Viewing file:  pr94613.c (1.1 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* { dg-do run } */
/* { dg-require-effective-target s390_vx } */
/* { dg-options "-O3 -mzarch -march=arch13 -mzvector -std=gnu99 --save-temps" } */
#include <vecintrin.h>
/* The initial implementation of vec_sel used an IF_THEN_ELSE rtx.
This did NOT match what the vsel instruction does. vsel is a
bit-wise operation. Using IF_THEN_ELSE made the + operation to be
simplified away in combine. A plus operation affects other bits in
the same element. Hence per-element simplifications are wrong for
vsel. */
vector unsigned char __attribute__((noinline))
foo (vector unsigned char a, vector unsigned char b, vector unsigned char c)
{
return vec_sel (a + b, c, a);
}
/* FIXME: The OR operation still should be optimized away in that case. */
vector unsigned char __attribute__((noinline))
bar (vector unsigned char a, vector unsigned char b, vector unsigned char c)
{
return vec_sel (a | b, c, a);
}
int
main ()
{
vector unsigned char v = (vector unsigned char){ 1 };
if (foo (v, v, v)[0] != 3)
__builtin_abort ();
if (bar (v, v, v)[0] != 1)
__builtin_abort ();
return 0;
}
|
