implement support for the linux/ppc function call ABI.  Patch by
Nicolas Geoffray!

llvm-svn: 34574
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.h b/llvm/lib/Target/PowerPC/PPCISelLowering.h
index f7e5b65..00e65f6 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.h
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.h
@@ -90,7 +90,7 @@
       
       /// CHAIN,FLAG = BCTRL(CHAIN, INFLAG) - Directly corresponds to a
       /// BCTRL instruction.
-      BCTRL,
+      BCTRL_Macho, BCTRL_ELF,
       
       /// Return with a flag operand, matched by 'blr'
       RET_FLAG,