[Mesa-dev] [PATCH] nir: rename variables in nir_lower_io_to_temporaries for clarity

[Caio Marcelo de Oliveira Filho]

In the emit_copies() function, the use of "newv" and "temp" names made
sense when only copies from temporaries to the new variables were
being done. But now there are other calls to copy with other pairings,
and "temp" doesn't always refer to a temporary created in this
pass. Use the names "dest" and "src" instead.
---
 .../nir/nir_lower_io_to_temporaries.c         | 22 +++++++++----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/src/compiler/nir/nir_lower_io_to_temporaries.c b/src/compiler/nir/nir_lower_io_to_temporaries.c
index 301ba65892..c3e1207f4e 100644
--- a/src/compiler/nir/nir_lower_io_to_temporaries.c
+++ b/src/compiler/nir/nir_lower_io_to_temporaries.c
@@ -40,34 +40,34 @@ struct lower_io_state {
 };
 
 static void
-emit_copies(nir_cursor cursor, nir_shader *shader, struct exec_list *new_vars,
-          struct exec_list *old_vars)
+emit_copies(nir_cursor cursor, nir_shader *shader, struct exec_list *dest_vars,
+            struct exec_list *src_vars)
 {
-   assert(exec_list_length(new_vars) == exec_list_length(old_vars));
+   assert(exec_list_length(dest_vars) == exec_list_length(src_vars));
 
-   foreach_two_lists(new_node, new_vars, old_node, old_vars) {
-      nir_variable *newv = exec_node_data(nir_variable, new_node, node);
-      nir_variable *temp = exec_node_data(nir_variable, old_node, node);
+   foreach_two_lists(new_node, dest_vars, old_node, src_vars) {
+      nir_variable *dest = exec_node_data(nir_variable, new_node, node);
+      nir_variable *src = exec_node_data(nir_variable, old_node, node);
 
       /* No need to copy the contents of a non-fb_fetch_output output variable
        * to the temporary allocated for it, since its initial value is
        * undefined.
        */
-      if (temp->data.mode == nir_var_shader_out &&
-          !temp->data.fb_fetch_output)
+      if (src->data.mode == nir_var_shader_out &&
+          !src->data.fb_fetch_output)
          continue;
 
       /* Can't copy the contents of the temporary back to a read-only
        * interface variable.  The value of the temporary won't have been
        * modified by the shader anyway.
        */
-      if (newv->data.read_only)
+      if (dest->data.read_only)
          continue;
 
       nir_intrinsic_instr *copy =
          nir_intrinsic_instr_create(shader, nir_intrinsic_copy_var);
-      copy->variables[0] = nir_deref_var_create(copy, newv);
-      copy->variables[1] = nir_deref_var_create(copy, temp);
+      copy->variables[0] = nir_deref_var_create(copy, dest);
+      copy->variables[1] = nir_deref_var_create(copy, src);
 
       nir_instr_insert(cursor, &copy->instr);
    }
-- 
2.17.0