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Re: PATCH: Replace __aligned__(16) with __aligned__(__BIGGEST_ALIGNMENT__)


On Tue, 2009-05-05 at 15:20 -0700, H.J. Lu wrote:
> Hi,
> 
> Vector tests won't work if vector alignment > 16. This patch repalces
> __aligned__(16) with __BIGGEST_ALIGNMENT__.  Tested on Linux/Intel64.
> OK for trunk?
> 
> Thanks.

Auto-vectorizer maintainers, would one of you please review this?

Janis

> ---
> 2009-05-05  H.J. Lu  <hongjiu.lu@intel.com>
> 
> 	* gcc.dg/vect/no-vfa-vect-37.c: Replace __aligned__(16) with
> 	__aligned__(__BIGGEST_ALIGNMENT__).
> 	* gcc.dg/vect/no-vfa-vect-43.c: Likewise.
> 	* gcc.dg/vect/no-vfa-vect-49.c: Likewise.
> 	* gcc.dg/vect/no-vfa-vect-53.c: Likewise.
> 	* gcc.dg/vect/no-vfa-vect-57.c: Likewise.
> 	* gcc.dg/vect/no-vfa-vect-61.c: Likewise.
> 	* gcc.dg/vect/no-vfa-vect-79.c: Likewise.
> 	* gcc.dg/vect/Os-vect-95.c: Likewise.
> 	* gcc.dg/vect/pr20122.c: Likewise.
> 	* gcc.dg/vect/pr36493.c: Likewise.
> 	* gcc.dg/vect/pr37385.c: Likewise.
> 	* gcc.dg/vect/slp-7.c: Likewise.
> 	* gcc.dg/vect/slp-9.c: Likewise.
> 	* gcc.dg/vect/slp-widen-mult-s16.c: Likewise.
> 	* gcc.dg/vect/slp-widen-mult-u8.c: Likewise.
> 	* gcc.dg/vect/vect-35.c: Likewise.
> 	* gcc.dg/vect/vect-40.c: Likewise.
> 	* gcc.dg/vect/vect-42.c: Likewise.
> 	* gcc.dg/vect/vect-44.c: Likewise.
> 	* gcc.dg/vect/vect-46.c: Likewise.
> 	* gcc.dg/vect/vect-48.c: Likewise.
> 	* gcc.dg/vect/vect-52.c: Likewise.
> 	* gcc.dg/vect/vect-54.c: Likewise.
> 	* gcc.dg/vect/vect-56.c: Likewise.
> 	* gcc.dg/vect/vect-58.c: Likewise.
> 	* gcc.dg/vect/vect-60.c: Likewise.
> 	* gcc.dg/vect/vect-74.c: Likewise.
> 	* gcc.dg/vect/vect-75.c: Likewise.
> 	* gcc.dg/vect/vect-76.c: Likewise.
> 	* gcc.dg/vect/vect-77-alignchecks.c: Likewise.
> 	* gcc.dg/vect/vect-77.c: Likewise.
> 	* gcc.dg/vect/vect-77-global.c: Likewise.
> 	* gcc.dg/vect/vect-78-alignchecks.c: Likewise.
> 	* gcc.dg/vect/vect-78.c: Likewise.
> 	* gcc.dg/vect/vect-78-global.c: Likewise.
> 	* gcc.dg/vect/vect-80.c: Likewise.
> 	* gcc.dg/vect/vect-85.c: Likewise.
> 	* gcc.dg/vect/vect-87.c: Likewise.
> 	* gcc.dg/vect/vect-88.c: Likewise.
> 	* gcc.dg/vect/vect-92.c: Likewise.
> 	* gcc.dg/vect/vect-93.c: Likewise.
> 	* gcc.dg/vect/vect-95.c: Likewise.
> 	* gcc.dg/vect/vect-97.c: Likewise.
> 	* gcc.dg/vect/vect-complex-1.c: Likewise.
> 	* gcc.dg/vect/vect-complex-4.c: Likewise.
> 	* gcc.dg/vect/vect-complex-5.c: Likewise.
> 	* gcc.dg/vect/vect-multitypes-10.c: Likewise.
> 	* gcc.dg/vect/vect-multitypes-11.c: Likewise.
> 	* gcc.dg/vect/vect-multitypes-12.c: Likewise.
> 	* gcc.dg/vect/vect-multitypes-13.c: Likewise.
> 	* gcc.dg/vect/vect-multitypes-14.c: Likewise.
> 	* gcc.dg/vect/vect-multitypes-15.c: Likewise.
> 	* gcc.dg/vect/vect-multitypes-16.c: Likewise.
> 	* gcc.dg/vect/vect-multitypes-17.c: Likewise.
> 	* gcc.dg/vect/vect-multitypes-3.c: Likewise.
> 	* gcc.dg/vect/vect-multitypes-6.c: Likewise.
> 	* gcc.dg/vect/vect-multitypes-7.c: Likewise.
> 	* gcc.dg/vect/vect-multitypes-8.c: Likewise.
> 	* gcc.dg/vect/vect-multitypes-9.c: Likewise.
> 	* gcc.dg/vect/vect-outer-1a.c: Likewise.
> 	* gcc.dg/vect/vect-outer-1.c: Likewise.
> 	* gcc.dg/vect/vect-outer-2a.c: Likewise.
> 	* gcc.dg/vect/vect-outer-2b.c: Likewise.
> 	* gcc.dg/vect/vect-outer-2.c: Likewise.
> 	* gcc.dg/vect/vect-outer-2c.c: Likewise.
> 	* gcc.dg/vect/vect-outer-2d.c: Likewise.
> 	* gcc.dg/vect/vect-outer-3a.c: Likewise.
> 	* gcc.dg/vect/vect-outer-3b.c: Likewise.
> 	* gcc.dg/vect/vect-outer-3.c: Likewise.
> 	* gcc.dg/vect/vect-outer-3c.c: Likewise.
> 	* gcc.dg/vect/vect-outer-5.c: Likewise.
> 	* gcc.dg/vect/vect-outer-6.c: Likewise.
> 	* gcc.dg/vect/vect-reduc-dot-s16a.c: Likewise.
> 	* gcc.dg/vect/vect-reduc-dot-s16b.c: Likewise.
> 	* gcc.dg/vect/vect-reduc-dot-s8a.c: Likewise.
> 	* gcc.dg/vect/vect-reduc-dot-s8b.c: Likewise.
> 	* gcc.dg/vect/vect-reduc-dot-s8c.c: Likewise.
> 	* gcc.dg/vect/vect-reduc-dot-u16a.c: Likewise.
> 	* gcc.dg/vect/vect-reduc-dot-u16b.c: Likewise.
> 	* gcc.dg/vect/vect-reduc-dot-u8a.c: Likewise.
> 	* gcc.dg/vect/vect-reduc-dot-u8b.c: Likewise.
> 	* gcc.dg/vect/vect-widen-mult-s16.c: Likewise.
> 	* gcc.dg/vect/vect-widen-mult-s8.c: Likewise.
> 	* gcc.dg/vect/vect-widen-mult-u16.c: Likewise.
> 	* gcc.dg/vect/vect-widen-mult-u8.c: Likewise.
> 	* gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c: Likewise.
> 
> Index: gcc.dg/vect/vect-reduc-dot-s16b.c
> ===================================================================
> --- gcc.dg/vect/vect-reduc-dot-s16b.c	(revision 5847)
> +++ gcc.dg/vect/vect-reduc-dot-s16b.c	(working copy)
> @@ -7,8 +7,8 @@
> 
>  #define DOT 43680
> 
> -signed short X[N] __attribute__ ((__aligned__(16)));
> -signed short Y[N] __attribute__ ((__aligned__(16)));
> +signed short X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +signed short Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  /* short->short->int dot product.  Should be vectorized on architectures
>     supporting vectorized multiplication of two short args with short result,
> Index: gcc.dg/vect/vect-multitypes-14.c
> ===================================================================
> --- gcc.dg/vect/vect-multitypes-14.c	(revision 5847)
> +++ gcc.dg/vect/vect-multitypes-14.c	(working copy)
> @@ -5,9 +5,9 @@
> 
>  #define N 64
> 
> -unsigned char uX[N] __attribute__ ((__aligned__(16)));
> +unsigned char uX[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  unsigned char uresultX[N];
> -unsigned int uY[N] __attribute__ ((__aligned__(16)));
> +unsigned int uY[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  unsigned char uresultY[N];
> 
>  /* Unsigned type demotion (si->qi) */
> Index: gcc.dg/vect/no-vfa-vect-53.c
> ===================================================================
> --- gcc.dg/vect/no-vfa-vect-53.c	(revision 5847)
> +++ gcc.dg/vect/no-vfa-vect-53.c	(working copy)
> @@ -31,7 +31,7 @@ void bar (const float *pa, const float *
>  __attribute__ ((noinline)) int
>  main1 (int n, float *pb, float *pc)
>  {
> -  float pa[N] __attribute__ ((__aligned__(16)));
> +  float pa[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>    int i;
> 
>    for (i = 0; i < n; i++)
> @@ -47,9 +47,9 @@ main1 (int n, float *pb, float *pc)
>  int main (void)
>  {
>    int i;
> -  float a[N] __attribute__ ((__aligned__(16)));
> -  float b[N+1] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60};
> -  float c[N+1] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20};
> +  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +  float b[N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60};
> +  float c[N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20};
> 
>    check_vect ();
> 
> Index: gcc.dg/vect/vect-reduc-dot-u8a.c
> ===================================================================
> --- gcc.dg/vect/vect-reduc-dot-u8a.c	(revision 5847)
> +++ gcc.dg/vect/vect-reduc-dot-u8a.c	(working copy)
> @@ -7,8 +7,8 @@
> 
>  #define DOT 43680
> 
> -unsigned char X[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> -unsigned char Y[N] __attribute__ ((__aligned__(16))) = {64,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1};
> +unsigned char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> +unsigned char Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {64,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1};
> 
>  /* char->short->int dot product. 
>     Detected as a dot-product pattern.
> Index: gcc.dg/vect/vect-92.c
> ===================================================================
> --- gcc.dg/vect/vect-92.c	(revision 5847)
> +++ gcc.dg/vect/vect-92.c	(working copy)
> @@ -5,9 +5,9 @@
> 
>  #define N 256
> 
> -float pa[N] __attribute__ ((__aligned__(16)));
> -float pb[N] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> -float pc[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> +float pa[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +float pb[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> +float pc[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> 
>  /* Check handling of unaligned accesses when the misalignment is
>     known at compile time and different accesses have the same
> Index: gcc.dg/vect/pr36493.c
> ===================================================================
> --- gcc.dg/vect/pr36493.c	(revision 5847)
> +++ gcc.dg/vect/pr36493.c	(working copy)
> @@ -6,7 +6,7 @@ int
>  main (void)
>  {
>    int i;
> -  long x[12] __attribute__((aligned(16)));
> +  long x[12] __attribute__((aligned(__BIGGEST_ALIGNMENT__)));
> 
>    x[0] = 1;
>    for (i = 0; i < 12; i++)
> Index: gcc.dg/vect/vect-75.c
> ===================================================================
> --- gcc.dg/vect/vect-75.c	(revision 5847)
> +++ gcc.dg/vect/vect-75.c	(working copy)
> @@ -10,7 +10,7 @@
>     the expression that represents the first location accessed - is
>     more involved than just an ssa_name.  */
> 
> -int ib[N+OFF] __attribute__ ((__aligned__(16))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
> +int ib[N+OFF] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
> 
>  __attribute__ ((noinline))
>  int main1 (int *ib)
> Index: gcc.dg/vect/vect-58.c
> ===================================================================
> --- gcc.dg/vect/vect-58.c	(revision 5847)
> +++ gcc.dg/vect/vect-58.c	(working copy)
> @@ -26,7 +26,7 @@ void bar (float *pa, float *pb, float *p
>     vect-54.c is similar to this one with one difference:
>          the loop bound is known.  */
> 
> -float a[N] __attribute__ ((__aligned__(16)));  float b[N] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};  float c[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> +float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));  float b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};  float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> 
>  __attribute__ ((noinline)) int
>  main1 (int n)
> Index: gcc.dg/vect/vect-outer-2b.c
> ===================================================================
> --- gcc.dg/vect/vect-outer-2b.c	(revision 5847)
> +++ gcc.dg/vect/vect-outer-2b.c	(working copy)
> @@ -3,7 +3,7 @@
>  #include "tree-vect.h"
> 
>  #define N 40
> -float image[2*N][N][N] __attribute__ ((__aligned__(16)));
> +float image[2*N][N][N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  __attribute__ ((noinline)) void
>  foo (){
> Index: gcc.dg/vect/vect-complex-5.c
> ===================================================================
> --- gcc.dg/vect/vect-complex-5.c	(revision 5847)
> +++ gcc.dg/vect/vect-complex-5.c	(working copy)
> @@ -11,11 +11,11 @@ struct foostr {
>    _Complex short f2;
>  };
> 
> -_Complex short a1[64] __attribute__ ((__aligned__(16)));
> -_Complex short a2[64] __attribute__ ((__aligned__(16)));
> -_Complex short b1[64] __attribute__ ((__aligned__(16)));
> -_Complex short b2[64] __attribute__ ((__aligned__(16)));
> -struct foostr c[64] __attribute__ ((__aligned__(16)));
> +_Complex short a1[64] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +_Complex short a2[64] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +_Complex short b1[64] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +_Complex short b2[64] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +struct foostr c[64] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  __attribute__ ((noinline)) void
>  foo (void)
> Index: gcc.dg/vect/vect-42.c
> ===================================================================
> --- gcc.dg/vect/vect-42.c	(revision 5847)
> +++ gcc.dg/vect/vect-42.c	(working copy)
> @@ -30,8 +30,8 @@ __attribute__ ((noinline)) int
>  main1 (float * __restrict__ pa)
>  {
>    int i;
> -  float pb[N] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> -  float pc[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> +  float pb[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> +  float pc[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> 
>    for (i = 0; i < N; i++)
>      {
> @@ -44,9 +44,9 @@ main1 (float * __restrict__ pa)
>  int main (void)
>  {
>    int i;
> -  float a[N] __attribute__ ((__aligned__(16)));
> -  float b[N] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> -  float c[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> +  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +  float b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> +  float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> 
>    check_vect ();
> 
> Index: gcc.dg/vect/vect-outer-3a.c
> ===================================================================
> --- gcc.dg/vect/vect-outer-3a.c	(revision 5847)
> +++ gcc.dg/vect/vect-outer-3a.c	(working copy)
> @@ -3,7 +3,7 @@
>  #include "tree-vect.h"
> 
>  #define N 40
> -float image[N][N+1] __attribute__ ((__aligned__(16)));
> +float image[N][N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  float out[N];
> 
>  /* Outer-loop vectorization with misaliged accesses in the inner-loop.  */
> Index: gcc.dg/vect/vect-multitypes-15.c
> ===================================================================
> --- gcc.dg/vect/vect-multitypes-15.c	(revision 5847)
> +++ gcc.dg/vect/vect-multitypes-15.c	(working copy)
> @@ -9,9 +9,9 @@
>  #define DOT1 43680
>  #define DOT2 -20832
> 
> -signed char X[N] __attribute__ ((__aligned__(16)));
> -signed char Y[N] __attribute__ ((__aligned__(16)));
> -unsigned char CX[N] __attribute__ ((__aligned__(16)));
> +signed char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +signed char Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +unsigned char CX[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  __attribute__ ((noinline)) void
>  foo1(int len) {
> Index: gcc.dg/vect/no-vfa-vect-37.c
> ===================================================================
> --- gcc.dg/vect/no-vfa-vect-37.c	(revision 5847)
> +++ gcc.dg/vect/no-vfa-vect-37.c	(working copy)
> @@ -4,8 +4,8 @@
>  #include "tree-vect.h"
> 
>  #define N 16
> -char x[N] __attribute__ ((__aligned__(16)));
> -char cb[N] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
> +char x[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +char cb[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
>   
>  __attribute__ ((noinline))
>  int main1 (char *y)
> Index: gcc.dg/vect/vect-reduc-dot-u8b.c
> ===================================================================
> --- gcc.dg/vect/vect-reduc-dot-u8b.c	(revision 5847)
> +++ gcc.dg/vect/vect-reduc-dot-u8b.c	(working copy)
> @@ -7,8 +7,8 @@
> 
>  #define DOT 43680
> 
> -unsigned char X[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> -unsigned char Y[N] __attribute__ ((__aligned__(16))) = {64,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1};
> +unsigned char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> +unsigned char Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {64,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1};
> 
>  /* char->short->short dot product. 
>     Detected as a dot-product pattern.
> Index: gcc.dg/vect/no-vfa-vect-79.c
> ===================================================================
> --- gcc.dg/vect/no-vfa-vect-79.c	(revision 5847)
> +++ gcc.dg/vect/no-vfa-vect-79.c	(working copy)
> @@ -5,9 +5,9 @@
> 
>  #define N 16
> 
> -float fa[N] __attribute__ ((__aligned__(16)));
> -float fb[N+4] __attribute__ ((__aligned__(16))) = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 7.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0};
> -float fc[N] __attribute__ ((__aligned__(16))) = {0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 7.5, 9.5, 10.5, 11.5, 12.5, 13.5, 14.5, 15.5};
> +float fa[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +float fb[N+4] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 7.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0};
> +float fc[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 7.5, 9.5, 10.5, 11.5, 12.5, 13.5, 14.5, 15.5};
> 
>  /* Like vect-80.c but the pointers are not annotated as restricted,
>     and therefore can't be antialiased.  */
> Index: gcc.dg/vect/vect-93.c
> ===================================================================
> --- gcc.dg/vect/vect-93.c	(revision 5847)
> +++ gcc.dg/vect/vect-93.c	(working copy)
> @@ -41,8 +41,8 @@ main1 (float *pa)
>  int main (void)
>  {
>    int i;
> -  float a[N] __attribute__ ((__aligned__(16)));
> -  float b[N] __attribute__ ((__aligned__(16)));
> +  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +  float b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>    check_vect ();
> 
> Index: gcc.dg/vect/pr37385.c
> ===================================================================
> --- gcc.dg/vect/pr37385.c	(revision 5847)
> +++ gcc.dg/vect/pr37385.c	(working copy)
> @@ -4,7 +4,7 @@
> 
>  typedef int int_t;
>  typedef void (*fun_t) (int);
> -fun_t fun_tab[400] __attribute__ ((__aligned__(16)));
> +fun_t fun_tab[400] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  void foo (int_t a);
> 
> Index: gcc.dg/vect/vect-76.c
> ===================================================================
> --- gcc.dg/vect/vect-76.c	(revision 5847)
> +++ gcc.dg/vect/vect-76.c	(working copy)
> @@ -10,7 +10,7 @@
>     the expression that represents the first location accessed - is
>     more involved than just an ssa_name.  */
> 
> -int ib[N+OFF] __attribute__ ((__aligned__(16))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10};
> +int ib[N+OFF] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10};
> 
>  __attribute__ ((noinline))
>  int main1 (int *pib)
> Index: gcc.dg/vect/vect-widen-mult-s16.c
> ===================================================================
> --- gcc.dg/vect/vect-widen-mult-s16.c	(revision 5847)
> +++ gcc.dg/vect/vect-widen-mult-s16.c	(working copy)
> @@ -5,8 +5,8 @@
> 
>  #define N 64
> 
> -short X[N] __attribute__ ((__aligned__(16)));
> -short Y[N] __attribute__ ((__aligned__(16)));
> +short X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +short Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  int result[N];
> 
>  /* short->int widening-mult */
> Index: gcc.dg/vect/vect-outer-2c.c
> ===================================================================
> --- gcc.dg/vect/vect-outer-2c.c	(revision 5847)
> +++ gcc.dg/vect/vect-outer-2c.c	(working copy)
> @@ -4,7 +4,7 @@
>  #include "tree-vect.h"
> 
>  #define N 40
> -float image[2*N][2*N][N] __attribute__ ((__aligned__(16)));
> +float image[2*N][2*N][N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  __attribute__ ((noinline)) void
>  foo (){
> Index: gcc.dg/vect/vect-outer-5.c
> ===================================================================
> --- gcc.dg/vect/vect-outer-5.c	(revision 5847)
> +++ gcc.dg/vect/vect-outer-5.c	(working copy)
> @@ -13,10 +13,10 @@ extern void abort(void); 
>  __attribute__ ((noinline)) 
>  int main1 ()
>  {  
> -  float A[N] __attribute__ ((__aligned__(16)));
> -  float B[N] __attribute__ ((__aligned__(16)));
> -  float C[N] __attribute__ ((__aligned__(16)));
> -  float D[N] __attribute__ ((__aligned__(16)));
> +  float A[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +  float B[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +  float C[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +  float D[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>    float E[4] = {0,1,2,480};
>    float s;
> 
> Index: gcc.dg/vect/slp-7.c
> ===================================================================
> --- gcc.dg/vect/slp-7.c	(revision 5847)
> +++ gcc.dg/vect/slp-7.c	(working copy)
> @@ -6,8 +6,8 @@
> 
>  #define N 8 
> 
> -unsigned int in[N*8]  __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> -unsigned short in2[N*16]  __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> +unsigned int in[N*8]  __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> +unsigned short in2[N*16]  __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> 
>  int
>  main1 ()
> Index: gcc.dg/vect/slp-widen-mult-u8.c
> ===================================================================
> --- gcc.dg/vect/slp-widen-mult-u8.c	(revision 5847)
> +++ gcc.dg/vect/slp-widen-mult-u8.c	(working copy)
> @@ -5,8 +5,8 @@
> 
>  #define N 64
> 
> -unsigned char X[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> -unsigned char Y[N] __attribute__ ((__aligned__(16))) = {64,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1};
> +unsigned char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> +unsigned char Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {64,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1};
> 
>  unsigned short result[N];
> 
> Index: gcc.dg/vect/vect-widen-mult-u8.c
> ===================================================================
> --- gcc.dg/vect/vect-widen-mult-u8.c	(revision 5847)
> +++ gcc.dg/vect/vect-widen-mult-u8.c	(working copy)
> @@ -5,8 +5,8 @@
> 
>  #define N 64
> 
> -unsigned char X[N] __attribute__ ((__aligned__(16)));
> -unsigned char Y[N] __attribute__ ((__aligned__(16)));
> +unsigned char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +unsigned char Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  unsigned short result[N];
> 
>  /* char->short widening-mult */
> Index: gcc.dg/vect/vect-multitypes-6.c
> ===================================================================
> --- gcc.dg/vect/vect-multitypes-6.c	(revision 5847)
> +++ gcc.dg/vect/vect-multitypes-6.c	(working copy)
> @@ -5,17 +5,17 @@
> 
>  #define N 32
> 
> -unsigned int ic[N] __attribute__ ((__aligned__(16))) = 
> +unsigned int ic[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = 
>  	{0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
> -unsigned int ib[N] __attribute__ ((__aligned__(16))) = 
> +unsigned int ib[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = 
>  	{0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
> -unsigned short sc[N] __attribute__ ((__aligned__(16))) = 
> +unsigned short sc[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = 
>  	{0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
> -unsigned short sb[N] __attribute__ ((__aligned__(16))) = 
> +unsigned short sb[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = 
>  	{0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
> -unsigned char cc[N] __attribute__ ((__aligned__(16))) = 
> +unsigned char cc[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = 
>  	{0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
> -unsigned char cb[N] __attribute__ ((__aligned__(16))) = 
> +unsigned char cb[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = 
>  	{0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
> 
>  __attribute__ ((noinline))
> Index: gcc.dg/vect/vect-60.c
> ===================================================================
> --- gcc.dg/vect/vect-60.c	(revision 5847)
> +++ gcc.dg/vect/vect-60.c	(working copy)
> @@ -30,14 +30,14 @@ void bar (float *pa, float *pb, float *p
>     vect-61.c is similar to this one with two differences:
>          aliasing is not a problem, and the write access has unknown alignment.  */
> 
> -float b[N] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> -float c[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> +float b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> +float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> 
>  __attribute__ ((noinline)) int
>  main1 (int n)
>  {
>    int i;
> -  float a[N] __attribute__ ((__aligned__(16)));
> +  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>    float *pa = a;
>    float *pb = b;
>    float *pc = c;
> Index: gcc.dg/vect/vect-77-global.c
> ===================================================================
> --- gcc.dg/vect/vect-77-global.c	(revision 5847)
> +++ gcc.dg/vect/vect-77-global.c	(working copy)
> @@ -10,7 +10,7 @@
>     the expression that represents the first location accessed - is
>     more involved than just an ssa_name.  */
> 
> -int ib[N+OFF] __attribute__ ((__aligned__(16))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
> +int ib[N+OFF] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
>  int ia[N];
> 
>  __attribute__ ((noinline))
> Index: gcc.dg/vect/vect-85.c
> ===================================================================
> --- gcc.dg/vect/vect-85.c	(revision 5847)
> +++ gcc.dg/vect/vect-85.c	(working copy)
> @@ -35,7 +35,7 @@ int main1 (int *a)
> 
>  int main (void)
>  { 
> -  int a[N] __attribute__ ((__aligned__(16)));
> +  int a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>    check_vect ();
> 
> Index: gcc.dg/vect/vect-outer-3b.c
> ===================================================================
> --- gcc.dg/vect/vect-outer-3b.c	(revision 5847)
> +++ gcc.dg/vect/vect-outer-3b.c	(working copy)
> @@ -3,7 +3,7 @@
>  #include "tree-vect.h"
> 
>  #define N 40
> -float image[N][N] __attribute__ ((__aligned__(16)));
> +float image[N][N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  float out[N];
> 
>  /* Outer-loop vectorization with non-consecutive access. Not vectorized yet.  */
> Index: gcc.dg/vect/vect-multitypes-16.c
> ===================================================================
> --- gcc.dg/vect/vect-multitypes-16.c	(revision 5847)
> +++ gcc.dg/vect/vect-multitypes-16.c	(working copy)
> @@ -5,7 +5,7 @@
> 
>  #define N 64
> 
> -char x[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> +char x[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> 
>  __attribute__ ((noinline)) int
>  foo (int len, long long *z) {
> Index: gcc.dg/vect/vect-52.c
> ===================================================================
> --- gcc.dg/vect/vect-52.c	(revision 5847)
> +++ gcc.dg/vect/vect-52.c	(working copy)
> @@ -18,7 +18,7 @@
>  __attribute__ ((noinline)) int
>  main1 (int n, float *pb, float *pc)
>  {
> -  float pa[N] __attribute__ ((__aligned__(16)));
> +  float pa[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>    int i;
> 
>    for (i = 0; i < n; i++)
> @@ -39,9 +39,9 @@ main1 (int n, float *pb, float *pc)
>  int main (void)
>  {
>    int i;
> -  float a[N] __attribute__ ((__aligned__(16)));
> -  float b[N+1] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60};
> -  float c[N+1] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20};
> +  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +  float b[N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60};
> +  float c[N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20};
> 
>    check_vect ();
> 
> Index: gcc.dg/vect/vect-35.c
> ===================================================================
> --- gcc.dg/vect/vect-35.c	(revision 5847)
> +++ gcc.dg/vect/vect-35.c	(working copy)
> @@ -9,8 +9,8 @@ __attribute__ ((noinline))
>  int main1 ()
>  {  
>    union {
> -    unsigned char a[N] __attribute__ ((__aligned__(16)));
> -    unsigned char b[N] __attribute__ ((__aligned__(16)));
> +    unsigned char a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +    unsigned char b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>    } s;
>    int i;
> 
> Index: gcc.dg/vect/vect-77.c
> ===================================================================
> --- gcc.dg/vect/vect-77.c	(revision 5847)
> +++ gcc.dg/vect/vect-77.c	(working copy)
> @@ -10,7 +10,7 @@
>     the expression that represents the first location accessed - is
>     more involved than just an ssa_name.  */
> 
> -int ib[N+OFF] __attribute__ ((__aligned__(16))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
> +int ib[N+OFF] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
> 
>  __attribute__ ((noinline))
>  int main1 (int *ib, int off)
> Index: gcc.dg/vect/vect-outer-2d.c
> ===================================================================
> --- gcc.dg/vect/vect-outer-2d.c	(revision 5847)
> +++ gcc.dg/vect/vect-outer-2d.c	(working copy)
> @@ -3,7 +3,7 @@
>  #include "tree-vect.h"
> 
>  #define N 40
> -float image[N][N][N+1] __attribute__ ((__aligned__(16)));
> +float image[N][N][N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  __attribute__ ((noinline)) void
>  foo (){
> Index: gcc.dg/vect/vect-outer-6.c
> ===================================================================
> --- gcc.dg/vect/vect-outer-6.c	(revision 5847)
> +++ gcc.dg/vect/vect-outer-6.c	(working copy)
> @@ -7,10 +7,10 @@
>  #define N 64
>  #define MAX 42
> 
> -float A[N] __attribute__ ((__aligned__(16)));
> -float B[N] __attribute__ ((__aligned__(16)));
> -float C[N] __attribute__ ((__aligned__(16)));
> -float D[N] __attribute__ ((__aligned__(16)));
> +float A[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +float B[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +float C[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +float D[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  extern void abort(void); 
> 
>  __attribute__ ((noinline))
> Index: gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c
> ===================================================================
> --- gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c	(revision 5847)
> +++ gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c	(working copy)
> @@ -7,8 +7,8 @@
> 
>  #define DOT -21856
> 
> -signed char X[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> -signed char Y[N] __attribute__ ((__aligned__(16))) = {64,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1};
> +signed char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> +signed char Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {64,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1};
> 
>  /* char->short->short dot product.
>     The dot-product pattern should be detected.
> Index: gcc.dg/vect/vect-multitypes-7.c
> ===================================================================
> --- gcc.dg/vect/vect-multitypes-7.c	(revision 5847)
> +++ gcc.dg/vect/vect-multitypes-7.c	(working copy)
> @@ -9,9 +9,9 @@
>  #define DOT1 43680
>  #define DOT2 -20832
> 
> -signed short X[N] __attribute__ ((__aligned__(16)));
> -signed short Y[N] __attribute__ ((__aligned__(16)));
> -unsigned char CX[N] __attribute__ ((__aligned__(16)));
> +signed short X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +signed short Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +unsigned char CX[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  __attribute__ ((noinline)) void
>  foo1(int len) {
> Index: gcc.dg/vect/vect-44.c
> ===================================================================
> --- gcc.dg/vect/vect-44.c	(revision 5847)
> +++ gcc.dg/vect/vect-44.c	(working copy)
> @@ -46,9 +46,9 @@ main1 (float * __restrict__ pa, float * 
>  int main (void)
>  {
>    int i;
> -  float a[N+4] __attribute__ ((__aligned__(16)));
> -  float b[N+4] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69};
> -  float c[N+4] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23};
> +  float a[N+4] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +  float b[N+4] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69};
> +  float c[N+4] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23};
> 
>    check_vect ();
> 
> Index: gcc.dg/vect/vect-outer-3c.c
> ===================================================================
> --- gcc.dg/vect/vect-outer-3c.c	(revision 5847)
> +++ gcc.dg/vect/vect-outer-3c.c	(working copy)
> @@ -3,7 +3,7 @@
>  #include "tree-vect.h"
> 
>  #define N 40
> -float image[N][N+1] __attribute__ ((__aligned__(16)));
> +float image[N][N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  float out[N];
> 
>  /* Outer-loop vectorization.  */
> Index: gcc.dg/vect/vect-multitypes-17.c
> ===================================================================
> --- gcc.dg/vect/vect-multitypes-17.c	(revision 5847)
> +++ gcc.dg/vect/vect-multitypes-17.c	(working copy)
> @@ -5,9 +5,9 @@
> 
>  #define N 64
> 
> -unsigned char uX[N] __attribute__ ((__aligned__(16))) = {16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1};
> +unsigned char uX[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1};
>  unsigned char uresultX[N];
> -unsigned long long uY[N] __attribute__ ((__aligned__(16))) = {16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1};
> +unsigned long long uY[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1};
>  unsigned char uresultY[N];
> 
>  /* Unsigned type demotion (si->qi) */
> Index: gcc.dg/vect/Os-vect-95.c
> ===================================================================
> --- gcc.dg/vect/Os-vect-95.c	(revision 5847)
> +++ gcc.dg/vect/Os-vect-95.c	(working copy)
> @@ -41,8 +41,8 @@ main1 (int n, float * __restrict__ pd, f
>  int main (void)
>  {
>    int i;
> -  float a[N] __attribute__ ((__aligned__(16)));
> -  float d[N+1] __attribute__ ((__aligned__(16)));
> +  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +  float d[N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>    float b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
>    float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> 
> Index: gcc.dg/vect/vect-95.c
> ===================================================================
> --- gcc.dg/vect/vect-95.c	(revision 5847)
> +++ gcc.dg/vect/vect-95.c	(working copy)
> @@ -42,8 +42,8 @@ main1 (int n, float * __restrict__ pd, f
>  int main (void)
>  {
>    int i;
> -  float a[N] __attribute__ ((__aligned__(16)));
> -  float d[N+1] __attribute__ ((__aligned__(16)));
> +  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +  float d[N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>    float b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
>    float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> 
> Index: gcc.dg/vect/vect-78.c
> ===================================================================
> --- gcc.dg/vect/vect-78.c	(revision 5847)
> +++ gcc.dg/vect/vect-78.c	(working copy)
> @@ -10,7 +10,7 @@
>     the expression that represents the first location accessed - is
>     more involved than just an ssa_name.  */
> 
> -int ib[N+OFF] __attribute__ ((__aligned__(16))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
> +int ib[N+OFF] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
>  int off = 8;
> 
>  __attribute__ ((noinline))
> Index: gcc.dg/vect/slp-9.c
> ===================================================================
> --- gcc.dg/vect/slp-9.c	(revision 5847)
> +++ gcc.dg/vect/slp-9.c	(working copy)
> @@ -5,8 +5,8 @@
> 
>  #define N 64
> 
> -short X[N] __attribute__ ((__aligned__(16)));
> -short Y[N] __attribute__ ((__aligned__(16)));
> +short X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +short Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  int result[N];
> 
>  /* short->int widening-mult */
> Index: gcc.dg/vect/vect-78-alignchecks.c
> ===================================================================
> --- gcc.dg/vect/vect-78-alignchecks.c	(revision 5847)
> +++ gcc.dg/vect/vect-78-alignchecks.c	(working copy)
> @@ -10,7 +10,7 @@
>     the expression that represents the first location accessed - is
>     more involved than just an ssa_name.  */
> 
> -int ib[N+OFF] __attribute__ ((__aligned__(16))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
> +int ib[N+OFF] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
>  int off = 8;
> 
>  __attribute__ ((noinline))
> Index: gcc.dg/vect/vect-multitypes-8.c
> ===================================================================
> --- gcc.dg/vect/vect-multitypes-8.c	(revision 5847)
> +++ gcc.dg/vect/vect-multitypes-8.c	(working copy)
> @@ -5,9 +5,9 @@
> 
>  #define N 64
> 
> -unsigned char uX[N] __attribute__ ((__aligned__(16)));
> +unsigned char uX[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  unsigned char uresultX[N];
> -unsigned int uY[N] __attribute__ ((__aligned__(16)));
> +unsigned int uY[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  unsigned short uresultY[N];
> 
>  /* Unsigned type demotion (si->hi) */
> Index: gcc.dg/vect/vect-multitypes-10.c
> ===================================================================
> --- gcc.dg/vect/vect-multitypes-10.c	(revision 5847)
> +++ gcc.dg/vect/vect-multitypes-10.c	(working copy)
> @@ -5,11 +5,11 @@
> 
>  #define N 64
> 
> -unsigned char uX[N] __attribute__ ((__aligned__(16)));
> -unsigned short uY[N] __attribute__ ((__aligned__(16)));
> +unsigned char uX[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +unsigned short uY[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  unsigned int uresult[N];
> -signed char X[N] __attribute__ ((__aligned__(16)));
> -signed short Y[N] __attribute__ ((__aligned__(16)));
> +signed char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +signed short Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  int result[N];
> 
>  /* Unsigned type promotion (hi->si) */
> Index: gcc.dg/vect/vect-87.c
> ===================================================================
> --- gcc.dg/vect/vect-87.c	(revision 5847)
> +++ gcc.dg/vect/vect-87.c	(working copy)
> @@ -35,7 +35,7 @@ int main1 (int n, int *a)
> 
>  int main (void)
>  { 
> -  int a[N] __attribute__ ((__aligned__(16)));
> +  int a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>    check_vect ();
> 
> Index: gcc.dg/vect/vect-reduc-dot-u16a.c
> ===================================================================
> --- gcc.dg/vect/vect-reduc-dot-u16a.c	(revision 5847)
> +++ gcc.dg/vect/vect-reduc-dot-u16a.c	(working copy)
> @@ -8,8 +8,8 @@
>  #define DOT1 43680
>  #define DOT2 43680
> 
> -unsigned short X[N] __attribute__ ((__aligned__(16)));
> -unsigned short Y[N] __attribute__ ((__aligned__(16)));
> +unsigned short X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +unsigned short Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  /* short->short->int dot product. 
>     Not detected as a dot-product pattern.
> Index: gcc.dg/vect/no-vfa-vect-57.c
> ===================================================================
> --- gcc.dg/vect/no-vfa-vect-57.c	(revision 5847)
> +++ gcc.dg/vect/no-vfa-vect-57.c	(working copy)
> @@ -43,8 +43,8 @@ __attribute__ ((noinline)) int
>  main1 (float *pa)
>  {
>    int i;
> -  float b[N] __attribute__ ((__aligned__(16)));
> -  float c[N] __attribute__ ((__aligned__(16)));
> +  float b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +  float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>    float *pb = b;
>    float *pc = c;
> 
> @@ -63,7 +63,7 @@ main1 (float *pa)
>  int main (void)
>  {
>    int i;
> -  float a[N] __attribute__ ((__aligned__(16)));
> +  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>    check_vect ();
>    main1 (a);
> Index: gcc.dg/vect/vect-reduc-dot-s8a.c
> ===================================================================
> --- gcc.dg/vect/vect-reduc-dot-s8a.c	(revision 5847)
> +++ gcc.dg/vect/vect-reduc-dot-s8a.c	(working copy)
> @@ -7,8 +7,8 @@
> 
>  #define DOT1 43680
> 
> -signed char X[N] __attribute__ ((__aligned__(16)));
> -signed char Y[N] __attribute__ ((__aligned__(16)));
> +signed char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +signed char Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  /* char->short->int dot product.
>     The dot-product pattern should be detected.
> Index: gcc.dg/vect/vect-54.c
> ===================================================================
> --- gcc.dg/vect/vect-54.c	(revision 5847)
> +++ gcc.dg/vect/vect-54.c	(working copy)
> @@ -26,14 +26,14 @@ void bar (float *pa, float *pb, float *p
>     vect-58.c is similar to this one with one difference:
>          the loop bound is unknown.  */
> 
> -float b[N] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> -float c[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> +float b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> +float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> 
>  __attribute__ ((noinline)) int
>  main1 ()
>  {
>    int i;
> -  float a[N] __attribute__ ((__aligned__(16)));
> +  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>    float *pa = a;
>    float *pb = b;
>    float *pc = c;
> Index: gcc.dg/vect/vect-complex-1.c
> ===================================================================
> --- gcc.dg/vect/vect-complex-1.c	(revision 5847)
> +++ gcc.dg/vect/vect-complex-1.c	(working copy)
> @@ -6,19 +6,19 @@
> 
>  #define N 16
> 
> -_Complex float a[N]  __attribute__ ((__aligned__(16))) =
> +_Complex float a[N]  __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) =
>      { 10.0F + 20.0iF, 11.0F + 21.0iF, 12.0F + 22.0iF, 13.0F + 23.0iF,
>        14.0F + 24.0iF, 15.0F + 25.0iF, 16.0F + 26.0iF, 17.0F + 27.0iF,
>        18.0F + 28.0iF, 19.0F + 29.0iF, 20.0F + 30.0iF, 21.0F + 31.0iF,
>        22.0F + 32.0iF, 23.0F + 33.0iF, 24.0F + 34.0iF, 25.0F + 35.0iF };
> -_Complex float b[N]  __attribute__ ((__aligned__(16))) =
> +_Complex float b[N]  __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) =
>      { 30.0F + 40.0iF, 31.0F + 41.0iF, 32.0F + 42.0iF, 33.0F + 43.0iF,
>        34.0F + 44.0iF, 35.0F + 45.0iF, 36.0F + 46.0iF, 37.0F + 47.0iF,
>        38.0F + 48.0iF, 39.0F + 49.0iF, 40.0F + 50.0iF, 41.0F + 51.0iF,
>        42.0F + 52.0iF, 43.0F + 53.0iF, 44.0F + 54.0iF, 45.0F + 55.0iF };
> 
> -_Complex float c[N] __attribute__ ((__aligned__(16)));
> -_Complex float res[N] __attribute__ ((__aligned__(16))) =
> +_Complex float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +_Complex float res[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) =
>      { 40.0F + 60.0iF, 42.0F + 62.0iF, 44.0F + 64.0iF, 46.0F + 66.0iF,
>        48.0F + 68.0iF, 50.0F + 70.0iF, 52.0F + 72.0iF, 54.0F + 74.0iF,
>        56.0F + 76.0iF, 58.0F + 78.0iF, 60.0F + 80.0iF, 62.0F + 82.0iF,
> Index: gcc.dg/vect/vect-77-alignchecks.c
> ===================================================================
> --- gcc.dg/vect/vect-77-alignchecks.c	(revision 5847)
> +++ gcc.dg/vect/vect-77-alignchecks.c	(working copy)
> @@ -10,7 +10,7 @@
>     the expression that represents the first location accessed - is
>     more involved than just an ssa_name.  */
> 
> -int ib[N+OFF] __attribute__ ((__aligned__(16))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
> +int ib[N+OFF] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
> 
>  __attribute__ ((noinline))
>  int main1 (int *ib, int off)
> Index: gcc.dg/vect/pr20122.c
> ===================================================================
> --- gcc.dg/vect/pr20122.c	(revision 5847)
> +++ gcc.dg/vect/pr20122.c	(working copy)
> @@ -3,7 +3,7 @@
>  #include <stdarg.h>
>  #include "tree-vect.h"
> 
> -short Kernshort[24] __attribute__ ((__aligned__(16)));
> +short Kernshort[24] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  static void VecBug(short Kernel[8][24]) __attribute__((noinline));
>  static void VecBug2(short Kernel[8][24]) __attribute__((noinline));
> 
> @@ -21,7 +21,7 @@ static void VecBug(short Kernel[8][24])
>  static void VecBug2(short Kernel[8][24])
>  {
>    int k,i;
> -  short Kernshort2[24] __attribute__ ((__aligned__(16)));
> +  short Kernshort2[24] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>      for (k = 0; k<8; k++)
>          for (i = 0; i<24; i++)
>              Kernshort2[i] = Kernel[k][i];
> @@ -36,7 +36,7 @@ int main (int argc, char **argv)
>  {
>      check_vect ();
> 
> -    short Kernel[8][24] __attribute__ ((__aligned__(16)));
> +    short Kernel[8][24] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>      int k,i;
> 
>      for (k = 0; k<8; k++)
> Index: gcc.dg/vect/no-vfa-vect-49.c
> ===================================================================
> --- gcc.dg/vect/no-vfa-vect-49.c	(revision 5847)
> +++ gcc.dg/vect/no-vfa-vect-49.c	(working copy)
> @@ -31,7 +31,7 @@ void bar (float *pa, float *pb, float *p
>  __attribute__ ((noinline)) int
>  main1 (float *pb, float *pc)
>  {
> -  float pa[N] __attribute__ ((__aligned__(16)));
> +  float pa[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>    int i;
> 
>    for (i = 0; i < N; i++)
> @@ -47,8 +47,8 @@ main1 (float *pb, float *pc)
>  int main (void)
>  {
>    int i;
> -  float b[N+1] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60};
> -  float c[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> +  float b[N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60};
> +  float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> 
>    check_vect ();
> 
> Index: gcc.dg/vect/vect-multitypes-9.c
> ===================================================================
> --- gcc.dg/vect/vect-multitypes-9.c	(revision 5847)
> +++ gcc.dg/vect/vect-multitypes-9.c	(working copy)
> @@ -5,9 +5,9 @@
> 
>  #define N 64
> 
> -unsigned char uX[N] __attribute__ ((__aligned__(16)));
> +unsigned char uX[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  unsigned short uresult[N];
> -signed char X[N] __attribute__ ((__aligned__(16)));
> +signed char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  short result[N];
> 
>  /* Unsigned type promotion (qi->hi) */
> Index: gcc.dg/vect/vect-80.c
> ===================================================================
> --- gcc.dg/vect/vect-80.c	(revision 5847)
> +++ gcc.dg/vect/vect-80.c	(working copy)
> @@ -5,9 +5,9 @@
> 
>  #define N 16
> 
> -float fa[N] __attribute__ ((__aligned__(16)));
> -float fb[N+4] __attribute__ ((__aligned__(16))) = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 7.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0};
> -float fc[N] __attribute__ ((__aligned__(16))) = {0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 7.5, 9.5, 10.5, 11.5, 12.5, 13.5, 14.5, 15.5};
> +float fa[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +float fb[N+4] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 7.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0};
> +float fc[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 7.5, 9.5, 10.5, 11.5, 12.5, 13.5, 14.5, 15.5};
> 
>  /* Check handling of accesses for which the "initial condition" -
>     the expression that represents the first location accessed - is
> Index: gcc.dg/vect/vect-46.c
> ===================================================================
> --- gcc.dg/vect/vect-46.c	(revision 5847)
> +++ gcc.dg/vect/vect-46.c	(working copy)
> @@ -30,7 +30,7 @@ __attribute__ ((noinline)) int
>  main1 (int n)
>  {
>    int i;
> -  float a[N] __attribute__ ((__aligned__(16)));  float b[N] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};  float c[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> +  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));  float b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};  float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
>    float *pa = a;
>    float *pb = b;
>    float *pc = c;
> Index: gcc.dg/vect/vect-multitypes-11.c
> ===================================================================
> --- gcc.dg/vect/vect-multitypes-11.c	(revision 5847)
> +++ gcc.dg/vect/vect-multitypes-11.c	(working copy)
> @@ -5,7 +5,7 @@
> 
>  #define N 64
> 
> -short x[N] __attribute__ ((__aligned__(16)));
> +short x[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  __attribute__ ((noinline)) int
>  foo (int len, int *z) {
> Index: gcc.dg/vect/vect-88.c
> ===================================================================
> --- gcc.dg/vect/vect-88.c	(revision 5847)
> +++ gcc.dg/vect/vect-88.c	(working copy)
> @@ -35,7 +35,7 @@ int main1 (int n, int *a)
> 
>  int main (void)
>  { 
> -  int a[N+1] __attribute__ ((__aligned__(16)));
> +  int a[N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>    check_vect ();
> 
> Index: gcc.dg/vect/vect-reduc-dot-u16b.c
> ===================================================================
> --- gcc.dg/vect/vect-reduc-dot-u16b.c	(revision 5847)
> +++ gcc.dg/vect/vect-reduc-dot-u16b.c	(working copy)
> @@ -7,8 +7,8 @@
> 
>  #define DOT2 43680
> 
> -unsigned short X[N] __attribute__ ((__aligned__(16)));
> -unsigned short Y[N] __attribute__ ((__aligned__(16)));
> +unsigned short X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +unsigned short Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  /* short->int->int dot product. 
>     Currently not detected as a dot-product pattern: the multiplication 
> Index: gcc.dg/vect/vect-reduc-dot-s8b.c
> ===================================================================
> --- gcc.dg/vect/vect-reduc-dot-s8b.c	(revision 5847)
> +++ gcc.dg/vect/vect-reduc-dot-s8b.c	(working copy)
> @@ -7,8 +7,8 @@
> 
>  #define DOT2 -21856
> 
> -signed char X[N] __attribute__ ((__aligned__(16)));
> -signed char Y[N] __attribute__ ((__aligned__(16)));
> +signed char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +signed char Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  /* char->short->short dot product.
>     The dot-product pattern should be detected.
> Index: gcc.dg/vect/vect-outer-1.c
> ===================================================================
> --- gcc.dg/vect/vect-outer-1.c	(revision 5847)
> +++ gcc.dg/vect/vect-outer-1.c	(working copy)
> @@ -1,9 +1,9 @@
>  /* { dg-do compile } */
> 
>  #define N 64
> -signed short image[N][N] __attribute__ ((__aligned__(16)));
> -signed short block[N][N] __attribute__ ((__aligned__(16)));
> -signed short out[N] __attribute__ ((__aligned__(16)));
> +signed short image[N][N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +signed short block[N][N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +signed short out[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  /* Can't do outer-loop vectorization because of non-consecutive access. */
> 
> Index: gcc.dg/vect/vect-widen-mult-u16.c
> ===================================================================
> --- gcc.dg/vect/vect-widen-mult-u16.c	(revision 5847)
> +++ gcc.dg/vect/vect-widen-mult-u16.c	(working copy)
> @@ -5,8 +5,8 @@
> 
>  #define N 64
> 
> -unsigned short X[N] __attribute__ ((__aligned__(16)));
> -unsigned short Y[N] __attribute__ ((__aligned__(16)));
> +unsigned short X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +unsigned short Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  unsigned int result[N];
> 
>  /* short->int widening-mult */
> Index: gcc.dg/vect/vect-97.c
> ===================================================================
> --- gcc.dg/vect/vect-97.c	(revision 5847)
> +++ gcc.dg/vect/vect-97.c	(working copy)
> @@ -5,8 +5,8 @@
> 
>  #define N 16
>   
> -char x[N] __attribute__ ((__aligned__(16)));
> -char cb[N] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
> +char x[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +char cb[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
> 
>  __attribute__ ((noinline))
>  int main1 ()
> Index: gcc.dg/vect/vect-outer-1a.c
> ===================================================================
> --- gcc.dg/vect/vect-outer-1a.c	(revision 5847)
> +++ gcc.dg/vect/vect-outer-1a.c	(working copy)
> @@ -1,8 +1,8 @@
>  /* { dg-do compile } */
> 
>  #define N 64
> -signed short image[N][N] __attribute__ ((__aligned__(16)));
> -signed short block[N][N] __attribute__ ((__aligned__(16)));
> +signed short image[N][N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +signed short block[N][N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  /* Can't do outer-loop vectorization because of non-consecutive access.
>     Currently fails to vectorize because the reduction pattern is not
> Index: gcc.dg/vect/vect-multitypes-12.c
> ===================================================================
> --- gcc.dg/vect/vect-multitypes-12.c	(revision 5847)
> +++ gcc.dg/vect/vect-multitypes-12.c	(working copy)
> @@ -5,7 +5,7 @@
> 
>  #define N 64
> 
> -char x[N] __attribute__ ((__aligned__(16)));
> +char x[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  __attribute__ ((noinline)) int
>  foo (int len, int *z) {
> Index: gcc.dg/vect/vect-reduc-dot-s8c.c
> ===================================================================
> --- gcc.dg/vect/vect-reduc-dot-s8c.c	(revision 5847)
> +++ gcc.dg/vect/vect-reduc-dot-s8c.c	(working copy)
> @@ -7,8 +7,8 @@
> 
>  #define DOT3 43680
> 
> -signed char X[N] __attribute__ ((__aligned__(16)));
> -signed char Y[N] __attribute__ ((__aligned__(16)));
> +signed char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +signed char Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  /* char->int->int dot product. 
>     Not detected as a dot-product pattern.  */
> Index: gcc.dg/vect/vect-56.c
> ===================================================================
> --- gcc.dg/vect/vect-56.c	(revision 5847)
> +++ gcc.dg/vect/vect-56.c	(working copy)
> @@ -30,14 +30,14 @@ void bar (float *pa, float *pb, float *p
>     vect-57.c is similar to this one with two differences:
>          aliasing is a problem, and the write access has unknown alignment.  */
> 
> -float b[N] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> -float c[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> +float b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> +float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> 
>  __attribute__ ((noinline)) int
>  main1 ()
>  {
>    int i;
> -  float a[N] __attribute__ ((__aligned__(16)));
> +  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>    float *pa = a;
>    float *pb = b;
>    float *pc = c;
> Index: gcc.dg/vect/vect-78-global.c
> ===================================================================
> --- gcc.dg/vect/vect-78-global.c	(revision 5847)
> +++ gcc.dg/vect/vect-78-global.c	(working copy)
> @@ -11,7 +11,7 @@
>     more involved than just an ssa_name.  */
> 
>  int ia[N];
> -int ib[N+OFF] __attribute__ ((__aligned__(16))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
> +int ib[N+OFF] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
>  int off = 8;
> 
>  __attribute__ ((noinline))
> Index: gcc.dg/vect/vect-outer-2.c
> ===================================================================
> --- gcc.dg/vect/vect-outer-2.c	(revision 5847)
> +++ gcc.dg/vect/vect-outer-2.c	(working copy)
> @@ -4,7 +4,7 @@
>  #include "tree-vect.h"
> 
>  #define N 40
> -float image[N][N] __attribute__ ((__aligned__(16)));
> +float image[N][N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  float out[N];
> 
>  /* Outer-loop vectorization.  */
> Index: gcc.dg/vect/no-vfa-vect-43.c
> ===================================================================
> --- gcc.dg/vect/no-vfa-vect-43.c	(revision 5847)
> +++ gcc.dg/vect/no-vfa-vect-43.c	(working copy)
> @@ -25,8 +25,8 @@ __attribute__ ((noinline)) int
>  main1 (float *pa)
>  {
>    int i;
> -  float pb[N] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> -  float pc[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> +  float pb[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> +  float pc[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> 
>    /* Vectorizable: pa may not alias pb and/or pc, even though their
>       addresses escape.  &pa would need to escape to point to escaped memory.  */
> @@ -66,7 +66,7 @@ main2 (float * pa)
>  int main (void)
>  {
>    int i;
> -  float a[N] __attribute__ ((__aligned__(16)));
> +  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>    check_vect ();
> 
> Index: gcc.dg/vect/vect-widen-mult-s8.c
> ===================================================================
> --- gcc.dg/vect/vect-widen-mult-s8.c	(revision 5847)
> +++ gcc.dg/vect/vect-widen-mult-s8.c	(working copy)
> @@ -5,8 +5,8 @@
> 
>  #define N 64
> 
> -signed char X[N] __attribute__ ((__aligned__(16)));
> -signed char Y[N] __attribute__ ((__aligned__(16)));
> +signed char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +signed char Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  short result[N];
> 
>  /* char->short widening-mult */
> Index: gcc.dg/vect/vect-multitypes-3.c
> ===================================================================
> --- gcc.dg/vect/vect-multitypes-3.c	(revision 5847)
> +++ gcc.dg/vect/vect-multitypes-3.c	(working copy)
> @@ -5,11 +5,11 @@
> 
>  #define N 32
> 
> -int ib[N] __attribute__ ((__aligned__(16))) = 
> +int ib[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = 
>  	{0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
> -short sb[N] __attribute__ ((__aligned__(16))) = 
> +short sb[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = 
>  	{0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
> -char cb[N] __attribute__ ((__aligned__(16))) = 
> +char cb[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = 
>  	{0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
> 
>  __attribute__ ((noinline)) 
> Index: gcc.dg/vect/vect-40.c
> ===================================================================
> --- gcc.dg/vect/vect-40.c	(revision 5847)
> +++ gcc.dg/vect/vect-40.c	(working copy)
> @@ -30,9 +30,9 @@ __attribute__ ((noinline)) int
>  main1 ()
>  {
>    int i;
> -  float a[N] __attribute__ ((__aligned__(16)));
> -  float b[N] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> -  float c[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> +  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +  float b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
> +  float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
>    float *pa = a;
>    float *pb = b;
>    float *pc = c;
> Index: gcc.dg/vect/vect-48.c
> ===================================================================
> --- gcc.dg/vect/vect-48.c	(revision 5847)
> +++ gcc.dg/vect/vect-48.c	(working copy)
> @@ -18,7 +18,7 @@
>  __attribute__ ((noinline)) int
>  main1 (float *pb, float *pc)
>  {
> -  float pa[N] __attribute__ ((__aligned__(16)));
> +  float pa[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>    int i;
> 
>    for (i = 0; i < N; i++)
> @@ -39,8 +39,8 @@ main1 (float *pb, float *pc)
>  int main (void)
>  {
>    int i;
> -  float b[N+1] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60};
> -  float c[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> +  float b[N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60};
> +  float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
> 
>    check_vect ();
> 
> Index: gcc.dg/vect/vect-reduc-dot-s16a.c
> ===================================================================
> --- gcc.dg/vect/vect-reduc-dot-s16a.c	(revision 5847)
> +++ gcc.dg/vect/vect-reduc-dot-s16a.c	(working copy)
> @@ -6,8 +6,8 @@
>  #define N 64
>  #define DOT 43680
> 
> -signed short X[N] __attribute__ ((__aligned__(16)));
> -signed short Y[N] __attribute__ ((__aligned__(16)));
> +signed short X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +signed short Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  /* short->int->int dot product.
>     Detected as a dot-product pattern.
> Index: gcc.dg/vect/vect-multitypes-13.c
> ===================================================================
> --- gcc.dg/vect/vect-multitypes-13.c	(revision 5847)
> +++ gcc.dg/vect/vect-multitypes-13.c	(working copy)
> @@ -5,9 +5,9 @@
> 
>  #define N 64
> 
> -unsigned char uX[N] __attribute__ ((__aligned__(16)));
> +unsigned char uX[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  unsigned int uresult[N];
> -signed char X[N] __attribute__ ((__aligned__(16)));
> +signed char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  int result[N];
> 
>  /* Unsigned type promotion (qi->si) */
> Index: gcc.dg/vect/vect-74.c
> ===================================================================
> --- gcc.dg/vect/vect-74.c	(revision 5847)
> +++ gcc.dg/vect/vect-74.c	(working copy)
> @@ -9,9 +9,9 @@
>     the expression that represents the first location accessed - is
>     more involved than just an ssa_name.  */
> 
> -float a[N] __attribute__ ((__aligned__(16)));
> -float b[N+4] __attribute__ ((__aligned__(16))) = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 7.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0}; 
> -float c[N] __attribute__ ((__aligned__(16))) = {0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 7.5, 9.5, 10.5, 11.5, 12.5, 13.5, 14.5, 15.5};
> +float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +float b[N+4] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 7.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0}; 
> +float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 7.5, 9.5, 10.5, 11.5, 12.5, 13.5, 14.5, 15.5};
> 
>  __attribute__ ((noinline)) int
>  main1 (float *__restrict__  pa, float * __restrict__ pb, float * __restrict__ pc)
> Index: gcc.dg/vect/vect-outer-2a.c
> ===================================================================
> --- gcc.dg/vect/vect-outer-2a.c	(revision 5847)
> +++ gcc.dg/vect/vect-outer-2a.c	(working copy)
> @@ -4,7 +4,7 @@
>  #include "tree-vect.h"
> 
>  #define N 40
> -float image[N][N][N] __attribute__ ((__aligned__(16)));
> +float image[N][N][N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>  __attribute__ ((noinline)) void
>  foo (){
> Index: gcc.dg/vect/vect-outer-3.c
> ===================================================================
> --- gcc.dg/vect/vect-outer-3.c	(revision 5847)
> +++ gcc.dg/vect/vect-outer-3.c	(working copy)
> @@ -3,7 +3,7 @@
>  #include "tree-vect.h"
> 
>  #define N 40
> -float image[N][N] __attribute__ ((__aligned__(16)));
> +float image[N][N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  float out[N];
> 
>  /* Outer-loop vectoriation.  */
> Index: gcc.dg/vect/vect-complex-4.c
> ===================================================================
> --- gcc.dg/vect/vect-complex-4.c	(revision 5847)
> +++ gcc.dg/vect/vect-complex-4.c	(working copy)
> @@ -11,7 +11,7 @@ struct foostr {
>    _Complex short f2;
>  };
> 
> -struct foostr a[16] __attribute__ ((__aligned__(16))) =
> +struct foostr a[16] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) =
>    {
>      11 + 23i, 24 + 22i,
>      11 + 26i, 24 + 35i,
> @@ -31,7 +31,7 @@ struct foostr a[16] __attribute__ ((__al
>      35 + 36i, 34 + 28i,
>    };
> 
> -struct foostr b[16] __attribute__ ((__aligned__(16))) =
> +struct foostr b[16] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) =
>    {
>      37 + 12i, 23 + 15i,
>      14 + 11i, 13 + 25i,
> @@ -50,7 +50,7 @@ struct foostr b[16] __attribute__ ((__al
>      25 + 27i, 15 + 30i,
>      10 + 31i, 37 + 37i,
>    };
> -struct foostr c[16] __attribute__ ((__aligned__(16)));
> +struct foostr c[16] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>  struct foostr res[N] =
>    {
>      48 + 35i, 47 + 37i,
> Index: gcc.dg/vect/no-vfa-vect-61.c
> ===================================================================
> --- gcc.dg/vect/no-vfa-vect-61.c	(revision 5847)
> +++ gcc.dg/vect/no-vfa-vect-61.c	(working copy)
> @@ -44,8 +44,8 @@ __attribute__ ((noinline)) int
>  main1 (int n , float *pa)
>  {
>    int i;
> -  float b[N] __attribute__ ((__aligned__(16)));
> -  float c[N] __attribute__ ((__aligned__(16)));
> +  float b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> +  float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
>    float *pb = b;
>    float *pc = c;
> 
> @@ -65,7 +65,7 @@ int main (void)
>  {
>    int i;
>    int n=N;
> -  float a[N] __attribute__ ((__aligned__(16)));
> +  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
> 
>    check_vect ();
>    main1 (n,a);
> Index: gcc.dg/vect/slp-widen-mult-s16.c
> ===================================================================
> --- gcc.dg/vect/slp-widen-mult-s16.c	(revision 5847)
> +++ gcc.dg/vect/slp-widen-mult-s16.c	(working copy)
> @@ -5,8 +5,8 @@
> 
>  #define N 64
> 
> -short X[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> -short Y[N] __attribute__ ((__aligned__(16))) = {64,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1};
> +short X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
> +short Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {64,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1};
> 
>  int result[N];
> 


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