commit 574caddc0dd2e9303ad347937583d41253a500e6
author Mandeep Singh Grang <mgrang@codeaurora.org> Tue Nov 06 05:07:43 2018 +0000
committer Mandeep Singh Grang <mgrang@codeaurora.org> Tue Nov 06 05:07:43 2018 +0000
tree 9b97da35b99451ccb47e0a75aa83cb3a76e48053
parent fdf74d975177d3989e12f125bc01eb24adb031b4

[COFF, ARM64] Implement InterlockedDecrement*_* builtins

This is eight in a series of patches to move intrinsic definitions out of intrin.h.

Differential: https://reviews.llvm.org/D54068
llvm-svn: 346208

clang/lib/CodeGen/CGBuiltin.cpp

diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index c76ee5d..76b46c7 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -285,6 +285,19 @@
   return CGF.Builder.CreateAdd(Result, ConstantInt::get(IntTy, 1));
 }
 
+static Value *EmitAtomicDecrementValue(CodeGenFunction &CGF, const CallExpr *E,
+    AtomicOrdering Ordering = AtomicOrdering::SequentiallyConsistent) {
+  assert(E->getArg(0)->getType()->isPointerType());
+
+  auto *IntTy = CGF.ConvertType(E->getType());
+  auto *Result = CGF.Builder.CreateAtomicRMW(
+                   AtomicRMWInst::Sub,
+                   CGF.EmitScalarExpr(E->getArg(0)),
+                   ConstantInt::get(IntTy, 1),
+                   Ordering);
+  return CGF.Builder.CreateSub(Result, ConstantInt::get(IntTy, 1));
+}
+
 // Emit a simple mangled intrinsic that has 1 argument and a return type
 // matching the argument type.
 static Value *emitUnaryBuiltin(CodeGenFunction &CGF,
@@ -824,6 +837,9 @@
   _InterlockedIncrement_acq,
   _InterlockedIncrement_rel,
   _InterlockedIncrement_nf,
+  _InterlockedDecrement_acq,
+  _InterlockedDecrement_rel,
+  _InterlockedDecrement_nf,
   __fastfail,
 };
 
@@ -947,16 +963,15 @@
     return EmitAtomicIncrementValue(*this, E, AtomicOrdering::Release);
   case MSVCIntrin::_InterlockedIncrement_nf:
     return EmitAtomicIncrementValue(*this, E, AtomicOrdering::Monotonic);
+  case MSVCIntrin::_InterlockedDecrement_acq:
+    return EmitAtomicDecrementValue(*this, E, AtomicOrdering::Acquire);
+  case MSVCIntrin::_InterlockedDecrement_rel:
+    return EmitAtomicDecrementValue(*this, E, AtomicOrdering::Release);
+  case MSVCIntrin::_InterlockedDecrement_nf:
+    return EmitAtomicDecrementValue(*this, E, AtomicOrdering::Monotonic);
 
-  case MSVCIntrin::_InterlockedDecrement: {
-    llvm::Type *IntTy = ConvertType(E->getType());
-    AtomicRMWInst *RMWI = Builder.CreateAtomicRMW(
-      AtomicRMWInst::Sub,
-      EmitScalarExpr(E->getArg(0)),
-      ConstantInt::get(IntTy, 1),
-      llvm::AtomicOrdering::SequentiallyConsistent);
-    return Builder.CreateSub(RMWI, ConstantInt::get(IntTy, 1));
-  }
+  case MSVCIntrin::_InterlockedDecrement:
+    return EmitAtomicDecrementValue(*this, E);
   case MSVCIntrin::_InterlockedIncrement:
     return EmitAtomicIncrementValue(*this, E);
 
@@ -6325,6 +6340,18 @@
   case ARM::BI_InterlockedIncrement_nf:
   case ARM::BI_InterlockedIncrement64_nf:
     return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedIncrement_nf, E);
+  case ARM::BI_InterlockedDecrement16_acq:
+  case ARM::BI_InterlockedDecrement_acq:
+  case ARM::BI_InterlockedDecrement64_acq:
+    return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedDecrement_acq, E);
+  case ARM::BI_InterlockedDecrement16_rel:
+  case ARM::BI_InterlockedDecrement_rel:
+  case ARM::BI_InterlockedDecrement64_rel:
+    return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedDecrement_rel, E);
+  case ARM::BI_InterlockedDecrement16_nf:
+  case ARM::BI_InterlockedDecrement_nf:
+  case ARM::BI_InterlockedDecrement64_nf:
+    return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedDecrement_nf, E);
   }
 
   // Get the last argument, which specifies the vector type.
@@ -8913,6 +8940,18 @@
   case AArch64::BI_InterlockedIncrement_nf:
   case AArch64::BI_InterlockedIncrement64_nf:
     return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedIncrement_nf, E);
+  case AArch64::BI_InterlockedDecrement16_acq:
+  case AArch64::BI_InterlockedDecrement_acq:
+  case AArch64::BI_InterlockedDecrement64_acq:
+    return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedDecrement_acq, E);
+  case AArch64::BI_InterlockedDecrement16_rel:
+  case AArch64::BI_InterlockedDecrement_rel:
+  case AArch64::BI_InterlockedDecrement64_rel:
+    return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedDecrement_rel, E);
+  case AArch64::BI_InterlockedDecrement16_nf:
+  case AArch64::BI_InterlockedDecrement_nf:
+  case AArch64::BI_InterlockedDecrement64_nf:
+    return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedDecrement_nf, E);
 
   case AArch64::BI_InterlockedAdd: {
     Value *Arg0 = EmitScalarExpr(E->getArg(0));