Change a bunch of isVolatile() checks to check for atomic load/store as well.

No tests; these changes aren't really interesting in the sense that the logic is the same for volatile and atomic.

I believe this completes all of the changes necessary for the optimizer to handle loads and stores correctly.  I'm going to try and come up with some additional testing, though.

llvm-svn: 139533

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/Transforms/Scalar/EarlyCSE.cpp b/llvm/lib/Transforms/Scalar/EarlyCSE.cpp
index 3d3f17b26fc..022af40c638 100644
--- a/llvm/lib/Transforms/Scalar/EarlyCSE.cpp
+++ b/llvm/lib/Transforms/Scalar/EarlyCSE.cpp
@@ -357,7 +357,7 @@ bool EarlyCSE::processNode(DomTreeNode *Node) {
     // If this is a non-volatile load, process it.
     if (LoadInst *LI = dyn_cast<LoadInst>(Inst)) {
       // Ignore volatile loads.
-      if (LI->isVolatile()) {
+      if (!LI->isSimple()) {
         LastStore = 0;
         continue;
       }
@@ -437,7 +437,7 @@ bool EarlyCSE::processNode(DomTreeNode *Node) {
          std::pair<Value*, unsigned>(SI->getValueOperand(), CurrentGeneration));
         
         // Remember that this was the last store we saw for DSE.
-        if (!SI->isVolatile())
+        if (SI->isSimple())
           LastStore = SI;
       }
     }