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radv: enable conditional discard optimisation on radv.

Browse source 
This fixes a bunch of GPU hangs introduced in some CTS
tests like
dEQP-VK.memory.pipeline_barrier.host_write_uniform_buffer.65536

It works around an issue seen in the LLVM backend, but
also makes the radv code work more like the radeonsi stack.

Cc: "13.0" <mesa-stable@lists.freedesktop.org>

Signed-off-by: Dave Airlie <airlied@redhat.com>
(cherry picked from commit 3c9af7578f)
This commit is contained in:
Dave Airlie 2016-11-02 01:23:11 +00:00 • committed by Emil Velikov
parent fa6c02787e
commit 2bbf964af8
1 changed files with 1 additions and 0 deletions
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src/amd/vulkan/radv_pipeline.c
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@ -144,6 +144,7 @@ radv_optimize_nir(struct nir_shader *shader)
NIR_PASS(progress, shader, nir_opt_algebraic);
NIR_PASS(progress, shader, nir_opt_constant_folding);
NIR_PASS(progress, shader, nir_opt_undef);
NIR_PASS(progress, shader, nir_opt_conditional_discard);
} while (progress);
}