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authorDave Airlie <airlied@redhat.com>2017-10-11 09:48:21 +1000
committerDave Airlie <airlied@redhat.com>2017-10-11 10:11:36 +1000
commit2d36efdb7f18f061c519dbb93f6058bf161aad33 (patch)
tree29795485442092ab04339cfa3227ee58d7bb5881 /src/compiler
parent5be3fdfa327902d6385e3469ae76cca948091464 (diff)
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 <tarceri@itsqueeze.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'src/compiler')
-rw-r--r--src/compiler/nir/nir_opt_loop_unroll.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/compiler/nir/nir_opt_loop_unroll.c b/src/compiler/nir/nir_opt_loop_unroll.c
index 79d04f978b..dae5bfc902 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