[COFF, ARM64] Implement InterlockedExchange*_* builtins

Summary: Windows SDK needs these intrinsics to be proper builtins.  This is second in a series of patches to move intrinsic defintions out of intrin.h.

Reviewers: rnk, mstorsjo, efriedma, TomTan

Reviewed By: rnk, efriedma

Subscribers: javed.absar, kristof.beyls, chrib, jfb, kristina, cfe-commits

Differential Revision: https://reviews.llvm.org/D54046

llvm-svn: 346044
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 8571ebb..c072bb8 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -751,6 +751,9 @@
   _InterlockedExchangeAdd_acq,
   _InterlockedExchangeAdd_rel,
   _InterlockedExchangeAdd_nf,
+  _InterlockedExchange_acq,
+  _InterlockedExchange_rel,
+  _InterlockedExchange_nf,
   __fastfail,
 };
 
@@ -826,6 +829,15 @@
   case MSVCIntrin::_InterlockedExchangeAdd_nf:
     return MakeBinaryAtomicValue(*this, AtomicRMWInst::Add, E,
                                  AtomicOrdering::Monotonic);
+  case MSVCIntrin::_InterlockedExchange_acq:
+    return MakeBinaryAtomicValue(*this, AtomicRMWInst::Xchg, E,
+                                 AtomicOrdering::Acquire);
+  case MSVCIntrin::_InterlockedExchange_rel:
+    return MakeBinaryAtomicValue(*this, AtomicRMWInst::Xchg, E,
+                                 AtomicOrdering::Release);
+  case MSVCIntrin::_InterlockedExchange_nf:
+    return MakeBinaryAtomicValue(*this, AtomicRMWInst::Xchg, E,
+                                 AtomicOrdering::Monotonic);
 
   case MSVCIntrin::_InterlockedDecrement: {
     llvm::Type *IntTy = ConvertType(E->getType());
@@ -6132,6 +6144,21 @@
   case ARM::BI_InterlockedExchangeAdd_nf:
   case ARM::BI_InterlockedExchangeAdd64_nf:
     return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedExchangeAdd_nf, E);
+  case ARM::BI_InterlockedExchange8_acq:
+  case ARM::BI_InterlockedExchange16_acq:
+  case ARM::BI_InterlockedExchange_acq:
+  case ARM::BI_InterlockedExchange64_acq:
+    return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedExchange_acq, E);
+  case ARM::BI_InterlockedExchange8_rel:
+  case ARM::BI_InterlockedExchange16_rel:
+  case ARM::BI_InterlockedExchange_rel:
+  case ARM::BI_InterlockedExchange64_rel:
+    return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedExchange_rel, E);
+  case ARM::BI_InterlockedExchange8_nf:
+  case ARM::BI_InterlockedExchange16_nf:
+  case ARM::BI_InterlockedExchange_nf:
+  case ARM::BI_InterlockedExchange64_nf:
+    return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedExchange_nf, E);
   }
 
   // Get the last argument, which specifies the vector type.
@@ -8633,6 +8660,21 @@
   case AArch64::BI_InterlockedExchangeAdd_nf:
   case AArch64::BI_InterlockedExchangeAdd64_nf:
     return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedExchangeAdd_nf, E);
+  case AArch64::BI_InterlockedExchange8_acq:
+  case AArch64::BI_InterlockedExchange16_acq:
+  case AArch64::BI_InterlockedExchange_acq:
+  case AArch64::BI_InterlockedExchange64_acq:
+    return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedExchange_acq, E);
+  case AArch64::BI_InterlockedExchange8_rel:
+  case AArch64::BI_InterlockedExchange16_rel:
+  case AArch64::BI_InterlockedExchange_rel:
+  case AArch64::BI_InterlockedExchange64_rel:
+    return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedExchange_rel, E);
+  case AArch64::BI_InterlockedExchange8_nf:
+  case AArch64::BI_InterlockedExchange16_nf:
+  case AArch64::BI_InterlockedExchange_nf:
+  case AArch64::BI_InterlockedExchange64_nf:
+    return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedExchange_nf, E);
 
   case AArch64::BI_InterlockedAdd: {
     Value *Arg0 = EmitScalarExpr(E->getArg(0));