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nir: add nir_variable::index and nir_index_vars

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This will be useful as a deterministic identifier/index for the variable.

v2: fix comment style

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Connor Abbott <cwabbott0@gmail.com> (v1)
This commit is contained in:
Rhys Perry
2019-11-15 15:15:14 +00:00
parent 45a0b53490
commit 9f92e8b721
2 changed files with 41 additions and 0 deletions
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33
src/compiler/nir/nir.c
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@@ -1787,6 +1787,39 @@ nir_index_instrs(nir_function_impl *impl)
return index;
}
static void
index_var_list(struct exec_list *list)
{
unsigned next_index = 0;
nir_foreach_variable(var, list)
var->index = next_index++;
}
void
nir_index_vars(nir_shader *shader, nir_function_impl *impl, nir_variable_mode modes)
{
if ((modes & nir_var_function_temp) && impl)
index_var_list(&impl->locals);
if (modes & nir_var_shader_temp)
index_var_list(&shader->globals);
if (modes & nir_var_shader_in)
index_var_list(&shader->inputs);
if (modes & nir_var_shader_out)
index_var_list(&shader->outputs);
if (modes & (nir_var_uniform | nir_var_mem_ubo | nir_var_mem_ssbo))
index_var_list(&shader->uniforms);
if (modes & nir_var_mem_shared)
index_var_list(&shader->shared);
if (modes & nir_var_system_value)
index_var_list(&shader->system_values);
}
static nir_instr *
cursor_next_instr(nir_cursor cursor)
{