re PR tree-optimization/92162 (ICE in vect_create_epilog_for_reduction, at tree-vect-loop.c:4252)

2019-10-21  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/92162
	* tree-vect-loop.c (vect_create_epilog_for_reduction): Lookup
	STMT_VINFO_REDUC_IDX in reduc_info.
	* tree-vect-stmts.c (vectorizable_condition): Likewise.

	* gcc.dg/pr92162.c: New testcase.

From-SVN: r277261

gcc/ChangeLog

 2019-10-21  Richard Biener  <rguenther@suse.de>
 
+	PR tree-optimization/92162
+	* tree-vect-loop.c (vect_create_epilog_for_reduction): Lookup
+	STMT_VINFO_REDUC_IDX in reduc_info.
+	* tree-vect-stmts.c (vectorizable_condition): Likewise.
+
+2019-10-21  Richard Biener  <rguenther@suse.de>
+
 	* tree-vectorizer.h (_slp_tree::ops): New member.
 	(SLP_TREE_SCALAR_OPS): New.
 	(vect_get_slp_defs): Adjust prototype.

gcc/testsuite/ChangeLog

 2019-10-21  Richard Biener  <rguenther@suse.de>
 
+	PR tree-optimization/92162
+	* gcc.dg/pr92162.c: New testcase.
+
+2019-10-21  Richard Biener  <rguenther@suse.de>
+
 	PR tree-optimization/92161
 	* gfortran.dg/pr92161.f: New testcase.
 

gcc/testsuite/gcc.dg/pr92162.c

+/* { dg-do compile } */
+/* { dg-options "-Ofast" } */
+
+short int s8;
+
+void __attribute__ ((simd))
+gn (void)
+{
+  s8 = 0;
+}

gcc/tree-vect-loop.c

@@ -4259,9 +4259,9 @@ vect_create_epilog_for_reduction (stmt_vec_info stmt_info,
 	 (CCOMPARE).  The then and else values mirror the main VEC_COND_EXPR:
 	 the reduction phi corresponds to NEW_PHI_TREE and the new values
 	 correspond to INDEX_BEFORE_INCR.  */
-      gcc_assert (STMT_VINFO_REDUC_IDX (stmt_info) >= 1);
+      gcc_assert (STMT_VINFO_REDUC_IDX (reduc_info) >= 1);
       tree index_cond_expr;
-      if (STMT_VINFO_REDUC_IDX (stmt_info) == 2)
+      if (STMT_VINFO_REDUC_IDX (reduc_info) == 2)
 	index_cond_expr = build3 (VEC_COND_EXPR, cr_index_vector_type,
 				  ccompare, indx_before_incr, new_phi_tree);
       else

gcc/tree-vect-stmts.c

@@ -9818,7 +9818,7 @@ vectorizable_condition (stmt_vec_info stmt_info, gimple_stmt_iterator *gsi,
 	return false;
       reduc_info = info_for_reduction (stmt_info);
       reduction_type = STMT_VINFO_REDUC_TYPE (reduc_info);
-      reduc_index = STMT_VINFO_REDUC_IDX (stmt_info);
+      reduc_index = STMT_VINFO_REDUC_IDX (reduc_info);
       gcc_assert (reduction_type != EXTRACT_LAST_REDUCTION
 		  || reduc_index != -1);
     }