diff options
| author | Jim Mussared <jim.mussared@gmail.com> | 2021-08-19 17:49:33 +1000 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2021-08-20 20:18:52 +1000 |
| commit | b51e7e9d01a696cdfefada2e374db51752d1b803 (patch) | |
| tree | e0ba775ecfe9f5564cf691864abe8e4404e67d75 | |
| parent | 61d5a8b9ceab474d4137be53b422f5ece70c61a0 (diff) | |
stm32: Disable computed goto on constrained boards.
Saves ~1kiB. Add comment to this effect to mpconfig.h.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
| -rw-r--r-- | ports/stm32/boards/B_L072Z_LRWAN1/mpconfigboard.h | 1 | ||||
| -rw-r--r-- | ports/stm32/boards/NUCLEO_F091RC/mpconfigboard.h | 1 | ||||
| -rw-r--r-- | ports/stm32/boards/NUCLEO_L073RZ/mpconfigboard.h | 1 | ||||
| -rw-r--r-- | ports/stm32/mpconfigport.h | 2 | ||||
| -rw-r--r-- | py/mpconfig.h | 3 |
5 files changed, 7 insertions, 1 deletions
diff --git a/ports/stm32/boards/B_L072Z_LRWAN1/mpconfigboard.h b/ports/stm32/boards/B_L072Z_LRWAN1/mpconfigboard.h index 08ded0e03..dfcca72af 100644 --- a/ports/stm32/boards/B_L072Z_LRWAN1/mpconfigboard.h +++ b/ports/stm32/boards/B_L072Z_LRWAN1/mpconfigboard.h @@ -7,6 +7,7 @@ #define MICROPY_EMIT_THUMB (0) #define MICROPY_EMIT_INLINE_THUMB (0) +#define MICROPY_OPT_COMPUTED_GOTO (0) #define MICROPY_PY_BUILTINS_COMPLEX (0) #define MICROPY_PY_GENERATOR_PEND_THROW (0) #define MICROPY_PY_MATH (0) diff --git a/ports/stm32/boards/NUCLEO_F091RC/mpconfigboard.h b/ports/stm32/boards/NUCLEO_F091RC/mpconfigboard.h index 7333dcd0c..a0bff5996 100644 --- a/ports/stm32/boards/NUCLEO_F091RC/mpconfigboard.h +++ b/ports/stm32/boards/NUCLEO_F091RC/mpconfigboard.h @@ -3,6 +3,7 @@ #define MICROPY_EMIT_THUMB (0) #define MICROPY_EMIT_INLINE_THUMB (0) +#define MICROPY_OPT_COMPUTED_GOTO (0) #define MICROPY_PY_USOCKET (0) #define MICROPY_PY_NETWORK (0) #define MICROPY_PY_STM (0) diff --git a/ports/stm32/boards/NUCLEO_L073RZ/mpconfigboard.h b/ports/stm32/boards/NUCLEO_L073RZ/mpconfigboard.h index 331fc95ca..c8c809eb4 100644 --- a/ports/stm32/boards/NUCLEO_L073RZ/mpconfigboard.h +++ b/ports/stm32/boards/NUCLEO_L073RZ/mpconfigboard.h @@ -7,6 +7,7 @@ #define MICROPY_EMIT_THUMB (0) #define MICROPY_EMIT_INLINE_THUMB (0) +#define MICROPY_OPT_COMPUTED_GOTO (0) #define MICROPY_PY_BUILTINS_COMPLEX (0) #define MICROPY_PY_GENERATOR_PEND_THROW (0) #define MICROPY_PY_MATH (0) diff --git a/ports/stm32/mpconfigport.h b/ports/stm32/mpconfigport.h index fc84171b2..6f97377d9 100644 --- a/ports/stm32/mpconfigport.h +++ b/ports/stm32/mpconfigport.h @@ -56,7 +56,9 @@ #define MICROPY_COMP_RETURN_IF_EXPR (1) // optimisations +#ifndef MICROPY_OPT_COMPUTED_GOTO #define MICROPY_OPT_COMPUTED_GOTO (1) +#endif #define MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE (0) #define MICROPY_OPT_MPZ_BITWISE (1) #define MICROPY_OPT_MATH_FACTORIAL (1) diff --git a/py/mpconfig.h b/py/mpconfig.h index 2e83c90c5..db2aec3bf 100644 --- a/py/mpconfig.h +++ b/py/mpconfig.h @@ -483,7 +483,8 @@ /* Optimisations */ // Whether to use computed gotos in the VM, or a switch -// Computed gotos are roughly 10% faster, and increase VM code size by a little +// Computed gotos are roughly 10% faster, and increase VM code size by a little, +// e.g. ~1kiB on Cortex M4. // Note: enabling this will use the gcc-specific extensions of ranged designated // initialisers and addresses of labels, which are not part of the C99 standard. #ifndef MICROPY_OPT_COMPUTED_GOTO |