diff options
| author | Timur Kristóf <timur.kristof@gmail.com> | 2023-01-22 19:50:46 +0100 |
|---|---|---|
| committer | Timur Kristóf <timur.kristof@gmail.com> | 2023-02-18 21:16:58 +0100 |
| commit | 2c40215ab9d20890efb88e7b3e26ca909d7fd74b (patch) | |
| tree | d9145f2ece46d97ca33810b58efa39f698613581 /src/amd/compiler/aco_ir.h | |
| parent | 616d595d18d54c8e39e64386a5a2ac2be8e5fef9 (diff) | |
| download | mesa-2c40215ab9d20890efb88e7b3e26ca909d7fd74b.tar.gz | |
aco/optimizer: Change v_cmp with subgroup invocation to constant.
When a shader has a comparison with the subgroup invocation id,
we can use a constant instead, saving a VALU instruction.
When the constant can't be represented as a 64-bit literal,
use the s_bfm_b64 instruction to generate it instead, which
is still a win.
Fossil DB stats on GFX11:
Totals from 300 (0.22% of 134913) affected shaders:
CodeSize: 2223052 -> 2214336 (-0.39%); split: -0.43%, +0.04%
Instrs: 430216 -> 429882 (-0.08%); split: -0.14%, +0.06%
Latency: 5881180 -> 5878181 (-0.05%); split: -0.05%, +0.00%
InvThroughput: 731846 -> 729293 (-0.35%)
Copies: 31662 -> 31847 (+0.58%); split: -0.03%, +0.61%
Branches: 8241 -> 8100 (-1.71%)
PreVGPRs: 15788 -> 15786 (-0.01%)
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20843>
Diffstat (limited to 'src/amd/compiler/aco_ir.h')
| -rw-r--r-- | src/amd/compiler/aco_ir.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/amd/compiler/aco_ir.h b/src/amd/compiler/aco_ir.h index d31e53ad300..f57ba4a9268 100644 --- a/src/amd/compiler/aco_ir.h +++ b/src/amd/compiler/aco_ir.h @@ -1883,6 +1883,7 @@ bool needs_exec_mask(const Instruction* instr); aco_opcode get_ordered(aco_opcode op); aco_opcode get_unordered(aco_opcode op); aco_opcode get_inverse(aco_opcode op); +aco_opcode get_swapped(aco_opcode op); aco_opcode get_f32_cmp(aco_opcode op); aco_opcode get_vcmpx(aco_opcode op); unsigned get_cmp_bitsize(aco_opcode op); |