re PR middle-end/71734 (FAIL: libgomp.fortran/simd4.f90 -O3 -g execution test)

gcc/

2016-07-18  Yuri Rumyantsev  <ysrumyan@gmail.com>

	PR tree-optimization/71734
	* tree-ssa-loop-im.c (ref_indep_loop_p_1): Add REF_LOOP argument which
	contains REF, use it to check safelen, assume that safelen value
	must be greater 1, fix style.
	(ref_indep_loop_p_2): Add REF_LOOP argument.
	(ref_indep_loop_p): Pass LOOP as additional argument to
	ref_indep_loop_p_2.

gcc/testsuite/

2016-07-18  Yuri Rumyantsev  <ysrumyan@gmail.com>

	PR tree-optimization/71734
	* g++.dg/vect/pr70729.cc: Delete redundant dg options, fix style.

From-SVN: r238435

gcc/ChangeLog

+2016-07-18  Yuri Rumyantsev  <ysrumyan@gmail.com>
+
+	PR tree-optimization/71734
+	* tree-ssa-loop-im.c (ref_indep_loop_p_1): Add REF_LOOP argument which
+	contains REF, use it to check safelen, assume that safelen value
+	must be greater 1, fix style.
+	(ref_indep_loop_p_2): Add REF_LOOP argument.
+	(ref_indep_loop_p): Pass LOOP as additional argument to
+	ref_indep_loop_p_2.
+
 2016-07-18  Dominik Vogt  <vogt@linux.vnet.ibm.com>
 
 	* cfgexpand.c (expand_stack_vars): Implement synamic stack space

gcc/testsuite/ChangeLog

+2016-07-18  Yuri Rumyantsev  <ysrumyan@gmail.com>
+
+	PR tree-optimization/71734
+	* g++.dg/vect/pr70729.cc: Delete redundant dg options, fix style.
+
 2016-07-18  Dominik Vogt  <vogt@linux.vnet.ibm.com>
 
 	* gcc.target/s390/warn-dynamicstack-1.c: New test.

gcc/testsuite/g++.dg/vect/pr70729.cc

 // { dg-do compile }
-// { dg-require-effective-target vect_simd_clones }
-// { dg-additional-options "-Ofast" }
-// { dg-additional-options "-mavx2 -fopenmp-simd" { target x86_64-*-* i?86-*-* } }
+// { dg-additional-options "-ffast-math -fopenmp-simd" }
+// { dg-additional-options "-msse2" { target x86_64-*-* i?86-*-* } }
 
 
 #include <string.h>
 #include <xmmintrin.h>
 
-inline void* my_alloc(size_t bytes) {return _mm_malloc(bytes, 128);}
-inline void my_free(void* memory) {_mm_free(memory);}
+inline void* my_alloc (size_t bytes) {return _mm_malloc (bytes, 128);}
+inline void my_free (void* memory) {_mm_free (memory);}
 
 template <typename T>
 class Vec
@@ -18,13 +17,13 @@ class Vec
 
 public:
 
-  Vec (int n) : isize(n) {data = (T*)my_alloc(isize*sizeof(T));}
+  Vec (int n) : isize (n) {data = (T*)my_alloc (isize*sizeof (T));}
   ~Vec () {my_free(data);}
 
   Vec& operator = (const Vec& other)	
     {
       if (this != &other)
-	memcpy(data, other.data, isize*sizeof(T));
+	memcpy (data, other.data, isize*sizeof (T));
       return *this;
     }
 
@@ -67,7 +66,7 @@ struct Ss
 void Ss::foo (float *in, float w)
 {
 #pragma omp simd
-  for (int i=0; i<S_n; i++)
+  for (int i = 0; i < S_n; i++)
     {
       float w1 = C2[S_n + i] * w;
       v1.v_i[i] += (int)w1;
@@ -75,4 +74,4 @@ void Ss::foo (float *in, float w)
     }
 }
  
-// { dg-final { scan-tree-dump "LOOP VECTORIZED" "vect" } }
+// { dg-final { scan-tree-dump "LOOP VECTORIZED" "vect" { target x86_64-*-* i?86-*-* } } }

gcc/tree-ssa-loop-im.c

@@ -2109,11 +2109,12 @@ record_dep_loop (struct loop *loop, im_mem_ref *ref, bool stored_p)
     loop = loop_outer (loop);
 }
 
-/* Returns true if REF is independent on all other memory references in
-   LOOP.  */
+/* Returns true if REF in REF_LOOP is independent on all other memory
+   references in LOOP.  */
 
 static bool
-ref_indep_loop_p_1 (struct loop *loop, im_mem_ref *ref, bool stored_p)
+ref_indep_loop_p_1 (struct loop *ref_loop, struct loop *loop,
+		    im_mem_ref *ref, bool stored_p)
 {
   bitmap refs_to_check;
   unsigned i;
@@ -2128,13 +2129,14 @@ ref_indep_loop_p_1 (struct loop *loop, im_mem_ref *ref, bool stored_p)
   if (bitmap_bit_p (refs_to_check, UNANALYZABLE_MEM_ID))
     return false;
 
-  if (loop->safelen > 0)
+  if (ref_loop->safelen > 1)
     {
       if (dump_file && (dump_flags & TDF_DETAILS))
 	{
-	  fprintf(dump_file,"Consider REF independent in loop#%d\n", loop->num);
-	  print_generic_expr(dump_file, ref->mem.ref, TDF_SLIM);
-	  fprintf(dump_file, "\n");
+	  fprintf (dump_file,"REF is independent in ref_loop#%d\n",
+		   ref_loop->num);
+	  print_generic_expr (dump_file, ref->mem.ref, TDF_SLIM);
+	  fprintf (dump_file, "\n");
 	}
       return true;
     }
@@ -2149,11 +2151,13 @@ ref_indep_loop_p_1 (struct loop *loop, im_mem_ref *ref, bool stored_p)
   return true;
 }
 
-/* Returns true if REF is independent on all other memory references in
-   LOOP.  Wrapper over ref_indep_loop_p_1, caching its results.  */
+/* Returns true if REF in REF_LOOP is independent on all other memory
+   references in LOOP.  Wrapper over ref_indep_loop_p_1, caching its
+   results.  */
 
 static bool
-ref_indep_loop_p_2 (struct loop *loop, im_mem_ref *ref, bool stored_p)
+ref_indep_loop_p_2 (struct loop *ref_loop, struct loop *loop,
+		    im_mem_ref *ref, bool stored_p)
 {
   stored_p |= (ref->stored && bitmap_bit_p (ref->stored, loop->num));
 
@@ -2165,12 +2169,12 @@ ref_indep_loop_p_2 (struct loop *loop, im_mem_ref *ref, bool stored_p)
   struct loop *inner = loop->inner;
   while (inner)
     {
-      if (!ref_indep_loop_p_2 (inner, ref, stored_p))
+      if (!ref_indep_loop_p_2 (ref_loop, inner, ref, stored_p))
 	return false;
       inner = inner->next;
     }
 
-  bool indep_p = ref_indep_loop_p_1 (loop, ref, stored_p);
+  bool indep_p = ref_indep_loop_p_1 (ref_loop, loop, ref, stored_p);
 
   if (dump_file && (dump_flags & TDF_DETAILS))
     fprintf (dump_file, "Querying dependencies of ref %u in loop %d: %s\n",
@@ -2209,7 +2213,7 @@ ref_indep_loop_p (struct loop *loop, im_mem_ref *ref)
 {
   gcc_checking_assert (MEM_ANALYZABLE (ref));
 
-  return ref_indep_loop_p_2 (loop, ref, false);
+  return ref_indep_loop_p_2 (loop, loop, ref, false);
 }
 
 /* Returns true if we can perform store motion of REF from LOOP.  */