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
diff --git a/llvm/lib/Transforms/Scalar/EarlyCSE.cpp b/llvm/lib/Transforms/Scalar/EarlyCSE.cpp
index 3d3f17b..022af40 100644
--- a/llvm/lib/Transforms/Scalar/EarlyCSE.cpp
+++ b/llvm/lib/Transforms/Scalar/EarlyCSE.cpp
@@ -357,7 +357,7 @@
// 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 @@
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;
}
}