The patch this depends on, "ac,ac/nir: use a better sync scope for
shared atomics", has been pushed:
https://gitlab.freedesktop.org/mesa/mesa/commit/bd4c661ad08e772fdccb562ffbb2f45705c4fec8
On Fri, 26 Apr 2019 at 21:41, Marek Olšák wrote:
>
> From: Marek Olšák
>
> This depends on "ac,ac/nir: use a better sync scope for shared atomics"
> ---
> src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c | 12
> 1 file changed, 4 insertions(+), 8 deletions(-)
>
> diff --git a/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c
> b/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c
> index eb90bfb10ff..5e540fc5098 100644
> --- a/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c
> +++ b/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c
> @@ -776,38 +776,36 @@ static void store_emit(
> emit_data->output[emit_data->chan] =
> ac_build_image_opcode(>ac, );
> }
> }
>
> static void atomic_emit_memory(struct si_shader_context *ctx,
> struct lp_build_emit_data *emit_data) {
> LLVMBuilderRef builder = ctx->ac.builder;
> const struct tgsi_full_instruction * inst = emit_data->inst;
> LLVMValueRef ptr, result, arg;
> + const char *sync_scope = HAVE_LLVM >= 0x0900 ? "workgroup-one-as" :
> "workgroup";
>
> ptr = get_memory_ptr(ctx, inst, ctx->i32, 1);
>
> arg = lp_build_emit_fetch(>bld_base, inst, 2, 0);
> arg = ac_to_integer(>ac, arg);
>
> if (inst->Instruction.Opcode == TGSI_OPCODE_ATOMCAS) {
> LLVMValueRef new_data;
> new_data = lp_build_emit_fetch(>bld_base,
>inst, 3, 0);
>
> new_data = ac_to_integer(>ac, new_data);
>
> - result = LLVMBuildAtomicCmpXchg(builder, ptr, arg, new_data,
> -
> LLVMAtomicOrderingSequentiallyConsistent,
> -
> LLVMAtomicOrderingSequentiallyConsistent,
> - false);
> -
> + result = ac_build_atomic_cmp_xchg(>ac, ptr, arg,
> new_data,
> + sync_scope);
> result = LLVMBuildExtractValue(builder, result, 0, "");
> } else {
> LLVMAtomicRMWBinOp op;
>
> switch(inst->Instruction.Opcode) {
> case TGSI_OPCODE_ATOMUADD:
> op = LLVMAtomicRMWBinOpAdd;
> break;
> case TGSI_OPCODE_ATOMXCHG:
> op = LLVMAtomicRMWBinOpXchg;
> @@ -830,23 +828,21 @@ static void atomic_emit_memory(struct si_shader_context
> *ctx,
> case TGSI_OPCODE_ATOMIMIN:
> op = LLVMAtomicRMWBinOpMin;
> break;
> case TGSI_OPCODE_ATOMIMAX:
> op = LLVMAtomicRMWBinOpMax;
> break;
> default:
> unreachable("unknown atomic opcode");
> }
>
> - result = LLVMBuildAtomicRMW(builder, op, ptr, arg,
> -
> LLVMAtomicOrderingSequentiallyConsistent,
> - false);
> + result = ac_build_atomic_rmw(>ac, op, ptr, arg,
> sync_scope);
> }
> emit_data->output[emit_data->chan] =
> LLVMBuildBitCast(builder, result, ctx->f32, "");
> }
>
> static void atomic_emit(
> const struct lp_build_tgsi_action *action,
> struct lp_build_tgsi_context *bld_base,
> struct lp_build_emit_data *emit_data)
> {
> --
> 2.17.1
>
> ___
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