nir: Get rid of function overloads

When Connor originally drafted NIR, he copied the same function+overload
system that GLSL IR had with a few names changed.  However, this
double-indirection is not really needed and has only served to confuse
people.  Instead, let's just have functions which may not have unique names
and may or may not have an implementation.  If someone wants to do overload
resolving, they can hav a hash table based function+overload system in the
overload resolving pass.  There's no good reason to keep it in core NIR.

Reviewed-by: Connor Abbott <[email protected]>
Acked-by: Kenneth Graunke <[email protected]>

ir3 bits are

Reviewed-by: Rob Clark <[email protected]>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/glsl/nir/nir_lower_io.c b/src/glsl/nir/nir_lower_io.c
index a3565cc52ea..80c5151f0ea 100644
--- a/src/glsl/nir/nir_lower_io.c
+++ b/src/glsl/nir/nir_lower_io.c
@@ -304,9 +304,9 @@ void
 nir_lower_io(nir_shader *shader, nir_variable_mode mode,
              int (*type_size)(const struct glsl_type *))
 {
-   nir_foreach_overload(shader, overload) {
-      if (overload->impl)
-         nir_lower_io_impl(overload->impl, mode, type_size);
+   nir_foreach_function(shader, function) {
+      if (function->impl)
+         nir_lower_io_impl(function->impl, mode, type_size);
    }
 }