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py: Add n_state to mp_code_state_t struct.

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This value is used often enough that it is better to cache it instead of
decode it each time.
This commit is contained in:
Damien George
2019-09-24 15:57:08 +10:00
parent 4c5e1a0368
commit 81d04a0200
5 changed files with 12 additions and 5 deletions
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4
py/vm.c
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@@ -228,7 +228,7 @@ FRAME_SETUP();
mp_obj_t * /*const*/ fastn;
mp_exc_stack_t * /*const*/ exc_stack;
{
size_t n_state = mp_decode_uint_value(code_state->fun_bc->bytecode);
size_t n_state = code_state->n_state;
fastn = &code_state->state[n_state - 1];
exc_stack = (mp_exc_stack_t*)(code_state->state + n_state);
}
@@ -1499,7 +1499,7 @@ unwind_loop:
mp_nonlocal_free(code_state, sizeof(mp_code_state_t));
#endif
code_state = new_code_state;
size_t n_state = mp_decode_uint_value(code_state->fun_bc->bytecode);
size_t n_state = code_state->n_state;
fastn = &code_state->state[n_state - 1];
exc_stack = (mp_exc_stack_t*)(code_state->state + n_state);
// variables that are visible to the exception handler (declared volatile)