@@ -1,3 +1,9 @@
+2014-12-02 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR target/64108
+ * config/i386/i386.c (decide_alg): Stop only if there aren't
+ any usable algorithms.
+
2014-12-02 Tom de Vries <tom@codesourcery.com>
PR rtl-optimization/63718
@@ -24464,7 +24464,8 @@ decide_alg (HOST_WIDE_INT count, HOST_WIDE_INT
expected_size,
*noalign = alg_noalign;
return alg;
}
- break;
+ else if (!any_alg_usable_p)
+ break;
}
else if (alg_usable_p (candidate, memset))
{
@@ -1,3 +1,8 @@
+2014-12-02 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR target/64108
+ * gcc.target/i386/memset-strategy-2.c: New test.
+
2014-12-02 Richard Biener <rguenther@suse.de>
* gcc.dg/torture/20141202-1.c: New testcase.
b/gcc/testsuite/gcc.target/i386/memset-strategy-2.c
new file mode 100644
@@ -0,0 +1,10 @@
+/* PR target/64108 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -march=atom -mmemset-strategy=libcall:-1:align
-minline-all-stringops" } */
+
+char a[2048];
+void t (void)
+{
+ __builtin_memset (a, 1, 2048);
+}
+