yann@1: --- /dev/null	Sat Dec 14 13:56:51 2002
yann@1: +++ gcc-3.3.1/gcc/testsuite/gcc.dg/pr11864-1.c	Sun Sep 14 14:32:24 2003
yann@1: @@ -0,0 +1,42 @@
yann@1: +/* PR optimization/11864
yann@1: + * Reporter: Kazumoto Kojima <kkojima@gcc.gnu.org>
yann@1: + * Summary: [3.3/3.4 regression] miscompiles zero extension and test
yann@1: + * Description:
yann@1: + * gcc-3.3/3.4 -O2 for sh target may miscompile the combination of zero extension
yann@1: + * and test if it's zero.
yann@1: + *
yann@1: + * Testcase tweaked by dank@kegel.com.  Not marked as xfail because it's a regression.
yann@1: + */
yann@1: +/* { dg-do run } */
yann@1: +/* { dg-options "-O2" } */
yann@1: +
yann@1: +extern void abort(void);
yann@1: +
yann@1: +int val = 0xff00;
yann@1: +
yann@1: +int f(void)
yann@1: +{
yann@1: +	return val;
yann@1: +}
yann@1: +
yann@1: +unsigned char a[1];
yann@1: +
yann@1: +void foo(void)
yann@1: +{
yann@1: +	a[0] = f() & 255;
yann@1: +
yann@1: +	if (!a[0])
yann@1: +		a[0] = f() & 255;
yann@1: +
yann@1: +	if (!a[0])
yann@1: +		a[0] = 1 + (f() & 127);
yann@1: +}
yann@1: +
yann@1: +int main(int argc, char **argv)
yann@1: +{
yann@1: +	foo();
yann@1: +	if (!a[0])
yann@1: +		abort();
yann@1: +
yann@1: +	return 0;
yann@1: +}