Remove unused functions and add test case

Author: ahatanak

clang/lib/CodeGen/CodeGenFunction.cpp

@@ -3064,39 +3064,3 @@ void CodeGenFunction::EmitPointerAuthOperandBundle(
   llvm::Value *args[] = {key, discriminator};
   bundles.emplace_back("ptrauth", args);
 }
-
-static llvm::Value *EmitPointerAuthCommon(CodeGenFunction &CGF,
-                                          const CGPointerAuthInfo &pointerAuth,
-                                          llvm::Value *pointer,
-                                          unsigned intrinsicID) {
-  if (!pointerAuth)
-    return pointer;
-
-  auto key = CGF.Builder.getInt32(pointerAuth.getKey());
-
-  llvm::Value *discriminator = pointerAuth.getDiscriminator();
-  if (!discriminator) {
-    discriminator = CGF.Builder.getSize(0);
-  }
-
-  // Convert the pointer to intptr_t before signing it.
-  auto origType = pointer->getType();
-  pointer = CGF.Builder.CreatePtrToInt(pointer, CGF.IntPtrTy);
-
-  // call i64 @llvm.ptrauth.sign.i64(i64 %pointer, i32 %key, i64 %discriminator)
-  auto intrinsic = CGF.CGM.getIntrinsic(intrinsicID);
-  pointer = CGF.EmitRuntimeCall(intrinsic, {pointer, key, discriminator});
-
-  // Convert back to the original type.
-  pointer = CGF.Builder.CreateIntToPtr(pointer, origType);
-  return pointer;
-}
-
-llvm::Value *
-CodeGenFunction::EmitPointerAuthSign(const CGPointerAuthInfo &pointerAuth,
-                                     llvm::Value *pointer) {
-  if (!pointerAuth.shouldSign())
-    return pointer;
-  return EmitPointerAuthCommon(*this, pointerAuth, pointer,
-                               llvm::Intrinsic::ptrauth_sign);
-}

clang/lib/CodeGen/CodeGenFunction.h

@@ -4420,9 +4420,6 @@ class CodeGenFunction : public CodeGenTypeCache {
                                         llvm::Value *storageAddress,
                                         GlobalDecl calleeDecl,
                                         QualType calleeType);
-  llvm::Value *EmitPointerAuthSign(QualType pointeeType, llvm::Value *pointer);
-  llvm::Value *EmitPointerAuthSign(const CGPointerAuthInfo &info,
-                                   llvm::Value *pointer);
   void EmitPointerAuthOperandBundle(
       const CGPointerAuthInfo &info,
       SmallVectorImpl<llvm::OperandBundleDef> &bundles);

clang/test/CodeGen/ptrauth-function.c

@@ -0,0 +1,28 @@
+// RUN: %clang_cc1 -triple arm64-apple-ios -fptrauth-calls -fptrauth-intrinsics -emit-llvm %s  -o - | FileCheck -check-prefix=CHECK %s
+
+void test_call();
+
+// CHECK-LABEL: define void @test_direct_call()
+void test_direct_call() {
+  // CHECK: call void @test_call(){{$}}
+  test_call();
+}
+
+void abort();
+// CHECK-LABEL: define void @test_direct_builtin_call()
+void test_direct_builtin_call() {
+  // CHECK: call void @abort() {{#[0-9]+$}}
+  abort();
+}
+
+// CHECK-LABEL: define void @test_memcpy_inline(
+// CHECK-NOT: call{{.*}}memcpy
+
+extern inline __attribute__((__always_inline__))
+void *memcpy(void *d, const void *s, unsigned long) {
+  return 0;
+}
+
+void test_memcpy_inline(char *d, char *s) {
+  memcpy(d, s, 4);
+}