Mesa (master): i965: Add INTEL_DEBUG stages support for disk shader cache

[Jordan Justen]

Module: Mesa
Branch: master
Commit: d07a49fb1840bb441e600ce942cb0088e7ea15c7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d07a49fb1840bb441e600ce942cb0088e7ea15c7

Author: Jordan Justen <jordan.l.justen at intel.com>
Date:   Fri Mar 16 16:44:22 2018 -0700

i965: Add INTEL_DEBUG stages support for disk shader cache

Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>
Reviewed-by: Matt Turner <mattst88 at gmail.com>

---

 src/mesa/drivers/dri/i965/brw_disk_cache.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_disk_cache.c b/src/mesa/drivers/dri/i965/brw_disk_cache.c
index 41f742e858..0671dd20f8 100644
--- a/src/mesa/drivers/dri/i965/brw_disk_cache.c
+++ b/src/mesa/drivers/dri/i965/brw_disk_cache.c
@@ -31,6 +31,9 @@
 #include "util/macros.h"
 #include "util/mesa-sha1.h"
 
+#include "compiler/brw_eu.h"
+#include "common/gen_debug.h"
+
 #include "brw_context.h"
 #include "brw_program.h"
 #include "brw_cs.h"
@@ -39,6 +42,16 @@
 #include "brw_vs.h"
 #include "brw_wm.h"
 
+static bool
+debug_enabled_for_stage(gl_shader_stage stage)
+{
+   static const uint64_t stage_debug_flags[] = {
+      DEBUG_VS, DEBUG_TCS, DEBUG_TES, DEBUG_GS, DEBUG_WM, DEBUG_CS,
+   };
+   assert((int)stage >= 0 && stage < ARRAY_SIZE(stage_debug_flags));
+   return (INTEL_DEBUG & stage_debug_flags[stage]) != 0;
+}
+
 static void
 gen_shader_sha1(struct brw_context *brw, struct gl_program *prog,
                 gl_shader_stage stage, void *key, unsigned char *out_sha1)
@@ -230,6 +243,19 @@ read_and_upload(struct brw_context *brw, struct disk_cache *cache,
 
    brw_alloc_stage_scratch(brw, stage_state, prog_data->total_scratch);
 
+   if (unlikely(debug_enabled_for_stage(stage))) {
+      fprintf(stderr, "NIR for %s program %d loaded from disk shader cache:\n",
+              _mesa_shader_stage_to_abbrev(stage), brw_program(prog)->id);
+      brw_program_deserialize_nir(&brw->ctx, prog, stage);
+      nir_shader *nir = prog->nir;
+      nir_print_shader(nir, stderr);
+      fprintf(stderr, "Native code for %s %s shader %s from disk cache:\n",
+              nir->info.label ? nir->info.label : "unnamed",
+              _mesa_shader_stage_to_string(nir->info.stage), nir->info.name);
+      brw_disassemble(&brw->screen->devinfo, program, 0,
+                      prog_data->program_size, stderr);
+   }
+
    brw_upload_cache(&brw->cache, cache_id, &prog_key, brw_prog_key_size(stage),
                     program, prog_data->program_size, prog_data,
                     brw_prog_data_size(stage), &stage_state->prog_offset,