i965: Skip IR annotations with INTEL_DEBUG=noann.

Running shader-db with INTEL_DEBUG=noann reduces the runtime
from ~90 to ~80 seconds on my machine. It also reduces the disk space
consumed by the .out files from 660 MB (676 on disk) to 343 MB (358 on
disk).

Reviewed-by: Kenneth Graunke <[email protected]>

3 files changed, 6 insertions, 2 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_shader.cpp b/src/mesa/drivers/dri/i965/brw_shader.cpp
index 69eab598ba2..12765038ebf 100644
--- a/src/mesa/drivers/dri/i965/brw_shader.cpp
+++ b/src/mesa/drivers/dri/i965/brw_shader.cpp
@@ -794,8 +794,10 @@ void annotate(struct brw_context *brw,
 
    struct annotation *ann = &annotation->ann[annotation->ann_count++];
    ann->offset = offset;
-   ann->ir = inst->ir;
-   ann->annotation = inst->annotation;
+   if ((INTEL_DEBUG & DEBUG_NO_ANNOTATION) == 0) {
+      ann->ir = inst->ir;
+      ann->annotation = inst->annotation;
+   }
 
    if (cfg->blocks[annotation->cur_block]->start == inst) {
       ann->block_start = cfg->blocks[annotation->cur_block];
diff --git a/src/mesa/drivers/dri/i965/intel_debug.c b/src/mesa/drivers/dri/i965/intel_debug.c
index bba873bd3d7..c72fce2581a 100644
--- a/src/mesa/drivers/dri/i965/intel_debug.c
+++ b/src/mesa/drivers/dri/i965/intel_debug.c
@@ -65,6 +65,7 @@ static const struct dri_debug_control debug_control[] = {
    { "blorp", DEBUG_BLORP },
    { "nodualobj", DEBUG_NO_DUAL_OBJECT_GS },
    { "optimizer", DEBUG_OPTIMIZER },
+   { "noann", DEBUG_NO_ANNOTATION },
    { NULL,    0 }
 };
 
diff --git a/src/mesa/drivers/dri/i965/intel_debug.h b/src/mesa/drivers/dri/i965/intel_debug.h
index f2570548ff8..37dc34a2611 100644
--- a/src/mesa/drivers/dri/i965/intel_debug.h
+++ b/src/mesa/drivers/dri/i965/intel_debug.h
@@ -61,6 +61,7 @@ extern uint64_t INTEL_DEBUG;
 #define DEBUG_VUE         0x40000000
 #define DEBUG_NO_DUAL_OBJECT_GS 0x80000000
 #define DEBUG_OPTIMIZER   0x100000000
+#define DEBUG_NO_ANNOTATION 0x200000000
 
 #ifdef HAVE_ANDROID_PLATFORM
 #define LOG_TAG "INTEL-MESA"