From: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Date: Mon, 22 Apr 2019 15:03:26 +0000 (+0200)
Subject: panfrost/midgard: Skip register allocation if there's no work to do
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a5dddc2d42163420fe6476c118c32deaa62fc2c5;p=mesa.git

panfrost/midgard: Skip register allocation if there's no work to do

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
---

diff --git a/src/gallium/drivers/panfrost/midgard/midgard_compile.c b/src/gallium/drivers/panfrost/midgard/midgard_compile.c
index 348ec861404..d4d26b9a25e 100644
--- a/src/gallium/drivers/panfrost/midgard/midgard_compile.c
+++ b/src/gallium/drivers/panfrost/midgard/midgard_compile.c
@@ -2058,6 +2058,9 @@ allocate_registers(compiler_context *ctx)
 	                print_mir_block(block);
         }
 
+        if (!ctx->temp_count)
+                return;
+
         /* Let's actually do register allocation */
         int nodes = ctx->temp_count;
         struct ra_graph *g = ra_alloc_interference_graph(regs, nodes);