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intel/compiler/fs: Don't generate integer DWord multiply on Gen11 

Like CHV et al., Gen11 does not support 32x32 -> 32/64-bit integer
multiplies.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Matt Turner 2017-10-23 10:44:39 -07:00
parent 432674ce93
commit 3a584a15c0
3 changed files with 6 additions and 5 deletions
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4
src/intel/common/gen_device_info.c
View File

@ -382,6 +382,7 @@ static const struct gen_device_info gen_device_info_hsw_gt3 = {
.has_llc = true, \
.has_sample_with_hiz = false, \
.has_pln = true, \
.has_integer_dword_mul = true, \
.has_64bit_types = true, \
.supports_simd16_3src = true, \
.has_surface_tile_offset = true, \
@ -464,6 +465,7 @@ static const struct gen_device_info gen_device_info_bdw_gt3 = {
static const struct gen_device_info gen_device_info_chv = {
GEN8_FEATURES, .is_cherryview = 1, .gt = 1,
.has_llc = false,
.has_integer_dword_mul = false,
.num_slices = 1,
.num_subslices = { 2, },
.num_thread_per_eu = 7,
@ -514,6 +516,7 @@ static const struct gen_device_info gen_device_info_chv = {
#define GEN9_LP_FEATURES \
GEN8_FEATURES, \
GEN9_HW_INFO, \
.has_integer_dword_mul = false, \
.gt = 1, \
.has_llc = false, \
.has_sample_with_hiz = true, \
@ -818,6 +821,7 @@ static const struct gen_device_info gen_device_info_cnl_5x8 = {
GEN8_FEATURES, \
GEN11_HW_INFO, \
.has_64bit_types = false, \
.has_integer_dword_mul = false, \
.gt = _gt, .num_slices = _slices, .l3_banks = _l3, \
.num_subslices = _subslices

1
src/intel/common/gen_device_info.h
View File

@ -60,6 +60,7 @@ struct gen_device_info
bool has_pln;
bool has_64bit_types;
bool has_integer_dword_mul;
bool has_compr4;
bool has_surface_tile_offset;
bool supports_simd16_3src;

6
src/intel/compiler/brw_fs.cpp
View File

@ -3549,11 +3549,7 @@ fs_visitor::lower_integer_multiplication()
inst->dst.type != BRW_REGISTER_TYPE_UD))
continue;
/* Gen8's MUL instruction can do a 32-bit x 32-bit -> 32-bit
* operation directly, but CHV/BXT cannot.
*/
if (devinfo->gen >= 8 &&
!devinfo->is_cherryview && !gen_device_info_is_9lp(devinfo))
if (devinfo->has_integer_dword_mul)
continue;
if (inst->src[1].file == IMM &&