r343699 - [COFF, ARM64] Add _ReadWriteBarrier intrinsic

[Mandeep Singh Grang via cfe-commits]

Author: mgrang
Date: Wed Oct  3 10:24:21 2018
New Revision: 343699

URL: http://llvm.org/viewvc/llvm-project?rev=343699&view=rev
Log:
[COFF, ARM64] Add _ReadWriteBarrier intrinsic

Reviewers: rnk, mstorsjo, compnerd, TomTan, haripul, javed.absar

Reviewed By: rnk

Subscribers: kristof.beyls, chrib, jfb, cfe-commits

Differential Revision: https://reviews.llvm.org/D52809

Modified:
    cfe/trunk/include/clang/Basic/BuiltinsAArch64.def
    cfe/trunk/lib/CodeGen/CGBuiltin.cpp
    cfe/trunk/test/CodeGen/arm64-microsoft-intrinsics.c

Modified: cfe/trunk/include/clang/Basic/BuiltinsAArch64.def
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/BuiltinsAArch64.def?rev=343699&r1=343698&r2=343699&view=diff
==============================================================================
--- cfe/trunk/include/clang/Basic/BuiltinsAArch64.def (original)
+++ cfe/trunk/include/clang/Basic/BuiltinsAArch64.def Wed Oct  3 10:24:21 2018
@@ -103,6 +103,8 @@ TARGET_HEADER_BUILTIN(_InterlockedIncrem
 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(_ReadWriteBarrier, "v", "nh", "intrin.h", ALL_MS_LANGUAGES, "")
+
 #undef BUILTIN
 #undef LANGBUILTIN
 #undef TARGET_HEADER_BUILTIN

Modified: cfe/trunk/lib/CodeGen/CGBuiltin.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGBuiltin.cpp?rev=343699&r1=343698&r2=343699&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CGBuiltin.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGBuiltin.cpp Wed Oct  3 10:24:21 2018
@@ -6581,6 +6581,10 @@ Value *CodeGenFunction::EmitAArch64Built
     return Builder.CreateCall(F);
   }
 
+  if (BuiltinID == AArch64::BI_ReadWriteBarrier)
+    return Builder.CreateFence(llvm::AtomicOrdering::SequentiallyConsistent,
+                               llvm::SyncScope::SingleThread);
+
   // CRC32
   Intrinsic::ID CRCIntrinsicID = Intrinsic::not_intrinsic;
   switch (BuiltinID) {

Modified: cfe/trunk/test/CodeGen/arm64-microsoft-intrinsics.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/arm64-microsoft-intrinsics.c?rev=343699&r1=343698&r2=343699&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/arm64-microsoft-intrinsics.c (original)
+++ cfe/trunk/test/CodeGen/arm64-microsoft-intrinsics.c Wed Oct  3 10:24:21 2018
@@ -59,3 +59,10 @@ void check__sevl(void) {
 
 // CHECK-MSVC: @llvm.aarch64.hint(i32 5)
 // CHECK-LINUX: error: implicit declaration of function '__sevl'
+
+void check_ReadWriteBarrier() {
+  _ReadWriteBarrier();
+}
+
+// CHECK-MSVC: fence syncscope("singlethread")
+// CHECK-LINUX: error: implicit declaration of function '_ReadWriteBarrier'