[Mesa-dev] [PATCH 09/78] i965/nir/vec4: Add shader function implementation

[Eduardo Lima Mitev]

It basically allocates registers local to a function in a nir_locals map,
then emits all its control-flow blocks.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89580
---
 src/mesa/drivers/dri/i965/brw_vec4.h       |  1 +
 src/mesa/drivers/dri/i965/brw_vec4_nir.cpp | 12 +++++++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/mesa/drivers/dri/i965/brw_vec4.h b/src/mesa/drivers/dri/i965/brw_vec4.h
index e531d60..d837d90 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4.h
+++ b/src/mesa/drivers/dri/i965/brw_vec4.h
@@ -414,6 +414,7 @@ public:
    virtual dst_reg *make_reg_for_system_value(int location,
                                               const glsl_type *type) = 0;
 
+   dst_reg *nir_locals;
    src_reg *nir_inputs;
    int *nir_outputs;
    brw_reg_type *nir_output_types;
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
index 6c2a046..36c9dc0 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
@@ -274,7 +274,17 @@ vec4_visitor::nir_setup_builtin_uniform(nir_variable *var)
 void
 vec4_visitor::nir_emit_impl(nir_function_impl *impl)
 {
-   /* @TODO: Not yet implemented */
+   nir_locals = ralloc_array(mem_ctx, dst_reg, impl->reg_alloc);
+
+   foreach_list_typed(nir_register, reg, node, &impl->registers) {
+      unsigned array_elems =
+         reg->num_array_elems == 0 ? 1 : reg->num_array_elems;
+      unsigned size = array_elems * reg->num_components;
+
+      nir_locals[reg->index] = dst_reg(GRF, alloc.allocate(size));
+   }
+
+   nir_emit_cf_list(&impl->body);
 }
 
 void
-- 
2.1.4