[PATCH] Fix pr81706 tests on darwin

[Dominique d'Humières]

The following patch fixes pr81706 tests on darwin

--- ../_clean/gcc/testsuite/gcc.target/i386/pr81706.c   2017-10-26 
07:16:18.000000000 +0200
+++ gcc/testsuite/gcc.target/i386/pr81706.c     2017-11-11 16:02:36.000000000 
+0100
@@ -1,8 +1,8 @@
 /* PR libstdc++/81706 */
 /* { dg-do compile } */
 /* { dg-options "-O3 -mavx2 -mno-avx512f" } */
-/* { dg-final { scan-assembler "call\[^\n\r]_ZGVdN4v_cos" } } */
-/* { dg-final { scan-assembler "call\[^\n\r]_ZGVdN4v_sin" } } */
+/* { dg-final { scan-assembler "call\[^\n\r]__?ZGVdN4v_cos" } } */
+/* { dg-final { scan-assembler "call\[^\n\r]__?ZGVdN4v_sin" } } */
 
 #ifdef __cplusplus
 extern "C" {
--- ../_clean/gcc/testsuite/g++.dg/ext/pr81706.C        2017-10-26 
07:16:21.000000000 +0200
+++ gcc/testsuite/g++.dg/ext/pr81706.C  2017-11-09 21:41:36.000000000 +0100
@@ -1,8 +1,8 @@
 // PR libstdc++/81706
 // { dg-do compile { target i?86-*-* x86_64-*-* } }
 // { dg-options "-O3 -mavx2 -mno-avx512f" }
-// { dg-final { scan-assembler "call\[^\n\r]_ZGVdN4v_cos" } }
-// { dg-final { scan-assembler "call\[^\n\r]_ZGVdN4v_sin" } }
+// { dg-final { scan-assembler "call\[^\n\r]__?ZGVdN4v_cos" } }
+// { dg-final { scan-assembler "call\[^\n\r]__?ZGVdN4v_sin" } }
 
 #ifdef __cplusplus
 extern "C {

Is it OK?

TIA

Dominique