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Add string builtins to builtin_fnspec 

* builtins.c (builtin_fnspec): Add bzero, memcmp, memcmp_eq, bcmp,
	strncmp, strncmp_eq, strncasecmp, rindex, strlen, strlnen, strcasecmp,
	strcspn, strspn, strcmp, strcmp_eq.
This commit is contained in:
Jan Hubicka 2020-10-27 09:01:41 +01:00
parent 83220838dd
commit b53f709d92
1 changed files with 18 additions and 0 deletions
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18
gcc/builtins.c
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@ -12960,6 +12960,15 @@ builtin_fnspec (tree callee)
return ".cO3R3";
case BUILT_IN_BCOPY:
return ".cR3O3";
case BUILT_IN_BZERO:
return ".cO2";
case BUILT_IN_MEMCMP:
case BUILT_IN_MEMCMP_EQ:
case BUILT_IN_BCMP:
case BUILT_IN_STRNCMP:
case BUILT_IN_STRNCMP_EQ:
case BUILT_IN_STRNCASECMP:
return ".cR3R3";
/* The following functions read memory pointed to by their
first argument. */
@ -12987,9 +12996,13 @@ builtin_fnspec (tree callee)
return ".cR ";
case BUILT_IN_INDEX:
case BUILT_IN_RINDEX:
case BUILT_IN_STRCHR:
case BUILT_IN_STRLEN:
case BUILT_IN_STRRCHR:
return ".cR ";
case BUILT_IN_STRNLEN:
return ".cR2";
/* These read memory pointed to by the first argument.
Allocating memory does not have any side-effects apart from
@ -13014,6 +13027,11 @@ builtin_fnspec (tree callee)
/* These read memory pointed to by the first and second arguments. */
case BUILT_IN_STRSTR:
case BUILT_IN_STRPBRK:
case BUILT_IN_STRCASECMP:
case BUILT_IN_STRCSPN:
case BUILT_IN_STRSPN:
case BUILT_IN_STRCMP:
case BUILT_IN_STRCMP_EQ:
return ".cR R ";
/* Freeing memory kills the pointed-to memory. More importantly
the call has to serve as a barrier for moving loads and stores