From: Eli Friedman <eli.friedman@gmail.com>
Date: Thu, 1 Sep 2011 21:03:03 +0000 (+0000)
Subject: Make isSafeToSpeculativelyExecute() return the right answer for some new instructions... 
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=81b4e434d98d4d2ed0a7b493b3ecd09dd7735275;p=oota-llvm.git

Make isSafeToSpeculativelyExecute() return the right answer for some new instructions.  Found by inspection; not sure what practical impact, if any, this has.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138962 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/VMCore/Instruction.cpp b/lib/VMCore/Instruction.cpp
index f54cec11e2e..73191c19658 100644
--- a/lib/VMCore/Instruction.cpp
+++ b/lib/VMCore/Instruction.cpp
@@ -436,6 +436,10 @@ bool Instruction::isSafeToSpeculativelyExecute() const {
   case Unwind:
   case Unreachable:
   case Fence:
+  case LandingPad:
+  case AtomicRMW:
+  case AtomicCmpXchg:
+  case Resume:
     return false; // Misc instructions which have effects
   }
 }