd_12_mse16x16_sse2(const uint8_t *src8, int src_stride,
const uint8_t *ref8, int ref_stride,
unsigned int *sse) {
int sum;
uint16_t *src = CONVERT_TO_SHORTPTR(src8);
uint16_t *ref = CONVERT_TO_SHORTPTR(ref8);
highbd_12_variance_sse2(src, src_stride, ref, ref_stride, 16, 16,
sse, &sum, vpx_highbd_calc16x16var_sse2, 16);
return *sse;
}
unsigned int vpx_highbd_8_mse8x8_sse2(const uint8_t *src8, int src_stride,
const uint8_t *ref8, int ref_stride,
unsigned int *sse) {
int sum;
uint16_t *src = CONVERT_TO_SHORTPTR(src8);
uint16_t *ref = CONVERT_TO_SHORTPTR(ref8);
highbd_8_variance_sse2(src, src_stride, ref, ref_stride, 8, 8,
sse, &sum, vpx_highbd_calc8x8var_sse2, 8);
return *sse;
}
unsigned int vpx_highbd_10_mse8x8_sse2(const uint8_t *src8, int src_stride,
const uint8_t *ref8, int ref_stride,
unsigned int *sse) {
int sum;
uint16_t *src = CONVERT_TO_SHORTPTR(src8);
uint16_t *ref = CONVERT_TO_SHORTPTR(ref8);
highbd_10_variance_sse2(src, src_stride, ref, ref_stride, 8, 8,
sse, &sum, vpx_highbd_calc8x8var_sse2, 8);
return *sse;
}
unsigned int vpx_highbd_12_mse8x8_sse2(const uint8_t *src8, int src_stride,
const uint8_t *ref8, int ref_stride,
unsigned int *sse) {
int sum;
uint16_t *src = CONVERT_TO_SHORTPTR(src8);
uint16_t *ref = CONVERT_TO_SHORTPTR(ref8);
highbd_12_variance_sse2(src, src_stride, ref, ref_stride, 8, 8,
sse, &sum, vpx_highbd_calc8x8var_sse2, 8);
return *sse;
}
#if CONFIG_USE_X86INC
#define DECL(w, opt) \
int vpx_highbd_sub_pixel_variance##w##xh_##opt(const uint16_t *src, \
ptrdiff_t src_stride, \
int x_offset, int y_offset, \
const uint16_t *dst, \
ptrdiff_t dst_stride, \
int height, unsigned int *sse);
#define DECLS(opt1, opt2) \
DECL(8, opt1); \
DECL(16, opt1)
DECLS(sse2, sse);
// TODO(johannkoenig): enable the ssse3 or delete
// DECLS(ssse3, ssse3);
#undef DECLS
#undef DECL
#define FN(w, h, wf, wlog2, hlog2, opt, cast) \
uint32_t vpx_highbd_8_sub_pixel_variance##w##x##h##_##opt(const uint8_t *src8, \
int src_stride, \
int x_offset, \
int y_offset, \
const uint8_t *dst8, \
int dst_stride, \
uint32_t *sse_ptr) { \
uint32_t sse; \
uint16_t *src = CONVERT_TO_SHORTPTR(src8); \
uint16_t *dst = CONVERT_TO_SHORTPTR(dst8); \
int se = vpx_highbd_sub_pixel_variance##wf##xh_##opt(src, src_stride, \
x_offset, y_offset, \
dst, dst_stride, h, \
&sse); \
if (w > wf) { \
unsigned int sse2; \
int se2 = vpx_highbd_sub_pixel_variance##wf##xh_##opt(src + 16, \
src_stride, \
x_offset, y_offset, \
dst + 16, \
dst_stride, \
h, &sse2); \
se += se2; \
sse += sse2; \
if (w > wf * 2) { \
se2 = vpx_highbd_sub_pixel_variance##wf##xh_##opt(src + 32, src_stride, \
x_offset, y_offset, \
dst + 32, dst_stride, \
h, &sse2); \
se += se2; \
sse += sse2; \
se2 = vpx_highbd_sub_pixel_variance##wf##xh_##opt( \
src + 48, src_stride, x_offset, y_offset, \
dst + 48, dst_stride, h, &sse2); \
se += se2; \
sse += sse2; \
} \
} \
*sse_ptr = sse; \
return sse - ((cast se * se) >> (wlog2 + hlog2)); \
} \
\
uint32_t vpx_highbd_10_sub_pixel_variance##w##x##h##_##opt( \
const uint8_t *src8, int src_stride, int x_offset, int y_offset, \
const uint8_t *dst8, int dst_stride, uint32_t *sse_ptr) { \
uint32_t sse; \
uint16_t *src = CONVERT_TO_SHORTPTR(src8); \
uint16_t *dst = CONVERT_TO_SHORTPTR(dst8); \
int se = vpx_highbd_sub_pixel_variance##wf##xh_##opt(src, src_stride, \
x_offset, y_offset, \
dst, dst_stride, \
h, &sse); \
if (w > wf) { \
uint32_t sse2; \
int se2 = vpx_highbd_sub_pixel_variance##wf##xh_##opt(src + 16, \
src_stride, \
x_offset, y_offset, \
dst + 16, \
dst_stride, \
h, &sse2); \
se += se2; \
sse += sse2; \
if (w > wf * 2) { \
se2 = vpx_highbd_sub_pixel_variance##wf##xh_##opt(src + 32, src_stride, \
x_offset, y_offset, \
dst + 32, dst_stride, \
h, &sse2); \
se += se2; \
sse += sse2; \
se2 = vpx_highbd_sub_pixel_variance##wf##xh_##opt(src + 48, src_stride, \
x_offset, y_offset, \
dst + 48, dst_stride, \
h, &sse2); \
se += se2; \
sse += sse2; \
} \
} \
se = ROUND_POWER_OF_TWO(se, 2); \
sse = ROUND_POWER_OF_TWO(sse, 4); \
*sse_ptr = sse; \
return sse - ((cast se * se) >> (wlog2 + hlog2)); \
} \
\
uint32_t vpx_highbd_12_sub_pixel_variance##w##x##h##_##opt( \
const uint8_t *src8, int src_stride, int x_offset, int y_offset, \
const uint8_t *dst8, int dst_stride, uint32_t *sse_ptr) { \
int start_row; \
uint32_t sse; \
int se = 0; \
uint64_t long_sse = 0; \
uint16_t *src = CONVERT_TO_SHORTPTR(src8); \
uint16_t *dst = CONVERT_TO_SHORTPTR(dst8); \
for (start_row = 0; start_row < h; start_row +=16) { \
uint32_t sse2; \
int height = h - start_row < 16 ? h - start_row : 16; \
int se2 = vpx_highbd_sub_pixel_variance##wf##xh_##opt( \
src + (start_row * src_stride), src_stride, \
x_offset, y_offset, dst + (start_row * dst_stride), \
dst_stride, height, &sse2); \
se += se2; \
long_sse += sse2; \
if (w > wf) { \
se2 = vpx_highbd_sub_pixel_variance##wf##xh_##opt( \
src + 16 + (start_row * src_stride), src_stride, \
x_offset, y_offset, dst + 16 + (start_row * dst_stride), \
dst_stride, height, &sse2); \
se += se2; \
long_sse += sse2; \
if (w > wf * 2) { \
se2 = vpx_highbd_sub_pixel_variance##wf##xh_##opt( \
src + 32 + (start_row * src_stride), src_stride, \
x_offset, y_offset, dst + 32 + (start_row * dst_stride), \
dst_stride, height, &sse2); \
se += se2; \
long_sse += sse2; \
se2 = vpx_highbd_sub_pixel_variance##wf##xh_##opt( \
src + 48 + (start_row * src_stride), src_stride, \
x_offset, y_offset, dst + 48 + (start_row * dst_stride), \
dst_stride, height, &sse2); \
se += se2; \
long_sse += sse2; \
}\
} \
} \
se = ROUND_POWER_OF_TWO(se, 4); \
sse = (uint32_t)ROUND_POWER_OF_TWO(long_sse, 8); \
*sse_ptr = sse; \
return sse - ((cast se * se) >> (wlog2 + hlog2)); \
}
#define FNS(opt1, opt2) \
FN(64, 64, 16, 6, 6, opt1, (int64_t)); \
FN(64, 32, 16, 6, 5, opt1, (int64_t)); \
FN(32, 64, 16, 5, 6, opt1, (int64_t)); \
FN(32, 32, 16, 5, 5, opt1, (int64_t)); \
FN(32, 16, 16, 5, 4, opt1, (int64_t)); \
FN(16, 32, 16, 4, 5, opt1, (int64_t)); \
FN(16, 16, 16, 4, 4, opt1, (int64_t)); \
FN(16, 8, 16, 4, 3, opt1, (int64_t)); \
FN(8, 16, 8, 3, 4, opt1, (int64_t)); \
FN(8, 8, 8, 3, 3, opt1, (int64_t)); \
FN(8, 4, 8, 3, 2, opt1, (int64_t));
FNS(sse2, sse);
#undef FNS
#undef FN
#define DECL(w, opt) \
int vpx_highbd_sub_pixel_avg_variance##w##xh_##opt(const uint16_t *src, \
ptrdiff_t src_stride, \
int x_offset, int y_offset, \
const uint16_t *dst, \
ptrdiff_t dst_stride, \
const uint16_t *sec, \
ptrdiff_t sec_stride, \
int height, \
unsigned int *sse);
#define DECLS(opt1) \
DECL(16, opt1) \
DECL(8, opt1)
DECLS(sse2);
#undef DECL
#undef DECLS
#define FN(w, h, wf, wlog2, hlog2, opt, cast) \
uint32_t vpx_highbd_8_sub_pixel_avg_variance##w##x##h##_##opt( \
const uint8_t *src8, int src_stride, int x_offset, int y_offset, \
const uint8_t *dst8, int dst_stride, uint32_t *sse_ptr, \
const uint8_t *sec8) { \
uint32_t sse; \
uint16_t *src = CONVERT_TO_SHORTPTR(src8); \
uint16_t *dst = CONVERT_TO_SHORTPTR(dst8); \
uint16_t *sec = CONVERT_TO_SHORTPTR(sec8); \
int se = vpx_highbd_sub_pixel_avg_variance##wf##xh_##opt( \
src, src_stride, x_offset, \
y_offset, dst, dst_stride, sec, w, h, &sse); \
if (w > wf) { \
uint32_t sse2; \
int se2 = vpx_highbd_sub_pixel_avg_variance##wf##xh_##opt( \
src + 16, src_stride, x_offset, y_offset, \
dst + 16, dst_stride, sec + 16, w, h, &sse2); \
se += se2; \
sse += sse2; \
if (w > wf * 2) { \
se2 = vpx_highbd_sub_pixel_avg_variance##wf##xh_##opt( \
src + 32, src_stride, x_offset, y_offset, \
dst + 32, dst_stride, sec + 32, w, h, &sse2); \
se += se2; \
sse += sse2; \
se2 = vpx_highbd_sub_pixel_avg_variance##wf##xh_##opt( \
src + 48, src_stride, x_offset, y_offset, \
dst + 48, dst_stride, sec + 48, w, h, &sse2); \
se += se2; \
sse += sse2; \
} \
} \
*sse_ptr = sse; \
return sse - ((cast se * se) >> (wlog2 + hlog2)); \
} \
\
uint32_t vpx_highbd_10_sub_pixel_avg_variance##w##x##h##_##opt( \
const uint8_t *src8, int src_stride, int x_offset, int y_offset, \
const uint8_t *dst8, int dst_stride, uint32_t *sse_ptr, \
const uint8_t *sec8) { \
uint32_t sse; \
uint16_t *src = CONVERT_TO_SHORTPTR(src8); \
uint16_t *dst = CONVERT_TO_SHORTPTR(dst8); \
uint16_t *sec = CONVERT_TO_SHORTPTR(sec8); \
int se = vpx_highbd_sub_pixel_avg_variance##wf##xh_##opt( \
src, src_stride, x_offset, \
y_offset, dst, dst_stride, \
sec, w, h, &sse); \
if (w > wf) { \
uint32_t sse2; \
int se2 = vpx_highbd_sub_pixel_avg_variance##wf##xh_##opt( \
src + 16, src_stride, \
x_offset, y_offset, \
dst + 16, dst_stride, \
sec + 16, w, h, &sse2); \
se += se2; \
sse += sse2; \
if (w > wf * 2) { \
se2 = vpx_highbd_sub_pixel_avg_variance##wf##xh_##opt( \
src + 32, src_stride, \
x_offset, y_offset, \
dst + 32, dst_stride, \
sec + 32, w, h, &sse2); \
se += se2; \
sse += sse2; \
se2 = vpx_highbd_sub_pixel_avg_variance##wf##xh_##opt( \
src + 48, src_stride, \
x_offset, y_offset, \
dst + 48, dst_stride, \
sec + 48, w, h, &sse2); \
se += se2; \
sse += sse2; \
} \
} \
se = ROUND_POWER_OF_TWO(se, 2); \
sse = ROUND_POWER_OF_TWO(sse, 4); \
*sse_ptr = sse; \
return sse - ((cast se * se) >> (wlog2 + hlog2)); \
} \
\
uint32_t vpx_highbd_12_sub_pixel_avg_variance##w##x##h##_##opt( \
const uint8_t *src8, int src_stride, int x_offset, int y_offset, \
const uint8_t *dst8, int dst_stride, uint32_t *sse_ptr, \
const uint8_t *sec8) { \
int start_row; \
uint32_t sse; \
int se = 0; \
uint64_t long_sse = 0; \
uint16_t *src = CONVERT_TO_SHORTPTR(src8); \
uint16_t *dst = CONVERT_TO_SHORTPTR(dst8); \
uint16_t *sec = CONVERT_TO_SHORTPTR(sec8); \
for (start_row = 0; start_row < h; start_row +=16) { \
uint32_t sse2; \
int height = h - start_row < 16 ? h - start_row : 16; \
int se2 = vpx_highbd_sub_pixel_avg_variance##wf##xh_##opt( \
src + (start_row * src_stride), src_stride, x_offset, \
y_offset, dst + (start_row * dst_stride), dst_stride, \
sec + (start_row * w), w, height, &sse2); \
se += se2; \
long_sse += sse2; \
if (w > wf) { \
se2 = vpx_highbd_sub_pixel_avg_variance##wf##xh_##opt( \
src + 16 + (start_row * src_stride), src_stride, \
x_offset, y_offset, \
dst + 16 + (start_row * dst_stride), dst_stride, \
sec + 16 + (start_row * w), w, height, &sse2); \
se += se2; \
long_sse += sse2; \
if (w > wf * 2) { \
se2 = vpx_highbd_sub_pixel_avg_variance##wf##xh_##opt( \
src + 32 + (start_row * src_stride), src_stride, \
x_offset, y_offset, \
dst + 32 + (start_row * dst_stride), dst_stride, \
sec + 32 + (start_row * w), w, height, &sse2); \
se += se2; \
long_sse += sse2; \
se2 = vpx_highbd_sub_pixel_avg_variance##wf##xh_##opt( \
src + 48 + (start_row * src_stride), src_stride, \
x_offset, y_offset, \
dst + 48 + (start_row * dst_stride), dst_stride, \
sec + 48 + (start_row * w), w, height, &sse2); \
se += se2; \
long_sse += sse2; \
} \
} \
} \
se = ROUND_POWER_OF_TWO(se, 4); \
sse = (uint32_t)ROUND_POWER_OF_TWO(long_sse, 8); \
*sse_ptr = sse; \
return sse - ((cast se * se) >> (wlog2 + hlog2)); \
}
#define FNS(opt1) \
FN(64, 64, 16, 6, 6, opt1, (int64_t)); \
FN(64, 32, 16, 6, 5, opt1, (int64_t)); \
FN(32, 64, 16, 5, 6, opt1, (int64_t)); \
FN(32, 32, 16, 5, 5, opt1, (int64_t)); \
FN(32, 16, 16, 5, 4, opt1, (int64_t)); \
FN(16, 32, 16, 4, 5, opt1, (int64_t)); \
FN(16, 16, 16, 4, 4, opt1, (int64_t)); \
FN(16, 8, 16, 4, 3, opt1, (int64_t)); \
FN(8, 16, 8, 4, 3, opt1, (int64_t)); \
FN(8, 8, 8, 3, 3, opt1, (int64_t)); \
FN(8, 4, 8, 3, 2, opt1, (int64_t));
FNS(sse2);
#undef FNS
#undef FN
#endif // CONFIG_USE_X86INC