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/* Copyright (C) 2004 Free Software Foundation.
Check that constant folding and RTL simplification of -(x >> y) doesn't
break anything and produces the expected results.
Written by Roger Sayle, 11th March 2004. */
extern void abort (void);
#define INT_BITS (sizeof(int)*8)
int test1(int x)
{
return -(x >> (INT_BITS-1));
}
int test2(unsigned int x)
{
return -((int)(x >> (INT_BITS-1)));
}
int test3(int x)
{
int y;
y = INT_BITS-1;
return -(x >> y);
}
int test4(unsigned int x)
{
int y;
y = INT_BITS-1;
return -((int)(x >> y));
}
int main()
{
if (test1(0) != 0)
abort ();
if (test1(1) != 0)
abort ();
if (test1(-1) != 1)
abort ();
if (test2(0) != 0)
abort ();
if (test2(1) != 0)
abort ();
if (test2((unsigned int)-1) != -1)
abort ();
if (test3(0) != 0)
abort ();
if (test3(1) != 0)
abort ();
if (test3(-1) != 1)
abort ();
if (test4(0) != 0)
abort ();
if (test4(1) != 0)
abort ();
if (test4((unsigned int)-1) != -1)
abort ();
return 0;
}
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