* vm_exec.c (cfp): Fixes a SEGV issue in r44554.

r11 can be broken by subroutine and sometimes causes SEGV at
  runtime.  Use r13 instead.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44590 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Tue Jan 14 11:28:44 2014  Yuki Yugui Sonoda  <yugui@google.com>
+
+	* vm_exec.c (cfp): Fixes a SEGV issue in r44554.
+	  r11 can be broken by subroutine and sometimes causes SEGV at
+	  runtime.  Use r13 instead.
+
 Tue Jan 14 02:20:00 2014  Kenta Murata  <mrkn@mrkn.jp>
 
 	* ext/bigdecimal/bigdecimal.c (BigDecimal_divide): Add an additional

vm_exec.c

@@ -47,7 +47,7 @@ vm_exec_core(rb_thread_t *th, VALUE initial)
 
 #if OPT_STACK_CACHING
 #if 0
-#elif __GNUC__ && __x86_64__
+#elif __GNUC__ && __x86_64__ && !defined(__native_client__)
     DECL_SC_REG(VALUE, a, "12");
     DECL_SC_REG(VALUE, b, "13");
 #else
@@ -64,7 +64,7 @@ vm_exec_core(rb_thread_t *th, VALUE initial)
 #elif defined(__GNUC__) && defined(__x86_64__)
     DECL_SC_REG(VALUE *, pc, "14");
 # if defined(__native_client__)
-    DECL_SC_REG(rb_control_frame_t *, cfp, "11");
+    DECL_SC_REG(rb_control_frame_t *, cfp, "13");
 # else
     DECL_SC_REG(rb_control_frame_t *, cfp, "15");
 # endif