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py/emit: Combine break_loop and continue_loop into one emit function.

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Reduces code size by:

   bare-arm:    +0
minimal x86:    +0
   unix x64:   -80
unix nanbox:    +0
      stm32:   -12
     cc3200:    +0
    esp8266:   -28
      esp32:    +0
This commit is contained in:
Damien George 2018-05-22 21:50:22 +10:00
parent 6211d979ee
commit 8a513da5a5
4 changed files with 5 additions and 15 deletions
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4
py/compile.c
View File

@ -950,7 +950,7 @@ STATIC void compile_break_stmt(compiler_t *comp, mp_parse_node_struct_t *pns) {
compile_syntax_error(comp, (mp_parse_node_t)pns, "'break' outside loop");
}
assert(comp->cur_except_level >= comp->break_continue_except_level);
EMIT_ARG(break_loop, comp->break_label, comp->cur_except_level - comp->break_continue_except_level);
EMIT_ARG(unwind_jump, comp->break_label, comp->cur_except_level - comp->break_continue_except_level);
}
STATIC void compile_continue_stmt(compiler_t *comp, mp_parse_node_struct_t *pns) {
@ -958,7 +958,7 @@ STATIC void compile_continue_stmt(compiler_t *comp, mp_parse_node_struct_t *pns)
compile_syntax_error(comp, (mp_parse_node_t)pns, "'continue' outside loop");
}
assert(comp->cur_except_level >= comp->break_continue_except_level);
EMIT_ARG(continue_loop, comp->continue_label, comp->cur_except_level - comp->break_continue_except_level);
EMIT_ARG(unwind_jump, comp->continue_label, comp->cur_except_level - comp->break_continue_except_level);
}
STATIC void compile_return_stmt(compiler_t *comp, mp_parse_node_struct_t *pns) {

5
py/emit.h
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@ -122,8 +122,7 @@ typedef struct _emit_method_table_t {
void (*jump)(emit_t *emit, mp_uint_t label);
void (*pop_jump_if)(emit_t *emit, bool cond, mp_uint_t label);
void (*jump_if_or_pop)(emit_t *emit, bool cond, mp_uint_t label);
void (*break_loop)(emit_t *emit, mp_uint_t label, mp_uint_t except_depth);
void (*continue_loop)(emit_t *emit, mp_uint_t label, mp_uint_t except_depth);
void (*unwind_jump)(emit_t *emit, mp_uint_t label, mp_uint_t except_depth);
void (*setup_with)(emit_t *emit, mp_uint_t label);
void (*with_cleanup)(emit_t *emit, mp_uint_t label);
void (*setup_except)(emit_t *emit, mp_uint_t label);
@ -227,8 +226,6 @@ void mp_emit_bc_jump(emit_t *emit, mp_uint_t label);
void mp_emit_bc_pop_jump_if(emit_t *emit, bool cond, mp_uint_t label);
void mp_emit_bc_jump_if_or_pop(emit_t *emit, bool cond, mp_uint_t label);
void mp_emit_bc_unwind_jump(emit_t *emit, mp_uint_t label, mp_uint_t except_depth);
#define mp_emit_bc_break_loop mp_emit_bc_unwind_jump
#define mp_emit_bc_continue_loop mp_emit_bc_unwind_jump
void mp_emit_bc_setup_with(emit_t *emit, mp_uint_t label);
void mp_emit_bc_with_cleanup(emit_t *emit, mp_uint_t label);
void mp_emit_bc_setup_except(emit_t *emit, mp_uint_t label);

1
py/emitbc.c
View File

@ -967,7 +967,6 @@ const emit_method_table_t emit_bc_method_table = {
mp_emit_bc_pop_jump_if,
mp_emit_bc_jump_if_or_pop,
mp_emit_bc_unwind_jump,
mp_emit_bc_unwind_jump,
mp_emit_bc_setup_with,
mp_emit_bc_with_cleanup,
mp_emit_bc_setup_except,

10
py/emitnative.c
View File

@ -1560,16 +1560,11 @@ STATIC void emit_native_jump_if_or_pop(emit_t *emit, bool cond, mp_uint_t label)
emit_post(emit);
}
STATIC void emit_native_break_loop(emit_t *emit, mp_uint_t label, mp_uint_t except_depth) {
STATIC void emit_native_unwind_jump(emit_t *emit, mp_uint_t label, mp_uint_t except_depth) {
(void)except_depth;
emit_native_jump(emit, label & ~MP_EMIT_BREAK_FROM_FOR); // TODO properly
}
STATIC void emit_native_continue_loop(emit_t *emit, mp_uint_t label, mp_uint_t except_depth) {
(void)except_depth;
emit_native_jump(emit, label); // TODO properly
}
STATIC void emit_native_setup_with(emit_t *emit, mp_uint_t label) {
// the context manager is on the top of the stack
// stack: (..., ctx_mgr)
@ -2248,8 +2243,7 @@ const emit_method_table_t EXPORT_FUN(method_table) = {
emit_native_jump,
emit_native_pop_jump_if,
emit_native_jump_if_or_pop,
emit_native_break_loop,
emit_native_continue_loop,
emit_native_unwind_jump,
emit_native_setup_with,
emit_native_with_cleanup,
emit_native_setup_except,