gallium: redefine ATOMINC_WRAP to be more hardware-friendly

[mesa.git] / src / gallium / drivers / radeonsi / si_shader_tgsi_mem.c

diff --git a/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c b/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c
index 4a4ba43780a818d3d32ce51ed272f3cf9ce844a8..f79ed2c57e17c8660aaa11816b7b394c225a8aea 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c
+++ b/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c
@@ -828,18 +828,6 @@ static void atomic_emit(
        args.data[num_data++] =
                ac_to_integer(&ctx->ac, lp_build_emit_fetch(bld_base, inst, 2, 0));
 
-       if (inst->Instruction.Opcode == TGSI_OPCODE_ATOMINC_WRAP) {
-               /* ATOMIC_INC instruction does:
-                *      value = (value + 1) % (data + 1)
-                * but we want:
-                *      value = (value + 1) % data
-                * So replace 'data' by 'data - 1'.
-                */
-               args.data[0] = LLVMBuildSub(ctx->ac.builder,
-                                           args.data[0],
-                                           ctx->ac.i32_1, "");
-       }
-
        args.cache_policy = get_cache_policy(ctx, inst, true, false, false);
 
        if (inst->Src[0].Register.File == TGSI_FILE_BUFFER) {