From: JF Bastien <jfb@google.com>
Date: Thu, 7 Apr 2016 15:50:05 +0000 (+0000)
Subject: NFC: disallow comparison of AtomicOrdering
X-Git-Tag: llvmorg-3.9.0-rc1~9728
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e1951092ff6a40b0c602396d9d357e9fbe464b5f;p=platform%2Fupstream%2Fllvm.git

NFC: disallow comparison of AtomicOrdering

Follow-up to D18775 and related clang change. AtomicOrdering is a lattice, 'stronger' is the right thing to do, direct comparison is fraught with peril.

llvm-svn: 265685
---

diff --git a/llvm/include/llvm/IR/Instructions.h b/llvm/include/llvm/IR/Instructions.h
index 4fd5cad..df3bb71 100644
--- a/llvm/include/llvm/IR/Instructions.h
+++ b/llvm/include/llvm/IR/Instructions.h
@@ -53,6 +53,11 @@ enum class AtomicOrdering {
   SequentiallyConsistent = 7
 };
 
+bool operator<(AtomicOrdering, AtomicOrdering) = delete;
+bool operator>(AtomicOrdering, AtomicOrdering) = delete;
+bool operator<=(AtomicOrdering, AtomicOrdering) = delete;
+bool operator>=(AtomicOrdering, AtomicOrdering) = delete;
+
 /// String used by LLVM IR to represent atomic ordering.
 static inline const char *toIRString(AtomicOrdering ao) {
   static const char *names[8] = {"not_atomic", "unordered", "monotonic",