diff options
| author | Marek Olšák <[email protected]> | 2016-04-07 00:49:32 +0200 |
|---|---|---|
| committer | Marek Olšák <[email protected]> | 2016-04-07 13:58:01 +0200 |
| commit | baa0b3f4ccd960bb6131ba16b1f9d8736c6432c1 (patch) | |
| tree | bcccd47ce91a380fc7999c9abf6b80ca6ffd5896 | |
| parent | 715e97e3421ec33c219c9829e7930d135dfe0bf8 (diff) | |
radeonsi: don't use the real barrier instruction in tess ctrl shaders
Reviewed-by: Bas Nieuwenhuizen <[email protected]>
Reviewed-by: Nicolai Hähnle <[email protected]>
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_shader.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c index bf3f00867e9..08da3e37550 100644 --- a/src/gallium/drivers/radeonsi/si_shader.c +++ b/src/gallium/drivers/radeonsi/si_shader.c @@ -4282,6 +4282,14 @@ static void si_llvm_emit_barrier(const struct lp_build_tgsi_action *action, struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = bld_base->base.gallivm; + /* The real barrier instruction isn’t needed, because an entire patch + * always fits into a single wave. + */ + if (ctx->type == TGSI_PROCESSOR_TESS_CTRL) { + emit_optimization_barrier(ctx); + return; + } + lp_build_intrinsic(gallivm->builder, HAVE_LLVM >= 0x0309 ? "llvm.amdgcn.s.barrier" : "llvm.AMDGPU.barrier.local", |