freedreno/ir3: Implement lowering passes for VS and GS

This introduces two new lowering passes. One to lower VS to explicit
outputs using STLW and one to lower GS to load input using LDLW and
implement the GS specific functionality.

Signed-off-by: Kristian H. Kristensen <[email protected]>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/compiler/shader_enums.h b/src/compiler/shader_enums.h
index 0704719c229..f9b2b8c1d73 100644
--- a/src/compiler/shader_enums.h
+++ b/src/compiler/shader_enums.h
@@ -641,6 +641,13 @@ typedef enum
    SYSTEM_VALUE_BARYCENTRIC_CENTROID,
    SYSTEM_VALUE_BARYCENTRIC_SIZE,
 
+   /**
+    * IR3 specific geometry shader system value that packs invocation id,
+    * thread id and vertex id.  Having this as a nir level system value lets
+    * us do the unpacking in nir.
+    */
+   SYSTEM_VALUE_GS_HEADER_IR3,
+
    SYSTEM_VALUE_MAX             /**< Number of values */
 } gl_system_value;