Dear Sir,
I am working with gcc 4.1.2 compiler in x86 system running Linux OS.
The following code snippet is taken from the link 'Global Null pointer test elimination', which appears in GCC-3.0 new features webpage.
foo (char *x)
{
char ret = *x;
if (x)
com();
else
bar();
return ret;
}
It is expected that the compiler will eliminate the pointer check with the option '-fdelete-null-pointer-checks' or with the option -O2, -O3, or -Os.
The expected assembly files with and without using the âfdelete-null-pointer-check has been provided in the same link. But while observing the compiler generated assembly, it is evident that the compiler is not eliminating the null-pointer check.
Please advice.
Thanks & Regards,
Sankar
