[ImplicitNullCheck] Extend Implicit Null Check scope by using stores
Summary:
This change allows usage of store instruction for implicit null check.
Memory Aliasing Analisys is not used and change conservatively supposes
that any store and load may access the same memory. As a result
re-ordering of store-store, store-load and load-store is prohibited.
Patch by Serguei Katkov!
Reviewers: reames, sanjoy
Reviewed By: sanjoy
Subscribers: atrick, llvm-commits
Differential Revision: https://reviews.llvm.org/D29400
llvm-svn: 294338
diff --git a/llvm/lib/CodeGen/FaultMaps.cpp b/llvm/lib/CodeGen/FaultMaps.cpp
index 2acafaf..374d6c7 100644
--- a/llvm/lib/CodeGen/FaultMaps.cpp
+++ b/llvm/lib/CodeGen/FaultMaps.cpp
@@ -110,6 +110,10 @@
case FaultMaps::FaultingLoad:
return "FaultingLoad";
+ case FaultMaps::FaultingLoadStore:
+ return "FaultingLoadStore";
+ case FaultMaps::FaultingStore:
+ return "FaultingStore";
}
}