Fix the build on non ppc machines

llvm-svn: 18235
diff --git a/llvm/lib/Target/PowerPC/PPC32JITInfo.cpp b/llvm/lib/Target/PowerPC/PPC32JITInfo.cpp
index 15b2aa1..a41385b 100644
--- a/llvm/lib/Target/PowerPC/PPC32JITInfo.cpp
+++ b/llvm/lib/Target/PowerPC/PPC32JITInfo.cpp
@@ -78,6 +78,11 @@
     "addi r4, r1, 44\n"   // &FPRegs[0]
     "bl _PPC32CompilationCallbackC\n"
     );
+#else
+void PPC32CompilationCallback() {
+  assert(0 && "This is not a power pc, you can't execute this!");
+  abort();
+}
 #endif
 
 extern "C" void PPC32CompilationCallbackC(unsigned *IntRegs, double *FPRegs) {