clean up dependencies of memoryview utility code snippets a bit to get rid of...

clean up dependencies of memoryview utility code snippets a bit to get rid of some 'unused function' C compiler warnings

Cython/Compiler/MemoryView.py

@@ -916,8 +916,7 @@ memviewslice_init_code = load_memview_c_utility(
     context=dict(context, BUF_MAX_NDIMS=Options.buffer_max_dims),
     requires=[memviewslice_declare_code,
               Buffer.acquire_utility_code,
-              atomic_utility,
-              Buffer.typeinfo_compare_code],
+              atomic_utility],
 )
 
 memviewslice_index_helpers = load_memview_c_utility("MemviewSliceIndex")

Cython/Utility/MemoryView.pyx

@@ -621,7 +621,7 @@ cdef memoryview_cwrapper(object o, int flags, bint dtype_is_object, __Pyx_TypeIn
     return result
 
 @cname('__pyx_memoryview_check')
-cdef bint memoryview_check(object o):
+cdef inline bint memoryview_check(object o):
     return isinstance(o, memoryview)
 
 cdef tuple _unellipsify(object index, int ndim):

Cython/Utility/MemoryView_C.c

@@ -93,16 +93,6 @@ static CYTHON_INLINE {{memviewslice_name}} {{funcname}}(PyObject *);
 #define __Pyx_IS_C_CONTIG 1
 #define __Pyx_IS_F_CONTIG 2
 
-static int __Pyx_ValidateAndInit_memviewslice(
-                int *axes_specs,
-                int c_or_f_flag,
-                int buf_flags,
-                int ndim,
-                __Pyx_TypeInfo *dtype,
-                __Pyx_BufFmt_StackElem stack[],
-                __Pyx_memviewslice *memviewslice,
-                PyObject *original_obj);
-
 static int __Pyx_init_memviewslice(
                 struct __pyx_memoryview_obj *memview,
                 int ndim,
@@ -129,6 +119,7 @@ static CYTHON_INLINE char *__pyx_memviewslice_index_full(
 
 
 /////////////// ObjectToMemviewSlice ///////////////
+//@requires: MemviewSliceValidateAndInit
 
 static CYTHON_INLINE {{memviewslice_name}} {{funcname}}(PyObject *obj) {
     {{memviewslice_name}} result = {{memslice_init}};
@@ -158,7 +149,20 @@ __pyx_fail:
 }
 
 
-////////// MemviewSliceInit //////////
+/////////////// MemviewSliceValidateAndInit.proto ///////////////
+
+static int __Pyx_ValidateAndInit_memviewslice(
+                int *axes_specs,
+                int c_or_f_flag,
+                int buf_flags,
+                int ndim,
+                __Pyx_TypeInfo *dtype,
+                __Pyx_BufFmt_StackElem stack[],
+                __Pyx_memviewslice *memviewslice,
+                PyObject *original_obj);
+
+/////////////// MemviewSliceValidateAndInit ///////////////
+//@requires: Buffer.c::TypeInfoCompare
 
 static int
 __pyx_check_strides(Py_buffer *buf, int dim, int ndim, int spec)
@@ -368,6 +372,9 @@ no_fail:
     return retval;
 }
 
+
+////////// MemviewSliceInit //////////
+
 static int
 __Pyx_init_memviewslice(struct __pyx_memoryview_obj *memview,
                         int ndim,