Mesa (main): nir: Re-arrange the variable modes

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Module: Mesa
Branch: main
Commit: 9272a952c9b4fa1bcd4d61997e1785ea9471a32d
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=9272a952c9b4fa1bcd4d61997e1785ea9471a32d

Author: Jason Ekstrand <jason at jlekstrand.net>
Date:   Fri Oct 15 13:04:45 2021 -0500

nir: Re-arrange the variable modes

Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira at intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13386>

---

 src/compiler/nir/nir.h | 40 +++++++++++++++++++++++-----------------
 1 file changed, 23 insertions(+), 17 deletions(-)

diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index c6f491b616d..939b07e7eaa 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -120,27 +120,33 @@ typedef struct {
 } nir_state_slot;
 
 typedef enum {
-   nir_var_shader_in       = (1 << 0),
-   nir_var_shader_out      = (1 << 1),
-   nir_var_shader_temp     = (1 << 2),
-   nir_var_function_temp   = (1 << 3),
-   nir_var_uniform         = (1 << 4),
-   nir_var_mem_ubo         = (1 << 5),
-   nir_var_system_value    = (1 << 6),
-   nir_var_mem_ssbo        = (1 << 7),
-   nir_var_mem_shared      = (1 << 8),
-   nir_var_mem_global      = (1 << 9),
+   nir_var_system_value    = (1 << 0),
+   nir_var_uniform         = (1 << 1),
+   nir_var_shader_in       = (1 << 2),
+   nir_var_shader_out      = (1 << 3),
+   nir_var_image           = (1 << 4),
+   /** Incoming call or ray payload data for ray-tracing shaders */
+   nir_var_shader_call_data = (1 << 5),
+   /** Ray hit attributes */
+   nir_var_ray_hit_attrib  = (1 << 6),
+
+   /* Modes named nir_var_mem_* have explicit data layout */
+   nir_var_mem_ubo         = (1 << 7),
+   nir_var_mem_push_const  = (1 << 8),
+   nir_var_mem_ssbo        = (1 << 9),
+   nir_var_mem_constant    = (1 << 10),
+
+   /* Generic modes intentionally come last. */
+   nir_var_shader_temp     = (1 << 11),
+   nir_var_function_temp   = (1 << 12),
+   nir_var_mem_shared      = (1 << 13),
+   nir_var_mem_global      = (1 << 14),
+
    nir_var_mem_generic     = (nir_var_shader_temp |
                               nir_var_function_temp |
                               nir_var_mem_shared |
                               nir_var_mem_global),
-   nir_var_mem_push_const  = (1 << 10), /* not actually used for variables */
-   nir_var_mem_constant    = (1 << 11),
-   /** Incoming call or ray payload data for ray-tracing shaders */
-   nir_var_shader_call_data = (1 << 12),
-   /** Ray hit attributes */
-   nir_var_ray_hit_attrib  = (1 << 13),
-   nir_var_image           = (1 << 14),
+
    nir_var_read_only_modes = nir_var_shader_in | nir_var_uniform |
                              nir_var_system_value | nir_var_mem_constant |
                              nir_var_mem_ubo,