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