nir: Rename lower_double_pack to lower_64bit_pack

There's nothing "double" about it other than, perhaps, the fact that it
packs two 32-bit values.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/compiler/Makefile.sources

@@ -205,6 +205,7 @@ NIR_FILES = \
 	nir/nir_liveness.c \
 	nir/nir_loop_analyze.c \
 	nir/nir_loop_analyze.h \
+	nir/nir_lower_64bit_packing.c \
 	nir/nir_lower_alu_to_scalar.c \
 	nir/nir_lower_atomics.c \
 	nir/nir_lower_bitmap.c \
@@ -213,7 +214,6 @@ NIR_FILES = \
 	nir/nir_lower_clip_cull_distance_arrays.c \
 	nir/nir_lower_constant_initializers.c \
 	nir/nir_lower_double_ops.c \
-	nir/nir_lower_double_packing.c \
 	nir/nir_lower_drawpixels.c \
 	nir/nir_lower_global_vars_to_local.c \
 	nir/nir_lower_gs_intrinsics.c \

src/compiler/nir/nir.h

@@ -2549,7 +2549,7 @@ typedef enum {
 } nir_lower_doubles_options;
 
 void nir_lower_doubles(nir_shader *shader, nir_lower_doubles_options options);
-void nir_lower_double_pack(nir_shader *shader);
+void nir_lower_64bit_pack(nir_shader *shader);
 
 bool nir_normalize_cubemap_coords(nir_shader *shader);
 

src/compiler/nir/nir_lower_64bit_packing.c

@@ -49,7 +49,7 @@ lower_unpack_64(nir_builder *b, nir_ssa_def *src)
 }
 
 static void
-lower_double_pack_impl(nir_function_impl *impl)
+lower_64bit_pack_impl(nir_function_impl *impl)
 {
    nir_builder b;
    nir_builder_init(&b, impl);
@@ -88,11 +88,10 @@ lower_double_pack_impl(nir_function_impl *impl)
 }
 
 void
-nir_lower_double_pack(nir_shader *shader)
+nir_lower_64bit_pack(nir_shader *shader)
 {
    nir_foreach_function(function, shader) {
       if (function->impl)
-         lower_double_pack_impl(function->impl);
+         lower_64bit_pack_impl(function->impl);
    }
 }
-

src/mesa/drivers/dri/i965/brw_nir.c

@@ -511,7 +511,7 @@ nir_optimize(nir_shader *nir, const struct brw_compiler *compiler,
                                nir_lower_dfract |
                                nir_lower_dround_even |
                                nir_lower_dmod);
-      OPT_V(nir_lower_double_pack);
+      OPT_V(nir_lower_64bit_pack);
    } while (progress);
 
    return nir;