Contribution of PowerPC port.

src/full-codegen.h

Index: src/full-codegen.h
diff --git a/src/full-codegen.h b/src/full-codegen.h
index 6814946529b5f3aad13af1a78b238e74c2b181ba..77f1b6efb734494288346be753e58c4206976cbe 100644
--- a/src/full-codegen.h
+++ b/src/full-codegen.h
@@ -112,6 +112,14 @@ class FullCodeGenerator: public AstVisitor {
 // TODO(all): Copied ARM value. Check this is sensible for ARM64.
   static const int kCodeSizeMultiplier = 149;
   static const int kBootCodeSizeMultiplier = 110;
+#elif V8_TARGET_ARCH_PPC64
+  // TODO(all): Check this is sensible for PPC64.
+  static const int kCodeSizeMultiplier = 142;
+  static const int kBootCodeSizeMultiplier = 175;
+#elif V8_TARGET_ARCH_PPC
+  // TODO(all): Check this is sensible for PPC.
+  static const int kCodeSizeMultiplier = 142;
+  static const int kBootCodeSizeMultiplier = 130;
 #elif V8_TARGET_ARCH_MIPS
   static const int kCodeSizeMultiplier = 149;
   static const int kBootCodeSizeMultiplier = 120;
@@ -330,12 +338,15 @@ class FullCodeGenerator: public AstVisitor {
              Label* if_true,
              Label* if_false,
              Label* fall_through);
-#else  // All non-mips arch.
+#elif V8_TARGET_ARCH_PPC
+  void Split(Condition cc, Label* if_true, Label* if_false, Label* fall_through,
+             CRegister cr = cr7);
+#else  // All other arch.
   void Split(Condition cc,
              Label* if_true,
              Label* if_false,
              Label* fall_through);
-#endif  // V8_TARGET_ARCH_MIPS
+#endif
 
   // Load the value of a known (PARAMETER, LOCAL, or CONTEXT) variable into
   // a register.  Emits a context chain walk if if necessary (so does