Mesa (main): intel/fs: Enable b2f(inot(a)) and b2i(inot(a)) optimization for Gfx12+

[GitLab Mirror]

Module: Mesa
Branch: main
Commit: 9c7e750ffe373f5fe91269e112e8a2fe2cc3b8f2
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=9c7e750ffe373f5fe91269e112e8a2fe2cc3b8f2

Author: Mykhailo Skorokhodov <mykhailo.skorokhodov at globallogic.com>
Date:   Thu Dec  2 10:33:05 2021 +0200

intel/fs: Enable b2f(inot(a)) and b2i(inot(a)) optimization for Gfx12+

The commit enables the optimization for Intel Gfx12+ graphics.

Tigerlake
```
total instructions in shared programs: 1289326 -> 1289015 (-0.02%)
instructions in affected programs: 37841 -> 37530 (-0.82%)
helped: 78
HURT: 9
helped stats (abs) min: 1 max: 26 x̄: 4.69 x̃: 3
helped stats (rel) min: 0.10% max: 12.50% x̄: 2.07% x̃: 1.21%
HURT stats (abs)   min: 1 max: 18 x̄: 6.11 x̃: 4
HURT stats (rel)   min: 0.16% max: 1.95% x̄: 0.94% x̃: 0.61%
95% mean confidence interval for instructions value: -4.95 -2.20
95% mean confidence interval for instructions %-change: -2.34% -1.18%
Instructions are helped.

total cycles in shared programs: 105606388 -> 105606442 (<.01%)
cycles in affected programs: 620119 -> 620173 (<.01%)
helped: 49
HURT: 28
helped stats (abs) min: 2 max: 3618 x̄: 228.63 x̃: 12
helped stats (rel) min: 0.02% max: 23.31% x̄: 4.60% x̃: 1.11%
HURT stats (abs)   min: 1 max: 2142 x̄: 402.04 x̃: 29
HURT stats (rel)   min: 0.01% max: 36.42% x̄: 5.01% x̃: 0.46%
95% mean confidence interval for cycles value: -151.80 153.20
95% mean confidence interval for cycles %-change: -3.00% 0.79%
Inconclusive result (value mean confidence interval includes 0).
```

Related-to: https://gitlab.freedesktop.org/mesa/mesa/-/commit/7725d609387a8165ccb71e2d9e0221d9248b1729
Signed-off-by: Mykhailo Skorokhodov <mykhailo.skorokhodov at globallogic.com>
Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14017>

---

 src/intel/compiler/brw_fs_nir.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/intel/compiler/brw_fs_nir.cpp b/src/intel/compiler/brw_fs_nir.cpp
index bd9a406faeb..ae2565a6245 100644
--- a/src/intel/compiler/brw_fs_nir.cpp
+++ b/src/intel/compiler/brw_fs_nir.cpp
@@ -777,7 +777,7 @@ fs_visitor::try_emit_b2fi_of_inot(const fs_builder &bld,
                                   fs_reg result,
                                   nir_alu_instr *instr)
 {
-   if (devinfo->ver < 6 || devinfo->ver >= 12)
+   if (devinfo->ver < 6 || devinfo->verx10 >= 125)
       return false;
 
    nir_alu_instr *inot_instr = nir_src_as_alu_instr(instr->src[0].src);