pr21829.c: Simplify matching since we now optimize better.

	* gcc.dg/tree-ssa/pr21829.c: Simplify matching since
	we now optimize better.
	* gcc.dg/Wunreachable-8.c: Bogus warnings now come
	out at different places.
	* gcc.dg/vect/vect-92.c: Increase loop iteration count to prevent
	unroling.
	* gcc.dg/vect/vect-76.c: Likewise.
	* gcc.dg/vect/vect-70.c: Likewise.
	* gcc.dg/vect/vect-66.c: Likewise.
	* gcc.dg/vect/no-section-anchors-vect-66.c: Likewise.
	* gcc.dg/vect/slp-3.c: One of loops gets now fully unrolled.
	* tree-ssa-loop-ivcanon.c: Include target.h
	(struct loop_size): new structure.
	(constant_after_peeling): New predicate.
	(tree_estimate_loop_size): New function.
	(estimated_unrolled_size): Rewrite for new estimates.
	(try_unroll_loop_completely): Use new estimates.
	* Makefile.in (tree-ssa-loop-ivcanon.o): Add dependenc on target.h

From-SVN: r147395

6 files changed, 11 insertions, 10 deletions

diff --git a/gcc/testsuite/gcc.dg/vect/no-section-anchors-vect-66.c b/gcc/testsuite/gcc.dg/vect/no-section-anchors-vect-66.c
index d590975..49a9098f 100644
--- a/gcc/testsuite/gcc.dg/vect/no-section-anchors-vect-66.c
+++ b/gcc/testsuite/gcc.dg/vect/no-section-anchors-vect-66.c
@@ -3,7 +3,7 @@
 #include <stdarg.h>
 #include "tree-vect.h"
 
-#define N 8
+#define N 16
 
 int ia[8][5][N+2];
 int ic[16][16][5][N+2];
diff --git a/gcc/testsuite/gcc.dg/vect/slp-3.c b/gcc/testsuite/gcc.dg/vect/slp-3.c
index 0707153..1bb9884 100644
--- a/gcc/testsuite/gcc.dg/vect/slp-3.c
+++ b/gcc/testsuite/gcc.dg/vect/slp-3.c
@@ -142,7 +142,8 @@ int main (void)
   return 0;
 }
 
-/* { dg-final { scan-tree-dump-times "vectorized 3 loops" 1 "vect" { xfail vect_no_align } } } */
-/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 3 "vect" { xfail vect_no_align } } } */
+/* One of the loops gets complettely unrolled.  */
+/* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect" { xfail vect_no_align } } } */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 2 "vect" { xfail vect_no_align } } } */
 /* { dg-final { cleanup-tree-dump "vect" } } */
   
diff --git a/gcc/testsuite/gcc.dg/vect/vect-66.c b/gcc/testsuite/gcc.dg/vect/vect-66.c
index a332fa0..e0b23cd 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-66.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-66.c
@@ -3,7 +3,7 @@
 #include <stdarg.h>
 #include "tree-vect.h"
 
-#define N 8
+#define N 16
 
 __attribute__ ((noinline))
 void main1 ()
diff --git a/gcc/testsuite/gcc.dg/vect/vect-70.c b/gcc/testsuite/gcc.dg/vect/vect-70.c
index df7de31..23b1902 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-70.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-70.c
@@ -3,7 +3,7 @@
 #include <stdarg.h>
 #include "tree-vect.h"
 
-#define N 12
+#define N 24
 
 struct s{
   int m;
diff --git a/gcc/testsuite/gcc.dg/vect/vect-76.c b/gcc/testsuite/gcc.dg/vect/vect-76.c
index 847b5e5..7097e7a 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-76.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-76.c
@@ -3,7 +3,7 @@
 #include <stdarg.h>
 #include "tree-vect.h"
 
-#define N 12
+#define N 24
 #define OFF 4
 
 /* Check handling of accesses for which the "initial condition" -
diff --git a/gcc/testsuite/gcc.dg/vect/vect-92.c b/gcc/testsuite/gcc.dg/vect/vect-92.c
index 01c751f..3a64e25 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-92.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-92.c
@@ -22,13 +22,13 @@ main1 ()
 {
   int i;
 
-  for (i = 0; i < 5; i++)
+  for (i = 0; i < 10; i++)
     {
       pa[i+1] = pb[i+1] * pc[i+1];
     }
 
   /* check results:  */
-  for (i = 0; i < 5; i++)
+  for (i = 0; i < 10; i++)
     {
       if (pa[i+1] != (pb[i+1] * pc[i+1]))
 	abort ();
@@ -42,13 +42,13 @@ main2 ()
 {
   int i;
 
-  for (i = 0; i < 6; i++)
+  for (i = 0; i < 12; i++)
     {
       pa[i+1] = pb[i+1] * pc[i+1];
     }
 
   /* check results:  */
-  for (i = 0; i < 6; i++)
+  for (i = 0; i < 12; i++)
     {
       if (pa[i+1] != (pb[i+1] * pc[i+1]))
 	abort ();