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3235a942c1
This will be used to help find the trip count of loops that look
like the following:
while (a < x && i < 8) {
...
i++;
}
Where the NIR will end up looking something like this:
vec1 32 ssa_1 = load_const (0x00000004 /* 0.000000 */)
loop {
...
vec1 1 ssa_12 = ilt ssa_225, ssa_11
vec1 1 ssa_17 = ilt ssa_226, ssa_1
vec1 1 ssa_18 = iand ssa_12, ssa_17
vec1 1 ssa_19 = inot ssa_18
if ssa_19 {
...
break
} else {
...
}
}
On RADV this unrolls a bunch of loops in F1-2017 shaders.
Totals from affected shaders:
SGPRS: 4112 -> 4136 (0.58 %)
VGPRS: 4132 -> 4052 (-1.94 %)
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: 515444 -> 587720 (14.02 %) bytes
LDS: 2 -> 2 (0.00 %) blocks
Max Waves: 194 -> 196 (1.03 %)
Wait states: 0 -> 0 (0.00 %)
It also unrolls a couple of loops in shader-db on radeonsi.
Totals from affected shaders:
SGPRS: 128 -> 128 (0.00 %)
VGPRS: 64 -> 64 (0.00 %)
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: 6880 -> 9504 (38.14 %) bytes
LDS: 0 -> 0 (0.00 %) blocks
Max Waves: 16 -> 16 (0.00 %)
Wait states: 0 -> 0 (0.00 %)
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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| amd | ||
| broadcom | ||
| compiler | ||
| egl | ||
| freedreno | ||
| gallium | ||
| gbm | ||
| getopt | ||
| glx | ||
| gtest | ||
| hgl | ||
| imgui | ||
| intel | ||
| loader | ||
| mapi | ||
| mesa | ||
| util | ||
| vulkan | ||
| Makefile.am | ||
| meson.build | ||
| SConscript | ||