[PATCH] D53960: [COFF, ARM64] Implement llvm.addressofreturnaddress intrinsic

[Mandeep Singh Grang via Phabricator via cfe-commits]

mgrang created this revision.
mgrang added reviewers: rnk, mstorsjo, efriedma, TomTan.
Herald added subscribers: chrib, kristof.beyls, javed.absar.

Repository:
  rC Clang

https://reviews.llvm.org/D53960

Files:
  include/clang/Basic/BuiltinsAArch64.def
  lib/CodeGen/CGBuiltin.cpp
  test/CodeGen/ms-intrinsics.c


Index: test/CodeGen/ms-intrinsics.c
===================================================================
--- test/CodeGen/ms-intrinsics.c
+++ test/CodeGen/ms-intrinsics.c
@@ -137,7 +137,7 @@
 // CHECK: = tail call i8* @llvm.returnaddress(i32 0)
 // CHECK: ret i8*
 
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined (__aarch64__)
 void *test_AddressOfReturnAddress() {
   return _AddressOfReturnAddress();
 }
Index: lib/CodeGen/CGBuiltin.cpp
===================================================================
--- lib/CodeGen/CGBuiltin.cpp
+++ lib/CodeGen/CGBuiltin.cpp
@@ -6740,6 +6740,11 @@
     return Builder.CreateCall(F, { Metadata, ArgValue });
   }
 
+  if (BuiltinID == AArch64::BI_AddressOfReturnAddress) {
+    llvm::Value *F = CGM.getIntrinsic(Intrinsic::addressofreturnaddress);
+    return Builder.CreateCall(F);
+  }
+
   // Find out if any arguments are required to be integer constant
   // expressions.
   unsigned ICEArguments = 0;
Index: include/clang/Basic/BuiltinsAArch64.def
===================================================================
--- include/clang/Basic/BuiltinsAArch64.def
+++ include/clang/Basic/BuiltinsAArch64.def
@@ -103,6 +103,7 @@
 TARGET_HEADER_BUILTIN(_InterlockedIncrement64,   "LLiLLiD*",    "nh", "intrin.h", ALL_MS_LANGUAGES, "")
 TARGET_HEADER_BUILTIN(_InterlockedOr64,          "LLiLLiD*LLi", "nh", "intrin.h", ALL_MS_LANGUAGES, "")
 TARGET_HEADER_BUILTIN(_InterlockedXor64,         "LLiLLiD*LLi", "nh", "intrin.h", ALL_MS_LANGUAGES, "")
+TARGET_HEADER_BUILTIN(_AddressOfReturnAddress,   "v*",          "nh", "intrin.h", ALL_MS_LANGUAGES, "")
 
 TARGET_HEADER_BUILTIN(_ReadWriteBarrier, "v", "nh", "intrin.h", ALL_MS_LANGUAGES, "")
 TARGET_HEADER_BUILTIN(__getReg, "ULLii", "nh", "intrin.h", ALL_MS_LANGUAGES, "")


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