add framework for ARM builtins, Patch by Edmund Grimley Evans!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97656 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 16 insertions, 0 deletions

diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index 0f5e90fb15..df6ac7fc24 100644
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -735,6 +735,9 @@ RValue CodeGenFunction::EmitBuiltinExpr(const FunctionDecl *FD,
 Value *CodeGenFunction::EmitTargetBuiltinExpr(unsigned BuiltinID,
                                               const CallExpr *E) {
   switch (Target.getTriple().getArch()) {
+  case llvm::Triple::arm:
+  case llvm::Triple::thumb:
+    return EmitARMBuiltinExpr(BuiltinID, E);
   case llvm::Triple::x86:
   case llvm::Triple::x86_64:
     return EmitX86BuiltinExpr(BuiltinID, E);
@@ -746,6 +749,18 @@ Value *CodeGenFunction::EmitTargetBuiltinExpr(unsigned BuiltinID,
   }
 }
 
+Value *CodeGenFunction::EmitARMBuiltinExpr(unsigned BuiltinID,
+                                           const CallExpr *E) {
+  switch (BuiltinID) {
+  default: return 0;
+
+  case ARM::BI__builtin_thread_pointer: {
+    Value *AtomF = CGM.getIntrinsic(Intrinsic::arm_thread_pointer, 0, 0);
+    return Builder.CreateCall(AtomF);
+  }
+  }
+}
+
 Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID,
                                            const CallExpr *E) {
 
diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index d582c0def3..88d6413300 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -1122,6 +1122,7 @@ public:
   /// is unhandled by the current target.
   llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
 
+  llvm::Value *EmitARMBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
   llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E);
   llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E);