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py/builtinimport: Remove weak links.

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In order to keep "import umodule" working, the existing mechanism is
replaced with a simple fallback to drop the "u".

This makes importing of built-ins no longer touch the filesystem, which
makes a typical built-in import take ~0.15ms rather than 3-5ms.

(Weak links were added in c14a81662c)

This work was funded through GitHub Sponsors.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
This commit is contained in:
Jim Mussared
2022-08-17 16:21:03 +10:00
parent 30628d1bb7
commit dfe232d000
9 changed files with 5 additions and 59 deletions
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docs/develop/porting.rst
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@@ -151,9 +151,6 @@ The following is an example of an ``mpconfigport.h`` file:
#define MICROPY_ERROR_REPORTING (MICROPY_ERROR_REPORTING_TERSE)
#define MICROPY_FLOAT_IMPL (MICROPY_FLOAT_IMPL_FLOAT)
// Enable u-modules to be imported with their standard name, like sys.
#define MICROPY_MODULE_WEAK_LINKS (1)
// Fine control over Python builtins, classes, modules, etc.
#define MICROPY_PY_ASYNC_AWAIT (0)
#define MICROPY_PY_BUILTINS_SET (0)