Add one more 'magic' define :)

llvm-svn: 52420
diff --git a/llvm/lib/Target/PowerPC/PPCJITInfo.cpp b/llvm/lib/Target/PowerPC/PPCJITInfo.cpp
index f241c09..f400297 100644
--- a/llvm/lib/Target/PowerPC/PPCJITInfo.cpp
+++ b/llvm/lib/Target/PowerPC/PPCJITInfo.cpp
@@ -331,7 +331,8 @@
 #endif
 
 void PPCJITInfo::InvalidateInstructionCache(const void *Addr, unsigned len) {
-#if (defined(__POWERPC__) || defined (__ppc__) || defined(_POWER))
+#if (defined(__POWERPC__) || defined (__ppc__) || \
+     defined(_POWER) || defined(_ARCH_PPC))
 # if defined(__APPLE__)
   sys_icache_invalidate(Addr, len);
 # elif defined(__GNUC__)