Mesa (master): radeonsi: use the correct LLVMTargetMachineRef in si_build_shader_variant

[Nicolai Hähnle]

Module: Mesa
Branch: master
Commit: da2e52b382351fea6f0321ad9a24c099b360e685
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=da2e52b382351fea6f0321ad9a24c099b360e685

Author: Nicolai Hähnle <nicolai.haehnle at amd.com>
Date:   Mon Jun 12 22:33:56 2017 +0200

radeonsi: use the correct LLVMTargetMachineRef in si_build_shader_variant

si_build_shader_variant can actually be called directly from one of
normal-priority compiler threads. In that case, the thread_index is
only valid for the normal tm array.

v2:
- use the correct sel/shader->compiler_ctx_state

Fixes: 86cc8097266c ("radeonsi: use a compiler queue with a low priority for optimized shaders")
Reviewed-by: Marek Olšák <marek.olsak at amd.com>

---

 src/gallium/drivers/radeonsi/si_state_shaders.c | 28 +++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)

diff --git a/src/gallium/drivers/radeonsi/si_state_shaders.c b/src/gallium/drivers/radeonsi/si_state_shaders.c
index 668c5d9447..12eae4cda9 100644
--- a/src/gallium/drivers/radeonsi/si_state_shaders.c
+++ b/src/gallium/drivers/radeonsi/si_state_shaders.c
@@ -1447,9 +1447,10 @@ static inline void si_shader_selector_key(struct pipe_context *ctx,
 		memset(&key->opt, 0, sizeof(key->opt));
 }
 
-static void si_build_shader_variant(void *job, int thread_index)
+static void si_build_shader_variant(struct si_shader *shader,
+				    int thread_index,
+				    bool low_priority)
 {
-	struct si_shader *shader = (struct si_shader *)job;
 	struct si_shader_selector *sel = shader->selector;
 	struct si_screen *sscreen = sel->screen;
 	LLVMTargetMachineRef tm;
@@ -1457,11 +1458,17 @@ static void si_build_shader_variant(void *job, int thread_index)
 	int r;
 
 	if (thread_index >= 0) {
-		assert(thread_index < ARRAY_SIZE(sscreen->tm_low_priority));
-		tm = sscreen->tm_low_priority[thread_index];
+		if (low_priority) {
+			assert(thread_index < ARRAY_SIZE(sscreen->tm_low_priority));
+			tm = sscreen->tm_low_priority[thread_index];
+		} else {
+			assert(thread_index < ARRAY_SIZE(sscreen->tm));
+			tm = sscreen->tm[thread_index];
+		}
 		if (!debug->async)
 			debug = NULL;
 	} else {
+		assert(!low_priority);
 		tm = shader->compiler_ctx_state.tm;
 	}
 
@@ -1485,6 +1492,15 @@ static void si_build_shader_variant(void *job, int thread_index)
 	si_shader_init_pm4_state(sscreen, shader);
 }
 
+static void si_build_shader_variant_low_priority(void *job, int thread_index)
+{
+	struct si_shader *shader = (struct si_shader *)job;
+
+	assert(thread_index >= 0);
+
+	si_build_shader_variant(shader, thread_index, true);
+}
+
 static const struct si_shader_key zeroed;
 
 static bool si_check_missing_main_part(struct si_screen *sscreen,
@@ -1690,7 +1706,7 @@ again:
 		/* Compile it asynchronously. */
 		util_queue_add_job(&sscreen->shader_compiler_queue_low_priority,
 				   shader, &shader->optimized_ready,
-				   si_build_shader_variant, NULL);
+				   si_build_shader_variant_low_priority, NULL);
 
 		/* Use the default (unoptimized) shader for now. */
 		memset(&key->opt, 0, sizeof(key->opt));
@@ -1699,7 +1715,7 @@ again:
 	}
 
 	assert(!shader->is_optimized);
-	si_build_shader_variant(shader, thread_index);
+	si_build_shader_variant(shader, thread_index, false);
 
 	if (!shader->compilation_failed)
 		state->current = shader;