radeonsi: use the ac helper for index buffer stores in the culling shader

src/amd/common/ac_llvm_build.c

@@ -1194,16 +1194,17 @@ ac_build_buffer_store_format(struct ac_llvm_context *ctx,
 			     LLVMValueRef voffset,
 			     unsigned num_channels,
 			     bool glc,
+			     bool slc,
 			     bool writeonly_memory)
 {
 	if (HAVE_LLVM >= 0x800) {
 		ac_build_llvm8_buffer_store_common(ctx, rsrc, data, vindex,
 						   voffset, NULL, num_channels,
-						   ctx->f32, glc, false,
+						   ctx->f32, glc, slc,
 						   writeonly_memory, true, true);
 	} else {
 		ac_build_llvm7_buffer_store_common(ctx, rsrc, data, vindex, voffset,
-						   num_channels, glc, false,
+						   num_channels, glc, slc,
 						   writeonly_memory, true);
 	}
 }

src/amd/common/ac_llvm_build.h

@@ -282,6 +282,7 @@ ac_build_buffer_store_format(struct ac_llvm_context *ctx,
 			     LLVMValueRef voffset,
 			     unsigned num_channels,
 			     bool glc,
+			     bool slc,
 			     bool writeonly_memory);
 
 LLVMValueRef

src/amd/common/ac_nir_to_llvm.c

@@ -2556,7 +2556,7 @@ static void visit_image_store(struct ac_nir_context *ctx,
 
 		ac_build_buffer_store_format(&ctx->ac, rsrc, src, vindex,
 					     ctx->ac.i32_0, src_channels,
-					     args.cache_policy & ac_glc,
+					     args.cache_policy & ac_glc, false,
 					     writeonly_memory);
 	} else {
 		args.opcode = ac_image_store;

src/gallium/drivers/radeonsi/si_compute_prim_discard.c

@@ -856,18 +856,15 @@ void si_build_prim_discard_compute_shader(struct si_shader_context *ctx)
 		}
 
 		/* Write indices for accepted primitives. */
-		LLVMValueRef buf_args[] = {
+		LLVMValueRef vindex = LLVMBuildAdd(builder, start, prim_index, "");
-			ac_to_float(&ctx->ac, ac_build_expand_to_vec4(&ctx->ac,
+		LLVMValueRef vdata = ac_build_gather_values(&ctx->ac, index, 3);
-						ac_build_gather_values(&ctx->ac, index, 3), 3)),
+
-			output_indexbuf,
+		if (!ac_has_vec3_support(ctx->ac.chip_class, true))
-			LLVMBuildAdd(builder, start, prim_index, ""),
+			vdata = ac_build_expand_to_vec4(&ctx->ac, vdata, 3);
-			ctx->i32_0, /* voffset */
+
-			ctx->i1true, /* glc */
+		ac_build_buffer_store_format(&ctx->ac, output_indexbuf, vdata,
-			LLVMConstInt(ctx->i1, INDEX_STORES_USE_SLC, 0),
+					     vindex, ctx->i32_0, 3, true,
-		};
+					     INDEX_STORES_USE_SLC, true);
-		ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.buffer.store.format.v4f32",
-				   ctx->voidt, buf_args, 6,
-				   ac_get_store_intr_attribs(true));
 	}
 	lp_build_endif(&if_accepted);
 

src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c

@@ -728,7 +728,7 @@ static void store_emit(
 					     ac_build_gather_values(&ctx->ac, chans, num_channels),
 					     vindex, ctx->i32_0 /* voffset */,
 					     num_channels,
-					     !!(args.cache_policy & ac_glc),
+					     !!(args.cache_policy & ac_glc), false,
 					     writeonly_memory);
 	} else {
 		args.opcode = ac_image_store;