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radv: do not emit unnecessary GS output stores

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Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset
2018-05-16 17:43:22 +02:00
parent 507402ada6
commit a6e44d1271
1 changed files with 7 additions and 0 deletions
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7
src/amd/vulkan/radv_nir_to_llvm.c
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@@ -1684,6 +1684,8 @@ visit_emit_vertex(struct ac_shader_abi *abi, unsigned stream, LLVMValueRef *addr
/* loop num outputs */
idx = 0;
for (unsigned i = 0; i < AC_LLVM_MAX_OUTPUTS; ++i) {
unsigned output_usage_mask =
ctx->shader_info->info.gs.output_usage_mask[i];
LLVMValueRef *out_ptr = &addrs[i * 4];
int length = 4;
int slot = idx;
@@ -1697,8 +1699,13 @@ visit_emit_vertex(struct ac_shader_abi *abi, unsigned stream, LLVMValueRef *addr
length = ctx->num_output_clips + ctx->num_output_culls;
if (length > 4)
slot_inc = 2;
output_usage_mask = (1 << length) - 1;
}
for (unsigned j = 0; j < length; j++) {
if (!(output_usage_mask & (1 << j)))
continue;
LLVMValueRef out_val = LLVMBuildLoad(ctx->ac.builder,
out_ptr[j], "");
LLVMValueRef voffset = LLVMConstInt(ctx->ac.i32, (slot * 4 + j) * ctx->gs_max_out_vertices, false);