tgsi: add Texture and Format to tgsi_instruction_memory

Frontends should have this information readily available, and it simplifies
image LOAD/STORE/ATOM* handling especially with indirect image access.

Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

src/gallium/auxiliary/tgsi/tgsi_dump.c

@@ -637,6 +637,14 @@ iter_instruction(
          TXT(", ");
          ENM(bit, tgsi_memory_names);
       }
+      if (inst->Memory.Texture) {
+         TXT( ", " );
+         ENM( inst->Memory.Texture, tgsi_texture_names );
+      }
+      if (inst->Memory.Format) {
+         TXT( ", " );
+         TXT( util_format_name(inst->Memory.Format) );
+      }
    }
 
    switch (inst->Instruction.Opcode) {

src/gallium/include/pipe/p_shader_tokens.h

@@ -743,7 +743,9 @@ struct tgsi_dst_register
 struct tgsi_instruction_memory
 {
    unsigned Qualifier : 3;  /* TGSI_MEMORY_ */
-   unsigned Padding   : 29;
+   unsigned Texture   : 8;  /* only for images: TGSI_TEXTURE_ */
+   unsigned Format    : 10; /* only for images: PIPE_FORMAT_ */
+   unsigned Padding   : 11;
 };
 
 #define TGSI_MEMBAR_SHADER_BUFFER (1 << 0)