radeonsi: use multi-threaded compilation in debug contexts

We only have to stay single-threaded when debug output must be synchronous.
This yields better parallelism in shader-db runs for me.

Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_state_shaders.c b/src/gallium/drivers/radeonsi/si_state_shaders.c
index abbe451..94587b2 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_state_shaders.c
+++ b/src/gallium/drivers/radeonsi/si_state_shaders.c
@@ -1103,16 +1103,16 @@ void si_init_shader_selector_async(void *job, int thread_index)
        struct si_shader_selector *sel = (struct si_shader_selector *)job;
        struct si_screen *sscreen = sel->screen;
        LLVMTargetMachineRef tm;
-       struct pipe_debug_callback *debug;
+       struct pipe_debug_callback *debug = &sel->debug;
        unsigned i;
 
        if (thread_index >= 0) {
                assert(thread_index < ARRAY_SIZE(sscreen->tm));
                tm = sscreen->tm[thread_index];
-               debug = NULL;
+               if (!debug->async)
+                       debug = NULL;
        } else {
                tm = sel->tm;
-               debug = &sel->debug;
        }
 
        /* Compile the main shader part for use with a prolog and/or epilog.
@@ -1324,7 +1324,7 @@ static void *si_create_shader_selector(struct pipe_context *ctx,
        pipe_mutex_init(sel->mutex);
        util_queue_fence_init(&sel->ready);
 
-       if (sctx->b.debug.debug_message ||
+       if ((sctx->b.debug.debug_message && !sctx->b.debug.async) ||
            !util_queue_is_initialized(&sscreen->shader_compiler_queue))
                si_init_shader_selector_async(sel, -1);
        else