Add a new optimization pass: Stack Coloring, that merges disjoint static allocations (allocas). Allocas are known to be

disjoint if they are marked by disjoint lifetime markers (@llvm.lifetime.XXX intrinsics).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163299 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp

@@ -97,7 +97,7 @@ void FunctionLoweringInfo::set(const Function &fn, MachineFunction &mf) {
             cast<ArrayType>(Ty)->getElementType()->isIntegerTy(8)));
         StaticAllocaMap[AI] =
           MF->getFrameInfo()->CreateStackObject(TySize, Align, false,
-                                                MayNeedSP);
+                                                MayNeedSP, AI);
       }
 
   for (; BB != EB; ++BB)