Initial implementation of 'fence' instruction, the new C++0x-style replacement for llvm.memory.barrier.
This is just a LangRef entry and reading/writing/memory representation; optimizer+codegen support coming soon.
llvm-svn: 136009
diff --git a/llvm/lib/VMCore/Instructions.cpp b/llvm/lib/VMCore/Instructions.cpp
index 6d27689..ba4dae5 100644
--- a/llvm/lib/VMCore/Instructions.cpp
+++ b/llvm/lib/VMCore/Instructions.cpp
@@ -996,6 +996,26 @@
}
//===----------------------------------------------------------------------===//
+// FenceInst Implementation
+//===----------------------------------------------------------------------===//
+
+FenceInst::FenceInst(LLVMContext &C, AtomicOrdering Ordering,
+ SynchronizationScope SynchScope,
+ Instruction *InsertBefore)
+ : Instruction(Type::getVoidTy(C), Fence, 0, 0, InsertBefore) {
+ setOrdering(Ordering);
+ setSynchScope(SynchScope);
+}
+
+FenceInst::FenceInst(LLVMContext &C, AtomicOrdering Ordering,
+ SynchronizationScope SynchScope,
+ BasicBlock *InsertAtEnd)
+ : Instruction(Type::getVoidTy(C), Fence, 0, 0, InsertAtEnd) {
+ setOrdering(Ordering);
+ setSynchScope(SynchScope);
+}
+
+//===----------------------------------------------------------------------===//
// GetElementPtrInst Implementation
//===----------------------------------------------------------------------===//
@@ -3018,6 +3038,10 @@
isVolatile(), getAlignment());
}
+FenceInst *FenceInst::clone_impl() const {
+ return new FenceInst(getContext(), getOrdering(), getSynchScope());
+}
+
TruncInst *TruncInst::clone_impl() const {
return new TruncInst(getOperand(0), getType());
}