radeonsi: decrease maximum supported GENERIC varying index from 42 to 31

This can decrease LDS and/or memory usage for shader outputs when geometry
shaders or tessellation is used.

Only PS inputs support higher indices and those aren't eliminated by
kill_outputs.

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Acked-by: Dave Airlie <airlied@redhat.com>

diff --git a/src/gallium/drivers/radeonsi/si_shader.h b/src/gallium/drivers/radeonsi/si_shader.h
index 8fb4b563b785d871df7ef3b1099cf9c7eab3363a..1eacef63e7223872fec581f30e29499f967fb55a 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_shader.h
+++ b/src/gallium/drivers/radeonsi/si_shader.h
@@ -157,7 +157,7 @@ struct si_context;
 /* Shader IO unique indices are supported for TGSI_SEMANTIC_GENERIC with an
  * index smaller than this.
  */
-#define SI_MAX_IO_GENERIC       43
+#define SI_MAX_IO_GENERIC       32
 
 /* SGPR user data indices */
 enum {