Patch NaCl gcc to avoid use of fsincos.

gcc/config/i386/i386.md

Index: gcc/config/i386/i386.md
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 6429360bb9de1ac243ec95f6da95411d58219418..783d13d337163035b8ea198c795d62fc848b4793 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -17500,7 +17500,19 @@
         (unspec:XF [(match_dup 2)] UNSPEC_SINCOS_SIN))]
   "TARGET_USE_FANCY_MATH_387
    && flag_unsafe_math_optimizations"
-  "fsincos"
+{
+ if (TARGET_NACL)
+  {
+    return "fld %%st(0)"
+	   "\n\tfsin"
+	   "\n\tfxch"
+	   "\n\tfcos";
+  }
+ else
+  {
+    return "fsincos";
+  }
+}
   [(set_attr "type" "fpspc")
    (set_attr "mode" "XF")])
 
@@ -17538,6 +17550,19 @@
        || TARGET_MIX_SSE_I387)
    && flag_unsafe_math_optimizations"
   "fsincos"
+{
+ if (TARGET_NACL)
+  {
+    return "fld %%st(0)"
+	   "\n\tfsin"
+	   "\n\tfxch"
+	   "\n\tfcos";
+  }
+ else
+  {
+    return "fsincos";
+  }
+}
   [(set_attr "type" "fpspc")
    (set_attr "mode" "XF")])