#include "InstCombine.h"
#include "llvm/Analysis/InstructionSimplify.h"
-#include "llvm/Target/TargetData.h"
+#include "llvm/DataLayout.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/STLExtras.h"
using namespace llvm;
Value *Base = FixedOperands[0];
GetElementPtrInst *NewGEP =
- GetElementPtrInst::Create(Base, FixedOperands.begin()+1,
- FixedOperands.end());
+ GetElementPtrInst::Create(Base, makeArrayRef(FixedOperands).slice(1));
if (AllInBounds) NewGEP->setIsInBounds();
NewGEP->setDebugLoc(FirstInst->getDebugLoc());
return NewGEP;
Instruction *InstCombiner::FoldPHIArgLoadIntoPHI(PHINode &PN) {
LoadInst *FirstLI = cast<LoadInst>(PN.getIncomingValue(0));
-
+
+ // FIXME: This is overconservative; this transform is allowed in some cases
+ // for atomic operations.
+ if (FirstLI->isAtomic())
+ return 0;
+
// When processing loads, we need to propagate two bits of information to the
// sunk load: whether it is volatile, and what its alignment is. We currently
// don't sink loads when some have their alignment specified and some don't.