Struct-path aware TBAA: uniformize scalar tag and path tag.
For struct-path aware TBAA, we used to use scalar type node as the scalar tag,
which has an incompatible format with the struct path tag. We now use the same
format: base type, access type and offset.
We also uniformize the scalar type node and the struct type node: name, a list
of pairs (offset + pointer to MDNode). For scalar type, we have a single pair.
These are to make implementaiton of aliasing rules easier.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179335 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index fe0d070..4d72dc1 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -1175,7 +1175,7 @@
if (TBAAInfo) {
llvm::MDNode *TBAAPath = CGM.getTBAAStructTagInfo(TBAABaseType, TBAAInfo,
TBAAOffset);
- CGM.DecorateInstruction(Load, TBAAPath);
+ CGM.DecorateInstruction(Load, TBAAPath, false/*ConvertTypeToTag*/);
}
if ((SanOpts->Bool && hasBooleanRepresentation(Ty)) ||
@@ -1289,7 +1289,7 @@
if (TBAAInfo) {
llvm::MDNode *TBAAPath = CGM.getTBAAStructTagInfo(TBAABaseType, TBAAInfo,
TBAAOffset);
- CGM.DecorateInstruction(Store, TBAAPath);
+ CGM.DecorateInstruction(Store, TBAAPath, false/*ConvertTypeToTag*/);
}
}