re PR tree-optimization/57741 (ICE in tree.c:build_int_cst_wide starting in revision 200394)

	PR tree-optimization/57741
	* tree-vect-loop.c (vect_is_simple_iv_evolution): Disallow
	non-INTEGRAL_TYPE_P non-SCALAR_FLOAT_TYPE_P SSA_NAME step_exprs,
	or SCALAR_FLOAT_TYPE_P SSA_NAMEs if !flag_associative_math.
	Allow REAL_CST step_exprs if flag_associative_math.
	(get_initial_def_for_induction): Handle SCALAR_FLOAT_TYPE_P step_expr.

	* gcc.dg/vect/pr57741-1.c: New test.
	* gcc.dg/vect/pr57741-2.c: New test.
	* gcc.dg/vect/pr57741-3.c: New test.

From-SVN: r200600

4 files changed, 114 insertions, 0 deletions

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 0c0cae3..abc5732 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2013-07-02  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/57741
+	* gcc.dg/vect/pr57741-1.c: New test.
+	* gcc.dg/vect/pr57741-2.c: New test.
+	* gcc.dg/vect/pr57741-3.c: New test.
+
 2013-07-02  Ian Bolton  <ian.bolton@arm.com>
 
 	* gcc.target/config/aarch64/insv_1.c: Update to show it doesn't work
diff --git a/gcc/testsuite/gcc.dg/vect/pr57741-1.c b/gcc/testsuite/gcc.dg/vect/pr57741-1.c
new file mode 100644
index 0000000..780f870
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/pr57741-1.c
@@ -0,0 +1,21 @@
+/* PR tree-optimization/57741 */
+/* { dg-do compile } */
+
+void
+foo (float *p, float *q, float x)
+{
+  int i;
+  float f = 1.0f, g = 2.0f;
+  for (i = 0; i < 1024; i++)
+    {
+      *p++ = f;
+      f += x;
+    }
+  for (i = 0; i < 1024; i++)
+    {
+      *q++ = g;
+      g += 0.5f;
+    }
+}
+
+/* { dg-final { cleanup-tree-dump "vect" } } */
diff --git a/gcc/testsuite/gcc.dg/vect/pr57741-2.c b/gcc/testsuite/gcc.dg/vect/pr57741-2.c
new file mode 100644
index 0000000..b3b5f70
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/pr57741-2.c
@@ -0,0 +1,44 @@
+/* PR tree-optimization/57741 */
+/* { dg-do run } */
+/* { dg-additional-options "-ffast-math" } */
+
+#include "tree-vect.h"
+
+extern void abort (void);
+
+__attribute__((noinline, noclone)) void
+foo (float *p, float *q, float x)
+{
+  int i;
+  p = (float *) __builtin_assume_aligned (p, 32);
+  q = (float *) __builtin_assume_aligned (q, 32);
+  float f = 1.0f, g = 2.0f;
+  for (i = 0; i < 1024; i++)
+    {
+      *p++ = f;
+      f += x;
+    }
+  for (i = 0; i < 1024; i++)
+    {
+      *q++ = g;
+      g += 0.5f;
+    }
+}
+
+float p[1024] __attribute__((aligned (32))) = { 17.0f };
+float q[1024] __attribute__((aligned (32))) = { 17.0f };
+
+int
+main ()
+{
+  int i;
+  check_vect ();
+  foo (p, q, 1.5f);
+  for (i = 0; i < 1024; i++)
+    if (p[i] != 1.0f + i * 1.5f || q[i] != 2.0f + i * 0.5f)
+      abort ();
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 2 loop" 1 "vect" } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */
diff --git a/gcc/testsuite/gcc.dg/vect/pr57741-3.c b/gcc/testsuite/gcc.dg/vect/pr57741-3.c
new file mode 100644
index 0000000..8c1a4f4
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/pr57741-3.c
@@ -0,0 +1,42 @@
+/* PR tree-optimization/57741 */
+/* { dg-do run } */
+/* { dg-additional-options "-ffast-math" } */
+
+#include "tree-vect.h"
+
+extern void abort (void);
+
+float p[1024] __attribute__((aligned (32))) = { 17.0f };
+float q[1024] __attribute__((aligned (32))) = { 17.0f };
+char r[1024] __attribute__((aligned (32))) = { 1 };
+
+__attribute__((noinline, noclone)) void
+foo (float x)
+{
+  int i;
+  float f = 1.0f, g = 2.0f;
+  for (i = 0; i < 1024; i++)
+    {
+      p[i] = f;
+      f += x;
+      q[i] = g;
+      g += 0.5f;
+      r[i]++;
+    }
+}
+
+int
+main ()
+{
+  int i;
+  check_vect ();
+  r[0] = 0;
+  foo (1.5f);
+  for (i = 0; i < 1024; i++)
+    if (p[i] != 1.0f + i * 1.5f || q[i] != 2.0f + i * 0.5f || r[i] != 1)
+      abort ();
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 1 loop" 1 "vect" } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */