From: Dave Airlie Date: Tue, 10 Oct 2017 23:48:21 +0000 (+1000) Subject: nir: bump loop unroll limit to 96. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2d36efdb7f18f061c519dbb93f6058bf161aad33;p=mesa.git nir: bump loop unroll limit to 96. With the ssao demo from Vulkan demos: radv/rx480: 440->440fps anv/haswell: 24->34 fps The demo does a 0->32 loop across a ubo with 32 members. Reviewed-by: Timothy Arceri Signed-off-by: Dave Airlie --- diff --git a/src/compiler/nir/nir_opt_loop_unroll.c b/src/compiler/nir/nir_opt_loop_unroll.c index 79d04f978bc..dae5bfc9020 100644 --- a/src/compiler/nir/nir_opt_loop_unroll.c +++ b/src/compiler/nir/nir_opt_loop_unroll.c @@ -33,8 +33,10 @@ * to give about the same results. Around 5 instructions per node. But some * loops that would unroll with GLSL IR fail to unroll if we set this to 25 so * we set it to 26. + * This was bumped to 96 because it unrolled more loops with a positive + * effect (vulkan ssao demo). */ -#define LOOP_UNROLL_LIMIT 26 +#define LOOP_UNROLL_LIMIT 96 /* Prepare this loop for unrolling by first converting to lcssa and then * converting the phis from the loops first block and the block that follows