[Mesa-dev] [PATCH 19/24] radeonsi: use the writeonly LLVM attribute

[Marek Olšák]

From: Marek Olšák <marek.olsak at amd.com>

---
 src/gallium/drivers/radeonsi/si_shader.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c
index dd5bdf6..16579af 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -3720,21 +3720,22 @@ static void store_emit_buffer(
 			offset = LLVMBuildAdd(
 				builder, offset,
 				lp_build_const_int32(gallivm, start * 4), "");
 		}
 
 		emit_data->args[0] = data;
 		emit_data->args[3] = offset;
 
 		lp_build_intrinsic(
 			builder, intrinsic_name, emit_data->dst_type,
-			emit_data->args, emit_data->arg_count, 0);
+			emit_data->args, emit_data->arg_count,
+			LP_FUNC_ATTR_WRITEONLY);
 	}
 }
 
 static void store_emit_memory(
 		struct si_shader_context *ctx,
 		struct lp_build_emit_data *emit_data)
 {
 	const struct tgsi_full_instruction *inst = emit_data->inst;
 	struct gallivm_state *gallivm = &ctx->gallivm;
 	struct lp_build_context *base = &ctx->bld_base.base;
@@ -3778,32 +3779,34 @@ static void store_emit(
 
 	if (inst->Dst[0].Register.File == TGSI_FILE_BUFFER) {
 		store_emit_buffer(ctx, emit_data);
 		return;
 	}
 
 	if (target == TGSI_TEXTURE_BUFFER) {
 		emit_data->output[emit_data->chan] = lp_build_intrinsic(
 			builder, "llvm.amdgcn.buffer.store.format.v4f32",
 			emit_data->dst_type, emit_data->args,
-			emit_data->arg_count, 0);
+			emit_data->arg_count,
+			LP_FUNC_ATTR_WRITEONLY);
 	} else {
 		get_image_intr_name("llvm.amdgcn.image.store",
 				LLVMTypeOf(emit_data->args[0]), /* vdata */
 				LLVMTypeOf(emit_data->args[1]), /* coords */
 				LLVMTypeOf(emit_data->args[2]), /* rsrc */
 				intrinsic_name, sizeof(intrinsic_name));
 
 		emit_data->output[emit_data->chan] =
 			lp_build_intrinsic(
 				builder, intrinsic_name, emit_data->dst_type,
-				emit_data->args, emit_data->arg_count, 0);
+				emit_data->args, emit_data->arg_count,
+				LP_FUNC_ATTR_WRITEONLY);
 	}
 }
 
 static void atomic_fetch_args(
 		struct lp_build_tgsi_context * bld_base,
 		struct lp_build_emit_data * emit_data)
 {
 	struct si_shader_context *ctx = si_shader_context(bld_base);
 	struct gallivm_state *gallivm = bld_base->base.gallivm;
 	LLVMBuilderRef builder = gallivm->builder;
-- 
2.7.4