From: Robin Morisset <morisset@google.com>
Date: Fri, 15 Aug 2014 22:25:12 +0000 (+0000)
Subject: Add two helper functions: isAtLeastAcquire, isAtLeastRelease
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f11a5fc12db1d8c8008541db0b923ca42d7eb907;p=oota-llvm.git

Add two helper functions: isAtLeastAcquire, isAtLeastRelease

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215779 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/IR/Instructions.h b/include/llvm/IR/Instructions.h
index 308467f7aa1..f533ef5c37e 100644
--- a/include/llvm/IR/Instructions.h
+++ b/include/llvm/IR/Instructions.h
@@ -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
 //===----------------------------------------------------------------------===//