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i965/fs: add support for shader float control to remove_extra_rounding_modes()

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The remove_extra_rounding_modes() optimization will remove duplicated
rounding mode changes.

v2:
- Fix bug in the rounding mode change (Alejandro).

v3:
- Fix rounding modes.

v4:
- Updated to renamed shader info member and enum values (Andres).

v5:
- Simplify flags logic operations (Caio).

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Signed-off-by: Andres Gomez <agomez@igalia.com>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
This commit is contained in:
Samuel Iglesias Gonsálvez 2018-11-19 12:38:10 +01:00 committed by Andres Gomez
parent 9bd88d10d8
commit 9b07020a4f
1 changed files with 14 additions and 1 deletions
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15
src/intel/compiler/brw_fs.cpp
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@ -3531,9 +3531,22 @@ bool
fs_visitor::remove_extra_rounding_modes()
{
bool progress = false;
unsigned execution_mode = this->nir->info.float_controls_execution_mode;
brw_rnd_mode base_mode = BRW_RND_MODE_UNSPECIFIED;
if ((FLOAT_CONTROLS_ROUNDING_MODE_RTE_FP16 |
FLOAT_CONTROLS_ROUNDING_MODE_RTE_FP32 |
FLOAT_CONTROLS_ROUNDING_MODE_RTE_FP64) &
execution_mode)
base_mode = BRW_RND_MODE_RTNE;
if ((FLOAT_CONTROLS_ROUNDING_MODE_RTZ_FP16 |
FLOAT_CONTROLS_ROUNDING_MODE_RTZ_FP32 |
FLOAT_CONTROLS_ROUNDING_MODE_RTZ_FP64) &
execution_mode)
base_mode = BRW_RND_MODE_RTZ;
foreach_block (block, cfg) {
brw_rnd_mode prev_mode = BRW_RND_MODE_UNSPECIFIED;
brw_rnd_mode prev_mode = base_mode;
foreach_inst_in_block_safe (fs_inst, inst, block) {
if (inst->opcode == SHADER_OPCODE_RND_MODE) {