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patch 8.2.4669: in compiled code len('string') is not inlined

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Problem:    In compiled code len('string') is not inlined.
Solution:   Compute the length at compile time if possible. (closes #10065)
This commit is contained in:
LemonBoy 2022-04-02 21:59:06 +01:00 committed by Bram Moolenaar
parent 0dac1ab579
commit 58f331a05f
5 changed files with 23 additions and 5 deletions
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3
src/evalfunc.c
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@ -90,7 +90,6 @@ static void f_interrupt(typval_T *argvars, typval_T *rettv);
static void f_invert(typval_T *argvars, typval_T *rettv);
static void f_islocked(typval_T *argvars, typval_T *rettv);
static void f_last_buffer_nr(typval_T *argvars, typval_T *rettv);
static void f_len(typval_T *argvars, typval_T *rettv);
static void f_libcall(typval_T *argvars, typval_T *rettv);
static void f_libcallnr(typval_T *argvars, typval_T *rettv);
static void f_line(typval_T *argvars, typval_T *rettv);
@ -7019,7 +7018,7 @@ f_last_buffer_nr(typval_T *argvars UNUSED, typval_T *rettv)
/*
* "len()" function
*/
static void
void
f_len(typval_T *argvars, typval_T *rettv)
{
switch (argvars[0].v_type)

1
src/proto/evalfunc.pro
View File

@ -20,6 +20,7 @@ void execute_cmds_from_string(char_u *str);
void execute_common(typval_T *argvars, typval_T *rettv, int arg_off);
void f_exists(typval_T *argvars, typval_T *rettv);
void f_has(typval_T *argvars, typval_T *rettv);
void f_len(typval_T *argvars, typval_T *rettv);
int dynamic_feature(char_u *feature);
void mzscheme_call_vim(char_u *name, typval_T *args, typval_T *rettv);
void range_list_materialize(list_T *list);

13
src/testdir/test_vim9_disassemble.vim
View File

@ -1015,9 +1015,20 @@ def s:HasGuiRunning()
endif
enddef
def s:LenConstant(): number
return len("foo") + len("fighters")
enddef
def Test_disassemble_const_expr()
var instr = execute('disassemble LenConstant')
assert_match('LenConstant\_s*' ..
'return len("foo") + len("fighters")\_s*' ..
'\d PUSHNR 11\_s*',
instr)
assert_notmatch('BCALL len', instr)
assert_equal("\nyes", execute('HasEval()'))
var instr = execute('disassemble HasEval')
instr = execute('disassemble HasEval')
assert_match('HasEval\_s*' ..
'if has("eval")\_s*' ..
'echo "yes"\_s*' ..

2
src/version.c
View File

@ -750,6 +750,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
4669,
/**/
4668,
/**/

9
src/vim9expr.c
View File

@ -724,13 +724,16 @@ compile_call(
}
// We can evaluate "has('name')" at compile time.
// We can evaluate "len('string')" at compile time.
// We always evaluate "exists_compiled()" at compile time.
if ((varlen == 3 && STRNCMP(*arg, "has", 3) == 0)
if ((varlen == 3
&& (STRNCMP(*arg, "has", 3) == 0 || STRNCMP(*arg, "len", 3) == 0))
|| (varlen == 15 && STRNCMP(*arg, "exists_compiled", 6) == 0))
{
char_u *s = skipwhite(*arg + varlen + 1);
typval_T argvars[2];
int is_has = **arg == 'h';
int is_len = **arg == 'l';
argvars[0].v_type = VAR_UNKNOWN;
if (*s == '"')
@ -750,6 +753,8 @@ compile_call(
tv->vval.v_number = 0;
if (is_has)
f_has(argvars, tv);
else if (is_len)
f_len(argvars, tv);
else
f_exists(argvars, tv);
clear_tv(&argvars[0]);
@ -757,7 +762,7 @@ compile_call(
return OK;
}
clear_tv(&argvars[0]);
if (!is_has)
if (!is_has && !is_len)
{
emsg(_(e_argument_of_exists_compiled_must_be_literal_string));
return FAIL;