[clang] Conditionally include target intrinsics, based on --enable-target

lib/CodeGen/CGBuiltin.cpp

Index: lib/CodeGen/CGBuiltin.cpp
===================================================================
--- lib/CodeGen/CGBuiltin.cpp	(revision 138929)
+++ lib/CodeGen/CGBuiltin.cpp	(working copy)
@@ -1188,6 +1188,7 @@
 
 Value *CodeGenFunction::EmitARMBuiltinExpr(unsigned BuiltinID,
                                            const CallExpr *E) {
+#if defined(TARGET_ENABLED_ARM)
   if (BuiltinID == ARM::BI__clear_cache) {
     const FunctionDecl *FD = E->getDirectCallee();
     // Oddly people write this call without args on occasion and gcc accepts
@@ -1918,6 +1919,10 @@
     return SV;
   }
   }
+#else
+  assert(0 && "EmitARMBuiltinExpr w/out TARGET_ENABLED_ARM defined");
+#endif  // TARGET_ENABLED_ARM
+  return 0;
 }
 
 llvm::Value *CodeGenFunction::
@@ -1949,6 +1954,7 @@
 
 Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID,
                                            const CallExpr *E) {
+#if defined(TARGET_ENABLED_X86)
   SmallVector<Value*, 4> Ops;
 
   // Find out if any arguments are required to be integer constant expressions.
@@ -2348,10 +2354,15 @@
     return Builder.CreateCall(F, Ops, name);
   }
   }
+#else
+  assert(0 && "EmitX86BuiltinExpr w/out TARGET_ENABLED_X86 defined!");
+#endif  // defined(TARGET_ENABLED_X86)
+  return 0;
 }
 
 Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
                                            const CallExpr *E) {
+#if defined(TARGET_ENABLED_POWERPC)
   SmallVector<Value*, 4> Ops;
 
   for (unsigned i = 0, e = E->getNumArgs(); i != e; i++)
@@ -2437,5 +2448,9 @@
     return Builder.CreateCall(F, Ops, "");
   }
   }
+#else
+  assert(0 && "EmitPPCBuiltinExpr w/out TARGET_ENABLED_POWERPC defined!");
+#endif // TARGET_ENABLED_POWERPC
+
   return 0;
 }