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r600: tune nir options

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* Don't lower fp64 to software when on Cayman but
* lower fpow only when on native NIR, the TGSI backend handles
  TGSI_OPCODE_POW

Fixes: a4840e15ab
  r600: Use nir-to-tgsi instead of TGSI when the NIR debug opt is disabled.

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16130>
This commit is contained in:
Gert Wollny
2022-04-24 14:25:45 +02:00
committed by Marge Bot
parent 6cb510156e
commit a8430c43a7
1 changed files with 19 additions and 3 deletions
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22
src/gallium/drivers/r600/r600_pipe_common.c
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@@ -1330,13 +1330,10 @@ bool r600_common_screen_init(struct r600_common_screen *rscreen,
.fuse_ffma64 = true,
.lower_flrp32 = true,
.lower_flrp64 = true,
.lower_fpow = true,
.lower_fdiv = true,
.lower_isign = true,
.lower_fsign = true,
.lower_fmod = true,
.lower_doubles_options = nir_lower_fp64_full_software,
.lower_int64_options = ~0,
.lower_extract_byte = true,
.lower_extract_word = true,
.lower_insert_byte = true,
@@ -1362,12 +1359,31 @@ bool r600_common_screen_init(struct r600_common_screen *rscreen,
rscreen->nir_options = nir_options;
/* The TGSI code path handles OPCODE_POW, but has problems with the
* lowered version, the NIT code path does the rightthing with the
* lowered code */
rscreen->nir_options.lower_fpow = rscreen->debug_flags & DBG_NIR_PREFERRED;
if (rscreen->info.chip_class < EVERGREEN) {
/* Pre-EG doesn't have these ALU ops */
rscreen->nir_options.lower_bit_count = true;
rscreen->nir_options.lower_bitfield_reverse = true;
}
if (rscreen->info.chip_class < CAYMAN) {
rscreen->nir_options.lower_doubles_options = nir_lower_fp64_full_software;
rscreen->nir_options.lower_int64_options = ~0;
} else {
rscreen->nir_options.lower_doubles_options =
nir_lower_ddiv |
nir_lower_dfloor |
nir_lower_dceil |
nir_lower_dmod |
nir_lower_dsub |
nir_lower_dtrunc;
rscreen->nir_options.lower_int64_options = ~0;
}
if (!(rscreen->debug_flags & DBG_NIR_PREFERRED)) {
/* TGSI is vector, and NIR-to-TGSI doesn't like it when the
* input vars have been scalarized.