[clang][dataflow] Include terminator statements in buildStmtToBasicBlockMap

This will be necessary later when we add support for evaluating logic
expressions such as && and ||.

This is part of the implementation of the dataflow analysis framework.
See "[RFC] A dataflow analysis framework for Clang AST" on cfe-dev.

Reviewed-by: xazax.hun

Differential Revision: https://reviews.llvm.org/D119447

clang/lib/Analysis/FlowSensitive/ControlFlowContext.cpp

@@ -38,6 +38,8 @@ buildStmtToBasicBlockMap(const CFG &Cfg) {
 
       StmtToBlock[Stmt.getValue().getStmt()] = Block;
     }
+    if (const Stmt *TerminatorStmt = Block->getTerminatorStmt())
+      StmtToBlock[TerminatorStmt] = Block;
   }
   return StmtToBlock;
 }