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authorSamuel Pitoiset <samuel.pitoiset@gmail.com>2018-01-29 17:19:18 +0100
committerSamuel Pitoiset <samuel.pitoiset@gmail.com>2018-02-06 23:08:44 +0100
commit3488a3f0332ba1d77e2c4609a26206e77922e81b (patch)
tree732400c3f6e597d9c078eb48414914a8501c04f1 /src
parente68562b94b79f5ce17f5804f8d7308faf57bd3f0 (diff)
radv: run nir_opt_shrink_load
LLVM can't shrink loads. Polaris10: Totals from affected shaders: SGPRS: 62528 -> 59955 (-4.11 %) VGPRS: 44708 -> 44616 (-0.21 %) Spilled SGPRs: 16 -> 8 (-50.00 %) Code Size: 1355504 -> 1355172 (-0.02 %) bytes Max Waves: 11710 -> 11670 (-0.34 %) Vega10: Totals from affected shaders: SGPRS: 51448 -> 50371 (-2.09 %) VGPRS: 39140 -> 39048 (-0.24 %) Spilled SGPRs: 16 -> 16 (0.00 %) Code Size: 1307188 -> 1304296 (-0.22 %) bytes Max Waves: 11312 -> 11292 (-0.18 %) This reduces SGPRs spilling in MadMax, and it also reduces number of SGPRs in DOW3 and F12017. The number of waves slightly decreases in F1 but I don't see any performance changes after benchmarking it. Talos and Serious Sam are not affected because they don't use any push constants. Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com> Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Diffstat (limited to 'src')
-rw-r--r--src/amd/vulkan/radv_shader.c2
-rw-r--r--src/compiler/nir/nir_opt_shrink_load.c (renamed from src/compiler/nir/nir_opt_shrink_load_constant.c)0
2 files changed, 2 insertions, 0 deletions
diff --git a/src/amd/vulkan/radv_shader.c b/src/amd/vulkan/radv_shader.c
index af094e6220f..42f83bb3355 100644
--- a/src/amd/vulkan/radv_shader.c
+++ b/src/amd/vulkan/radv_shader.c
@@ -148,6 +148,8 @@ radv_optimize_nir(struct nir_shader *shader)
NIR_PASS(progress, shader, nir_opt_loop_unroll, 0);
}
} while (progress);
+
+ NIR_PASS(progress, shader, nir_opt_shrink_load);
}
nir_shader *
diff --git a/src/compiler/nir/nir_opt_shrink_load_constant.c b/src/compiler/nir/nir_opt_shrink_load.c
index f97b7f9b67f..f97b7f9b67f 100644
--- a/src/compiler/nir/nir_opt_shrink_load_constant.c
+++ b/src/compiler/nir/nir_opt_shrink_load.c