* vm_exec.c: improve performance in ppc64 arch.

[ruby-core:63437] [Feature #9997]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47149 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Tue Aug 12 12:57:28 2014  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
+
+	* vm_exec.c: improve performance in ppc64 arch.
+	  [ruby-core:63437] [Feature #9997]
+
 Tue Aug 12 12:14:52 2014  Akira Matsuda <ronnie@dio.jp>
 
 	* lib/fileutils.rb: fix typo.

vm_exec.c

@@ -24,6 +24,9 @@ static void vm_analysis_insn(int insn);
 #elif defined(__GNUC__) && defined(__i386__)
 #define DECL_SC_REG(type, r, reg) register type reg_##r __asm__("e" reg)
 
+#elif defined(__GNUC__) && defined(__powerpc64__)
+#define DECL_SC_REG(type, r, reg) register type reg_##r __asm__("r" reg)
+
 #else
 #define DECL_SC_REG(type, r, reg) register type reg_##r
 #endif
@@ -70,6 +73,11 @@ vm_exec_core(rb_thread_t *th, VALUE initial)
 # endif
 #define USE_MACHINE_REGS 1
 
+#elif defined(__GNUC__) && defined(__powerpc64__)
+    DECL_SC_REG(VALUE *, pc, "14");
+    DECL_SC_REG(rb_control_frame_t *, cfp, "15");
+#define USE_MACHINE_REGS 1
+
 #else
     register rb_control_frame_t *reg_cfp;
     VALUE *reg_pc;