Module: Mesa
Branch: master
Commit: 0a790c3019f24dcf905c1c6245827525a11f2a44
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=0a790c3019f24dcf905c1c6245827525a11f2a44
Author: Rhys Perry <pendingchao...@gmail.com>
Date: Thu Jul 11 15:31:50 2019 +0100
nir/algebraic: add a few masking-before-unpack optimizations
Helps some Dawn of War 3 and F1 2017 shaders with ACO:
Totals from affected shaders:
SGPRS: 2136 -> 2128 (-0.37 %)
VGPRS: 1624 -> 1628 (0.25 %)
Spilled SGPRs: 0 -> 0 (0.00 %)
Spilled VGPRs: 0 -> 0 (0.00 %)
Private memory VGPRs: 0 -> 0 (0.00 %)
Scratch size: 0 -> 0 (0.00 %) dwords per thread
Code Size: 168068 -> 164332 (-2.22 %) bytes
LDS: 44 -> 44 (0.00 %) blocks
Max Waves: 222 -> 221 (-0.45 %)
Wait states: 0 -> 0 (0.00 %)
Signed-off-by: Rhys Perry <pendingchao...@gmail.com>
Reviewed-by: Ian Romanick <ian.d.roman...@intel.com>
Reviewed-by: Eric Anholt <e...@anholt.net>
---
src/compiler/nir/nir_opt_algebraic.py | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/src/compiler/nir/nir_opt_algebraic.py
b/src/compiler/nir/nir_opt_algebraic.py
index 40f718e5ae2..26e2fc346ed 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -882,7 +882,15 @@ optimizations.extend([
(('ishr', 'a@16', 8), ('extract_i8', a, 1),
'!options->lower_extract_byte'),
(('ishr', 'a@32', 24), ('extract_i8', a, 3),
'!options->lower_extract_byte'),
(('ishr', 'a@64', 56), ('extract_i8', a, 7),
'!options->lower_extract_byte'),
- (('iand', 0xff, a), ('extract_u8', a, 0), '!options->lower_extract_byte')
+ (('iand', 0xff, a), ('extract_u8', a, 0), '!options->lower_extract_byte'),
+
+ # Useless masking before unpacking
+ (('unpack_half_2x16_split_x', ('iand', a, 0xffff)),
('unpack_half_2x16_split_x', a)),
+ (('unpack_32_2x16_split_x', ('iand', a, 0xffff)),
('unpack_32_2x16_split_x', a)),
+ (('unpack_64_2x32_split_x', ('iand', a, 0xffffffff)),
('unpack_64_2x32_split_x', a)),
+ (('unpack_half_2x16_split_y', ('iand', a, 0xffff0000)),
('unpack_half_2x16_split_y', a)),
+ (('unpack_32_2x16_split_y', ('iand', a, 0xffff0000)),
('unpack_32_2x16_split_y', a)),
+ (('unpack_64_2x32_split_y', ('iand', a, 0xffffffff00000000)),
('unpack_64_2x32_split_y', a)),
])
# After the ('extract_u8', a, 0) pattern, above, triggers, there will be
_______________________________________________
mesa-commit mailing list
mesa-commit@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/mesa-commit
