From: Jakub Jelinek <jakub@redhat.com>
Date: Tue, 26 Nov 2013 20:55:39 +0000 (+0100)
Subject: re PR middle-end/59273 (ICE in expand_expr_real_2, at expr.c:9188 on alpha)
X-Git-Tag: releases/gcc-4.9.0~2437
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1f2541577e34768653efaaf876b1ff744b06aa07;p=thirdparty%2Fgcc.git

re PR middle-end/59273 (ICE in expand_expr_real_2, at expr.c:9188 on alpha)

	PR middle-end/59273
	* tree-vect-generic.c (optimize_vector_constructor): Don't optimize
	if there isn't optab handler for the corresponding vector PLUS_EXPR.

From-SVN: r205414
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c2d977efdf25..4f2edd445c00 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,9 @@
 2013-11-26  Jakub Jelinek  <jakub@redhat.com>
 
+	PR middle-end/59273
+	* tree-vect-generic.c (optimize_vector_constructor): Don't optimize
+	if there isn't optab handler for the corresponding vector PLUS_EXPR.
+
 	PR rtl-optimization/59166
 	* ira.c (find_moveable_pseudos): Use DF_REF_REAL_LOC instead of
 	DF_REF_LOC in validate_change call.
diff --git a/gcc/tree-vect-generic.c b/gcc/tree-vect-generic.c
index 87130bd5a9f7..d55485dbeaa0 100644
--- a/gcc/tree-vect-generic.c
+++ b/gcc/tree-vect-generic.c
@@ -1015,9 +1015,14 @@ optimize_vector_constructor (gimple_stmt_iterator *gsi)
   tree *cst;
   gimple g;
   tree base = NULL_TREE;
+  optab op;
 
   if (nelts <= 2 || CONSTRUCTOR_NELTS (rhs) != nelts)
     return;
+  op = optab_for_tree_code (PLUS_EXPR, type, optab_default);
+  if (op == unknown_optab
+      || optab_handler (op, TYPE_MODE (type)) == CODE_FOR_nothing)
+    return;
   FOR_EACH_VEC_SAFE_ELT (CONSTRUCTOR_ELTS (rhs), i, elt)
     if (TREE_CODE (elt->value) != SSA_NAME
 	|| TREE_CODE (TREE_TYPE (elt->value)) == VECTOR_TYPE)