[llvm] r215779 - Add two helper functions: isAtLeastAcquire, isAtLeastRelease

[Robin Morisset]

Author: morisset
Date: Fri Aug 15 17:25:12 2014
New Revision: 215779

URL: http://llvm.org/viewvc/llvm-project?rev=215779&view=rev
Log:
Add two helper functions: isAtLeastAcquire, isAtLeastRelease

These methods are available on AtomicOrdering values, and will be used
in a later separate patch.

Modified:
    llvm/trunk/include/llvm/IR/Instructions.h

Modified: llvm/trunk/include/llvm/IR/Instructions.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/Instructions.h?rev=215779&r1=215778&r2=215779&view=diff
==============================================================================
--- llvm/trunk/include/llvm/IR/Instructions.h (original)
+++ llvm/trunk/include/llvm/IR/Instructions.h Fri Aug 15 17:25:12 2014
@@ -50,6 +50,22 @@ enum SynchronizationScope {
   CrossThread = 1
 };
 
+/// Returns true if the ordering is at least as strong as acquire
+/// (i.e. acquire, acq_rel or seq_cst)
+inline bool isAtLeastAcquire(AtomicOrdering Ord) {
+   return (Ord == Acquire ||
+    Ord == AcquireRelease ||
+    Ord == SequentiallyConsistent);
+}
+
+/// Returns true if the ordering is at least as strong as release
+/// (i.e. release, acq_rel or seq_cst)
+inline bool isAtLeastRelease(AtomicOrdering Ord) {
+return (Ord == Release ||
+    Ord == AcquireRelease ||
+    Ord == SequentiallyConsistent);
+}
+
 //===----------------------------------------------------------------------===//
 //                                AllocaInst Class
 //===----------------------------------------------------------------------===//