radeonsi/gfx10: move s_sendmsg gs_alloc_req to the beginning of shaders

This will allow us to merge some IF blocks in shaders.

Acked-by: Pierre-Eric Pelloux-Prayer <[email protected]>

3 files changed, 13 insertions, 3 deletions

diff --git a/src/gallium/drivers/radeonsi/gfx10_shader_ngg.c b/src/gallium/drivers/radeonsi/gfx10_shader_ngg.c
index b7b7edc46e7..2f6f9fe3cc2 100644
--- a/src/gallium/drivers/radeonsi/gfx10_shader_ngg.c
+++ b/src/gallium/drivers/radeonsi/gfx10_shader_ngg.c
@@ -123,6 +123,13 @@ static LLVMValueRef ngg_get_vertices_per_prim(struct si_shader_context *ctx,
 	}
 }
 
+void gfx10_ngg_build_sendmsg_gs_alloc_req(struct si_shader_context *ctx)
+{
+	ac_build_sendmsg_gs_alloc_req(&ctx->ac, get_wave_id_in_tg(ctx),
+				      ngg_get_vtx_cnt(ctx),
+				      ngg_get_prim_cnt(ctx));
+}
+
 static void build_streamout_vertex(struct si_shader_context *ctx,
 				   LLVMValueRef *so_buffer, LLVMValueRef *wg_offset_dw,
 				   unsigned stream, LLVMValueRef offset_vtx,
@@ -646,9 +653,6 @@ void gfx10_emit_ngg_epilogue(struct ac_shader_abi *abi,
 		ac_build_endif(&ctx->ac, 5400);
 	}
 
-	ac_build_sendmsg_gs_alloc_req(&ctx->ac, get_wave_id_in_tg(ctx),
-				      ngg_get_vtx_cnt(ctx), ngg_get_prim_cnt(ctx));
-
 	/* Update query buffer */
 	if (ctx->screen->use_ngg_streamout &&
 	    !info->properties[TGSI_PROPERTY_VS_BLIT_SGPRS_AMD]) {
diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c
index 766d25b396e..592a486424a 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -2421,6 +2421,11 @@ static bool si_build_main_function(struct si_shader_context *ctx,
 			     (shader->key.as_ngg && !shader->key.as_es)))
 				ac_init_exec_full_mask(&ctx->ac);
 
+			if ((ctx->type == PIPE_SHADER_VERTEX ||
+			     ctx->type == PIPE_SHADER_TESS_EVAL) &&
+			    shader->key.as_ngg && !shader->key.as_es)
+				gfx10_ngg_build_sendmsg_gs_alloc_req(ctx);
+
 			if (ctx->type == PIPE_SHADER_TESS_CTRL ||
 			    ctx->type == PIPE_SHADER_GEOMETRY) {
 				if (ctx->type == PIPE_SHADER_GEOMETRY && shader->key.as_ngg) {
diff --git a/src/gallium/drivers/radeonsi/si_shader_internal.h b/src/gallium/drivers/radeonsi/si_shader_internal.h
index 80011edb3d5..b8d2ac84fca 100644
--- a/src/gallium/drivers/radeonsi/si_shader_internal.h
+++ b/src/gallium/drivers/radeonsi/si_shader_internal.h
@@ -299,6 +299,7 @@ void si_llvm_emit_streamout(struct si_shader_context *ctx,
 			    unsigned noutput, unsigned stream);
 void si_create_function(struct si_shader_context *ctx);
 
+void gfx10_ngg_build_sendmsg_gs_alloc_req(struct si_shader_context *ctx);
 void gfx10_emit_ngg_epilogue(struct ac_shader_abi *abi,
 			     unsigned max_outputs,
 			     LLVMValueRef *addrs);