Propagate alloca alignment information via variable size object frame
information.
No functional change yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108583 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/CodeGen/MachineFrameInfo.h b/include/llvm/CodeGen/MachineFrameInfo.h
index 9471316..86fb237 100644
--- a/include/llvm/CodeGen/MachineFrameInfo.h
+++ b/include/llvm/CodeGen/MachineFrameInfo.h
@@ -417,9 +417,10 @@
/// variable sized object is created, whether or not the index returned is
/// actually used.
///
- int CreateVariableSizedObject() {
+ int CreateVariableSizedObject(unsigned Alignment) {
HasVarSizedObjects = true;
- Objects.push_back(StackObject(0, 1, 0, false, false));
+ Objects.push_back(StackObject(0, Alignment, 0, false, false));
+ MaxAlignment = std::max(MaxAlignment, Alignment);
return (int)Objects.size()-NumFixedObjects-1;
}
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 4a0004a..723e0f0 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -2848,7 +2848,7 @@
// Inform the Frame Information that we have just allocated a variable-sized
// object.
- FuncInfo.MF->getFrameInfo()->CreateVariableSizedObject();
+ FuncInfo.MF->getFrameInfo()->CreateVariableSizedObject(Align ? Align : 1);
}
void SelectionDAGBuilder::visitLoad(const LoadInst &I) {