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i965: Add align1 ternary instruction disassembler support

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Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>
This commit is contained in:
Matt Turner
2017-06-14 16:04:07 -07:00
parent 6c7fc9b73a
commit f11fa5ac6c
2 changed files with 288 additions and 75 deletions
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352
src/intel/compiler/brw_disasm.c
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@@ -30,6 +30,7 @@
#include "brw_reg.h"
#include "brw_inst.h"
#include "brw_eu.h"
#include "util/half_float.h"
static bool
has_jip(const struct gen_device_info *devinfo, enum opcode opcode)
@@ -237,13 +238,6 @@ static const char *const access_mode[2] = {
[1] = "align16",
};
static const char *const three_source_reg_encoding[] = {
[BRW_3SRC_TYPE_F] = "F",
[BRW_3SRC_TYPE_D] = "D",
[BRW_3SRC_TYPE_UD] = "UD",
[BRW_3SRC_TYPE_DF] = "DF",
};
static const char *const reg_file[4] = {
[0] = "A",
[1] = "g",
@@ -762,14 +756,15 @@ dest(FILE *file, const struct gen_device_info *devinfo, const brw_inst *inst)
static int
dest_3src(FILE *file, const struct gen_device_info *devinfo, const brw_inst *inst)
{
bool is_align1 = brw_inst_3src_access_mode(devinfo, inst) == BRW_ALIGN_1;
int err = 0;
uint32_t reg_file;
enum brw_reg_type type = brw_inst_3src_a16_dst_type(devinfo, inst);
unsigned dst_subreg_nr =
brw_inst_3src_a16_dst_subreg_nr(devinfo, inst) * 4 /
brw_reg_type_to_size(type);
unsigned subreg_nr;
enum brw_reg_type type;
if (devinfo->gen == 6 && brw_inst_3src_a16_dst_reg_file(devinfo, inst))
if (is_align1 && brw_inst_3src_a1_dst_reg_file(devinfo, inst))
reg_file = BRW_ARCHITECTURE_REGISTER_FILE;
else if (devinfo->gen == 6 && brw_inst_3src_a16_dst_reg_file(devinfo, inst))
reg_file = BRW_MESSAGE_REGISTER_FILE;
else
reg_file = BRW_GENERAL_REGISTER_FILE;
@@ -777,13 +772,25 @@ dest_3src(FILE *file, const struct gen_device_info *devinfo, const brw_inst *ins
err |= reg(file, reg_file, brw_inst_3src_dst_reg_nr(devinfo, inst));
if (err == -1)
return 0;
if (dst_subreg_nr)
format(file, ".%u", dst_subreg_nr);
if (is_align1) {
type = brw_inst_3src_a1_dst_type(devinfo, inst);
subreg_nr = brw_inst_3src_a1_dst_subreg_nr(devinfo, inst);
} else {
type = brw_inst_3src_a16_dst_type(devinfo, inst);
subreg_nr = brw_inst_3src_a16_dst_subreg_nr(devinfo, inst) * 4;
}
subreg_nr /= brw_reg_type_to_size(type);
if (subreg_nr)
format(file, ".%u", subreg_nr);
string(file, "<1>");
err |= control(file, "writemask", writemask,
brw_inst_3src_a16_dst_writemask(devinfo, inst), NULL);
err |= control(file, "dest reg encoding", three_source_reg_encoding,
brw_inst_3src_a16_dst_hw_type(devinfo, inst), NULL);
if (!is_align1) {
err |= control(file, "writemask", writemask,
brw_inst_3src_a16_dst_writemask(devinfo, inst), NULL);
}
string(file, brw_reg_type_to_letters(type));
return 0;
}
@@ -928,33 +935,161 @@ src_da16(FILE *file,
return err;
}
static enum brw_vertical_stride
vstride_from_align1_3src_vstride(enum gen10_align1_3src_vertical_stride vstride)
{
switch (vstride) {
case BRW_ALIGN1_3SRC_VERTICAL_STRIDE_0: return BRW_VERTICAL_STRIDE_0;
case BRW_ALIGN1_3SRC_VERTICAL_STRIDE_2: return BRW_VERTICAL_STRIDE_2;
case BRW_ALIGN1_3SRC_VERTICAL_STRIDE_4: return BRW_VERTICAL_STRIDE_4;
case BRW_ALIGN1_3SRC_VERTICAL_STRIDE_8: return BRW_VERTICAL_STRIDE_8;
default:
unreachable("not reached");
}
}
static enum brw_horizontal_stride
hstride_from_align1_3src_hstride(enum gen10_align1_3src_src_horizontal_stride hstride)
{
switch (hstride) {
case BRW_ALIGN1_3SRC_SRC_HORIZONTAL_STRIDE_0: return BRW_HORIZONTAL_STRIDE_0;
case BRW_ALIGN1_3SRC_SRC_HORIZONTAL_STRIDE_1: return BRW_HORIZONTAL_STRIDE_1;
case BRW_ALIGN1_3SRC_SRC_HORIZONTAL_STRIDE_2: return BRW_HORIZONTAL_STRIDE_2;
case BRW_ALIGN1_3SRC_SRC_HORIZONTAL_STRIDE_4: return BRW_HORIZONTAL_STRIDE_4;
default:
unreachable("not reached");
}
}
static enum brw_vertical_stride
vstride_from_align1_3src_hstride(enum gen10_align1_3src_src_horizontal_stride hstride)
{
switch (hstride) {
case BRW_ALIGN1_3SRC_SRC_HORIZONTAL_STRIDE_0: return BRW_VERTICAL_STRIDE_0;
case BRW_ALIGN1_3SRC_SRC_HORIZONTAL_STRIDE_1: return BRW_VERTICAL_STRIDE_1;
case BRW_ALIGN1_3SRC_SRC_HORIZONTAL_STRIDE_2: return BRW_VERTICAL_STRIDE_2;
case BRW_ALIGN1_3SRC_SRC_HORIZONTAL_STRIDE_4: return BRW_VERTICAL_STRIDE_4;
default:
unreachable("not reached");
}
}
/* From "GEN10 Regioning Rules for Align1 Ternary Operations" in the
* "Register Region Restrictions" documentation
*/
static enum brw_width
implied_width(enum brw_vertical_stride _vert_stride,
enum brw_horizontal_stride _horiz_stride)
{
/* "1. Width is 1 when Vertical and Horizontal Strides are both zero." */
if (_vert_stride == BRW_VERTICAL_STRIDE_0 &&
_horiz_stride == BRW_HORIZONTAL_STRIDE_0) {
return BRW_WIDTH_1;
/* "2. Width is equal to vertical stride when Horizontal Stride is zero." */
} else if (_horiz_stride == BRW_HORIZONTAL_STRIDE_0) {
switch (_vert_stride) {
case BRW_VERTICAL_STRIDE_2: return BRW_WIDTH_2;
case BRW_VERTICAL_STRIDE_4: return BRW_WIDTH_4;
case BRW_VERTICAL_STRIDE_8: return BRW_WIDTH_8;
case BRW_VERTICAL_STRIDE_0:
default:
unreachable("not reached");
}
} else {
/* FINISHME: Implement these: */
/* "3. Width is equal to Vertical Stride/Horizontal Stride when both
* Strides are non-zero.
*
* 4. Vertical Stride must not be zero if Horizontal Stride is non-zero.
* This implies Vertical Stride is always greater than Horizontal
* Stride."
*
* Given these statements and the knowledge that the stride and width
* values are encoded in logarithmic form, we can perform the division
* by just subtracting.
*/
return _vert_stride - _horiz_stride;
}
}
static int
src0_3src(FILE *file, const struct gen_device_info *devinfo, const brw_inst *inst)
{
int err = 0;
enum brw_reg_type type = brw_inst_3src_a16_src_type(devinfo, inst);
unsigned src0_subreg_nr =
brw_inst_3src_a16_src0_subreg_nr(devinfo, inst) * 4 /
brw_reg_type_to_size(type);
unsigned reg_nr, subreg_nr;
enum brw_reg_file _file;
enum brw_reg_type type;
enum brw_vertical_stride _vert_stride;
enum brw_width _width;
enum brw_horizontal_stride _horiz_stride;
bool is_scalar_region;
bool is_align1 = brw_inst_3src_access_mode(devinfo, inst) == BRW_ALIGN_1;
if (is_align1) {
if (brw_inst_3src_a1_src0_reg_file(devinfo, inst) ==
BRW_ALIGN1_3SRC_GENERAL_REGISTER_FILE) {
_file = BRW_GENERAL_REGISTER_FILE;
reg_nr = brw_inst_3src_src0_reg_nr(devinfo, inst);
subreg_nr = brw_inst_3src_a1_src0_subreg_nr(devinfo, inst);
type = brw_inst_3src_a1_src0_type(devinfo, inst);
} else {
_file = BRW_IMMEDIATE_VALUE;
uint16_t imm_val = brw_inst_3src_a1_src0_imm(devinfo, inst);
enum brw_reg_type type = brw_inst_3src_a1_src0_type(devinfo, inst);
if (type == BRW_REGISTER_TYPE_W) {
format(file, "%dW", imm_val);
} else if (type == BRW_REGISTER_TYPE_UW) {
format(file, "0x%04xUW", imm_val);
} else if (type == BRW_REGISTER_TYPE_HF) {
format(file, "%-gF", _mesa_half_to_float(imm_val));
}
return 0;
}
_vert_stride = vstride_from_align1_3src_vstride(
brw_inst_3src_a1_src0_vstride(devinfo, inst));
_horiz_stride = hstride_from_align1_3src_hstride(
brw_inst_3src_a1_src0_hstride(devinfo, inst));
_width = implied_width(_vert_stride, _horiz_stride);
} else {
_file = BRW_GENERAL_REGISTER_FILE;
reg_nr = brw_inst_3src_src0_reg_nr(devinfo, inst);
subreg_nr = brw_inst_3src_a16_src0_subreg_nr(devinfo, inst) * 4;
type = brw_inst_3src_a16_src_type(devinfo, inst);
if (brw_inst_3src_a16_src0_rep_ctrl(devinfo, inst)) {
_vert_stride = BRW_VERTICAL_STRIDE_0;
_width = BRW_WIDTH_1;
_horiz_stride = BRW_HORIZONTAL_STRIDE_0;
} else {
_vert_stride = BRW_VERTICAL_STRIDE_4;
_width = BRW_WIDTH_4;
_horiz_stride = BRW_HORIZONTAL_STRIDE_1;
}
}
is_scalar_region = _vert_stride == BRW_VERTICAL_STRIDE_0 &&
_width == BRW_WIDTH_1 &&
_horiz_stride == BRW_HORIZONTAL_STRIDE_0;
subreg_nr /= brw_reg_type_to_size(type);
err |= control(file, "negate", m_negate,
brw_inst_3src_src0_negate(devinfo, inst), NULL);
err |= control(file, "abs", _abs, brw_inst_3src_src0_abs(devinfo, inst), NULL);
err |= reg(file, BRW_GENERAL_REGISTER_FILE,
brw_inst_3src_src0_reg_nr(devinfo, inst));
err |= reg(file, _file, reg_nr);
if (err == -1)
return 0;
if (src0_subreg_nr || brw_inst_3src_a16_src0_rep_ctrl(devinfo, inst))
format(file, ".%d", src0_subreg_nr);
if (brw_inst_3src_a16_src0_rep_ctrl(devinfo, inst))
string(file, "<0,1,0>");
else {
string(file, "<4,4,1>");
if (subreg_nr || is_scalar_region)
format(file, ".%d", subreg_nr);
src_align1_region(file, _vert_stride, _width, _horiz_stride);
if (!is_scalar_region && !is_align1)
err |= src_swizzle(file, brw_inst_3src_a16_src0_swizzle(devinfo, inst));
}
err |= control(file, "src da16 reg type", three_source_reg_encoding,
brw_inst_3src_a16_src_hw_type(devinfo, inst), NULL);
string(file, brw_reg_type_to_letters(type));
return err;
}
@@ -962,60 +1097,149 @@ static int
src1_3src(FILE *file, const struct gen_device_info *devinfo, const brw_inst *inst)
{
int err = 0;
enum brw_reg_type type = brw_inst_3src_a16_src_type(devinfo, inst);
unsigned src1_subreg_nr =
brw_inst_3src_a16_src1_subreg_nr(devinfo, inst) * 4 /
brw_reg_type_to_size(type);
unsigned reg_nr, subreg_nr;
enum brw_reg_file _file;
enum brw_reg_type type;
enum brw_vertical_stride _vert_stride;
enum brw_width _width;
enum brw_horizontal_stride _horiz_stride;
bool is_scalar_region;
bool is_align1 = brw_inst_3src_access_mode(devinfo, inst) == BRW_ALIGN_1;
if (is_align1) {
if (brw_inst_3src_a1_src1_reg_file(devinfo, inst) ==
BRW_ALIGN1_3SRC_GENERAL_REGISTER_FILE) {
_file = BRW_GENERAL_REGISTER_FILE;
} else {
_file = BRW_ARCHITECTURE_REGISTER_FILE;
}
reg_nr = brw_inst_3src_src1_reg_nr(devinfo, inst);
subreg_nr = brw_inst_3src_a1_src1_subreg_nr(devinfo, inst);
type = brw_inst_3src_a1_src1_type(devinfo, inst);
_vert_stride = vstride_from_align1_3src_vstride(
brw_inst_3src_a1_src1_vstride(devinfo, inst));
_horiz_stride = hstride_from_align1_3src_hstride(
brw_inst_3src_a1_src1_hstride(devinfo, inst));
_width = implied_width(_vert_stride, _horiz_stride);
} else {
_file = BRW_GENERAL_REGISTER_FILE;
reg_nr = brw_inst_3src_src1_reg_nr(devinfo, inst);
subreg_nr = brw_inst_3src_a16_src1_subreg_nr(devinfo, inst) * 4;
type = brw_inst_3src_a16_src_type(devinfo, inst);
if (brw_inst_3src_a16_src1_rep_ctrl(devinfo, inst)) {
_vert_stride = BRW_VERTICAL_STRIDE_0;
_width = BRW_WIDTH_1;
_horiz_stride = BRW_HORIZONTAL_STRIDE_0;
} else {
_vert_stride = BRW_VERTICAL_STRIDE_4;
_width = BRW_WIDTH_4;
_horiz_stride = BRW_HORIZONTAL_STRIDE_1;
}
}
is_scalar_region = _vert_stride == BRW_VERTICAL_STRIDE_0 &&
_width == BRW_WIDTH_1 &&
_horiz_stride == BRW_HORIZONTAL_STRIDE_0;
subreg_nr /= brw_reg_type_to_size(type);
err |= control(file, "negate", m_negate,
brw_inst_3src_src1_negate(devinfo, inst), NULL);
err |= control(file, "abs", _abs, brw_inst_3src_src1_abs(devinfo, inst), NULL);
err |= reg(file, BRW_GENERAL_REGISTER_FILE,
brw_inst_3src_src1_reg_nr(devinfo, inst));
err |= reg(file, _file, reg_nr);
if (err == -1)
return 0;
if (src1_subreg_nr || brw_inst_3src_a16_src1_rep_ctrl(devinfo, inst))
format(file, ".%d", src1_subreg_nr);
if (brw_inst_3src_a16_src1_rep_ctrl(devinfo, inst))
string(file, "<0,1,0>");
else {
string(file, "<4,4,1>");
if (subreg_nr || is_scalar_region)
format(file, ".%d", subreg_nr);
src_align1_region(file, _vert_stride, _width, _horiz_stride);
if (!is_scalar_region && !is_align1)
err |= src_swizzle(file, brw_inst_3src_a16_src1_swizzle(devinfo, inst));
}
err |= control(file, "src da16 reg type", three_source_reg_encoding,
brw_inst_3src_a16_src_hw_type(devinfo, inst), NULL);
string(file, brw_reg_type_to_letters(type));
return err;
}
static int
src2_3src(FILE *file, const struct gen_device_info *devinfo, const brw_inst *inst)
{
int err = 0;
enum brw_reg_type type = brw_inst_3src_a16_src_type(devinfo, inst);
unsigned src2_subreg_nr =
brw_inst_3src_a16_src2_subreg_nr(devinfo, inst) * 4 /
brw_reg_type_to_size(type);
unsigned reg_nr, subreg_nr;
enum brw_reg_file _file;
enum brw_reg_type type;
enum brw_vertical_stride _vert_stride;
enum brw_width _width;
enum brw_horizontal_stride _horiz_stride;
bool is_scalar_region;
bool is_align1 = brw_inst_3src_access_mode(devinfo, inst) == BRW_ALIGN_1;
if (is_align1) {
if (brw_inst_3src_a1_src2_reg_file(devinfo, inst) ==
BRW_ALIGN1_3SRC_GENERAL_REGISTER_FILE) {
_file = BRW_GENERAL_REGISTER_FILE;
reg_nr = brw_inst_3src_src2_reg_nr(devinfo, inst);
subreg_nr = brw_inst_3src_a1_src2_subreg_nr(devinfo, inst);
type = brw_inst_3src_a1_src2_type(devinfo, inst);
} else {
_file = BRW_IMMEDIATE_VALUE;
uint16_t imm_val = brw_inst_3src_a1_src2_imm(devinfo, inst);
enum brw_reg_type type = brw_inst_3src_a1_src2_type(devinfo, inst);
if (type == BRW_REGISTER_TYPE_W) {
format(file, "%dW", imm_val);
} else if (type == BRW_REGISTER_TYPE_UW) {
format(file, "0x%04xUW", imm_val);
} else if (type == BRW_REGISTER_TYPE_HF) {
format(file, "%-gF", _mesa_half_to_float(imm_val));
}
return 0;
}
/* FINISHME: No vertical stride on src2. Is using the hstride in place
* correct? Doesn't seem like it, since there's hstride=1 but
* no vstride=1.
*/
_vert_stride = vstride_from_align1_3src_hstride(
brw_inst_3src_a1_src2_hstride(devinfo, inst));
_horiz_stride = hstride_from_align1_3src_hstride(
brw_inst_3src_a1_src2_hstride(devinfo, inst));
_width = implied_width(_vert_stride, _horiz_stride);
} else {
_file = BRW_GENERAL_REGISTER_FILE;
reg_nr = brw_inst_3src_src2_reg_nr(devinfo, inst);
subreg_nr = brw_inst_3src_a16_src2_subreg_nr(devinfo, inst) * 4;
type = brw_inst_3src_a16_src_type(devinfo, inst);
if (brw_inst_3src_a16_src2_rep_ctrl(devinfo, inst)) {
_vert_stride = BRW_VERTICAL_STRIDE_0;
_width = BRW_WIDTH_1;
_horiz_stride = BRW_HORIZONTAL_STRIDE_0;
} else {
_vert_stride = BRW_VERTICAL_STRIDE_4;
_width = BRW_WIDTH_4;
_horiz_stride = BRW_HORIZONTAL_STRIDE_1;
}
}
is_scalar_region = _vert_stride == BRW_VERTICAL_STRIDE_0 &&
_width == BRW_WIDTH_1 &&
_horiz_stride == BRW_HORIZONTAL_STRIDE_0;
subreg_nr /= brw_reg_type_to_size(type);
err |= control(file, "negate", m_negate,
brw_inst_3src_src2_negate(devinfo, inst), NULL);
err |= control(file, "abs", _abs, brw_inst_3src_src2_abs(devinfo, inst), NULL);
err |= reg(file, BRW_GENERAL_REGISTER_FILE,
brw_inst_3src_src2_reg_nr(devinfo, inst));
err |= reg(file, _file, reg_nr);
if (err == -1)
return 0;
if (src2_subreg_nr || brw_inst_3src_a16_src2_rep_ctrl(devinfo, inst))
format(file, ".%d", src2_subreg_nr);
if (brw_inst_3src_a16_src2_rep_ctrl(devinfo, inst))
string(file, "<0,1,0>");
else {
string(file, "<4,4,1>");
if (subreg_nr || is_scalar_region)
format(file, ".%d", subreg_nr);
src_align1_region(file, _vert_stride, _width, _horiz_stride);
if (!is_scalar_region && !is_align1)
err |= src_swizzle(file, brw_inst_3src_a16_src2_swizzle(devinfo, inst));
}
err |= control(file, "src da16 reg type", three_source_reg_encoding,
brw_inst_3src_a16_src_hw_type(devinfo, inst), NULL);
string(file, brw_reg_type_to_letters(type));
return err;
}