https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64621
Bug ID: 64621
Summary: MIssed tail call oppurtunity
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: hubicka at gcc dot gnu.org
Compiling the following at x86_64:
extern long int strtol (__const char *__restrict __nptr,
char **__restrict __endptr, int __base)
__attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1))) ;
extern __inline int
__attribute__ ((__nothrow__)) atoi (__const char *__nptr)
{
return (int) strtol (__nptr, (char **) ((void *)0), 10);
}
will not produce tailcall even though it is perfectly possible because of the
extra (int) conversion that is noop and could be ignored.
