nir: Add a concept of a wildcard array dereference

Reviewed-by: Connor Abbott <[email protected]>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/glsl/nir/nir.h b/src/glsl/nir/nir.h
index 021d4c91323..a9a77f395f3 100644
--- a/src/glsl/nir/nir.h
+++ b/src/glsl/nir/nir.h
@@ -625,9 +625,18 @@ typedef struct {
    nir_variable *var;
 } nir_deref_var;
 
+/* This enum describes how the array is referenced.  If the deref is
+ * direct then the base_offset is used.  If the deref is indirect then then
+ * offset is given by base_offset + indirect.  If the deref is a wildcard
+ * then the deref refers to all of the elements of the array at the same
+ * time.  Wildcard dereferences are only ever allowed in copy_var
+ * intrinsics and the source and destination derefs must have matching
+ * wildcards.
+ */
 typedef enum {
    nir_deref_array_type_direct,
    nir_deref_array_type_indirect,
+   nir_deref_array_type_wildcard,
 } nir_deref_array_type;
 
 typedef struct {