[DebugInfo] Refactor DbgInfoIntrinsic class hierarchy.
In the past, DbgInfoIntrinsic has a strong assumption that these
intrinsics all have variables and expressions attached to them.
However, it is too strong to derive the class for other debug entities.
Now, it has problems for debug labels.
In order to make DbgInfoIntrinsic as a base class for 'debug info', I
create a class for 'variable debug info', DbgVariableIntrinsic.
DbgDeclareInst, DbgAddrIntrinsic, and DbgValueInst will be derived from it.
Differential Revision: https://reviews.llvm.org/D50220
llvm-svn: 338984
diff --git a/llvm/lib/Transforms/Scalar/Reassociate.cpp b/llvm/lib/Transforms/Scalar/Reassociate.cpp
index 1df0a9c..03cd7c1 100644
--- a/llvm/lib/Transforms/Scalar/Reassociate.cpp
+++ b/llvm/lib/Transforms/Scalar/Reassociate.cpp
@@ -788,7 +788,7 @@
// Discard any debug info related to the expressions that has changed (we
// can leave debug infor related to the root, since the result of the
// expression tree should be the same even after reassociation).
- SmallVector<DbgInfoIntrinsic *, 1> DbgUsers;
+ SmallVector<DbgVariableIntrinsic *, 1> DbgUsers;
findDbgUsers(DbgUsers, ExpressionChanged);
for (auto *DII : DbgUsers) {
Value *Undef = UndefValue::get(ExpressionChanged->getType());