testsuite/97494 - adjust gcc.dg/vect/slp-11b.c

Support for loop SLP splitting exposed that slp-11b.c has
folding that breaks SLP discovery which isn't what was intended
when the testcase was written.  The following makes it SLP-able
and "only" run into the issue that a load permutation is required.

And tries to adjust the target selectors accordingly.

2021-01-18  Richard Biener  <rguenther@suse.de>

	PR testsuite/97494
	* gcc.dg/vect/slp-11b.c: Adjust.

diff --git a/gcc/testsuite/gcc.dg/vect/slp-11b.c b/gcc/testsuite/gcc.dg/vect/slp-11b.c
index 0aece8092a83ebd5fbdcd8257537a6bb3838a2c2..c4d9ab0f36bc224e5dcd23bafff30533735a12d0 100644 (file)
--- a/gcc/testsuite/gcc.dg/vect/slp-11b.c
+++ b/gcc/testsuite/gcc.dg/vect/slp-11b.c
@@ -12,13 +12,13 @@ main1 ()
   unsigned int out[N*8], a0, a1, a2, a3, a4, a5, a6, a7, b1, b0, b2, b3, b4, b5, b6, b7;
   unsigned int in[N*8] = {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};
 
-  /* Requires permutation - not SLPable.  */
+  /* Requires permutation for SLP.  */
   for (i = 0; i < N*2; i++)
     {
       out[i*4] = (in[i*4] + 2) * 3;
       out[i*4 + 1] = (in[i*4 + 2] + 2) * 7;
       out[i*4 + 2] = (in[i*4 + 1] + 7) * 3;
-      out[i*4 + 3] = (in[i*4 + 3] + 3) * 4;
+      out[i*4 + 3] = (in[i*4 + 3] + 3) * 7;
     }
 
   /* check results:  */
@@ -27,7 +27,7 @@ main1 ()
       if (out[i*4] !=  (in[i*4] + 2) * 3
          || out[i*4 + 1] != (in[i*4 + 2] + 2) * 7
          || out[i*4 + 2] != (in[i*4 + 1] + 7) * 3
-         || out[i*4 + 3] != (in[i*4 + 3] + 3) * 4)
+         || out[i*4 + 3] != (in[i*4 + 3] + 3) * 7)
         abort ();
     }
 
@@ -43,7 +43,5 @@ int main (void)
   return 0;
 }
 
-/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_strided4 && vect_int_mult } } } } */
-/* { dg-final { scan-tree-dump-times "vectorized 0 loops" 1 "vect" { target { ! { vect_strided4 && vect_int_mult } } } } } */
-/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 0 "vect" { target { ! vect_load_lanes } } } } */
-/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { target { vect_load_lanes } } } } */
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { { vect_strided4 || vect_perm } && vect_int_mult } } } } */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { target { vect_perm && vect_int_mult } } } } */