re PR tree-optimization/79887 (ICE in set_uid_loop_bbs, at tree-vectorizer.c:482)

2017-03-06  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/79894
	* tree-vectorizer.c (vectorize_loops): Set loop_vectorized_call
	to NULL after folding it.

	* gcc.dg/vect/pr79887.c: New testcase.

From-SVN: r245923

gcc/ChangeLog

 2017-03-06  Richard Biener  <rguenther@suse.de>
 
+	PR tree-optimization/79894
+	* tree-vectorizer.c (vectorize_loops): Set loop_vectorized_call
+	to NULL after folding it.
+
+2017-03-06  Richard Biener  <rguenther@suse.de>
+
 	PR tree-optimization/79824
 	* tree-vect-stmts.c (get_group_load_store_type): Fix alignment
 	check disabling peeling for gaps.

gcc/testsuite/ChangeLog

 2017-03-06  Richard Biener  <rguenther@suse.de>
 
+	PR tree-optimization/79894
+	* gcc.dg/vect/pr79887.c: New testcase.
+
+2017-03-06  Richard Biener  <rguenther@suse.de>
+
 	PR tree-optimization/79824
 	* gcc.dg/vect/pr79824-1.c: New testcase.
 	* gcc.dg/vect/pr79824-2.c: Likewise.

gcc/testsuite/gcc.dg/vect/pr79887.c

+/* Test for pr79887.  */
+/* { dg-do compile } */
+/* { dg-require-effective-target vect_condition } */
+/* { dg-additional-options "-fno-trapping-math --param vect-epilogues-nomask=1" } */
+/* { dg-additional-options "-mavx512ifma" { target x86_64-*-* i?86-*-* } } */
+
+void
+foo (float a[32], float b[2][32])
+{
+  int i;
+  for (i = 0; i < 32; i++)
+    a[i] = (b[0][i] > b[1][i]) ? b[0][i] : b[1][i];
+}
+

gcc/tree-vectorizer.c

@@ -651,6 +651,7 @@ vectorize_loops (void)
 				     "basic block vectorized\n");
 		    fold_loop_vectorized_call (loop_vectorized_call,
 					       boolean_true_node);
+		    loop_vectorized_call = NULL;
 		    ret |= TODO_cleanup_cfg;
 		  }
 	      }
@@ -703,6 +704,7 @@ vectorize_loops (void)
 	if (loop_vectorized_call)
 	  {
 	    fold_loop_vectorized_call (loop_vectorized_call, boolean_true_node);
+	    loop_vectorized_call = NULL;
 	    ret |= TODO_cleanup_cfg;
 	  }