Reduce dyn_cast<> to isa<> or cast<> where possible. Clang edition.

No functional change intended.

llvm-svn: 234587

3 files changed, 8 insertions, 10 deletions

diff --git a/clang/lib/Sema/SemaDeclObjC.cpp b/clang/lib/Sema/SemaDeclObjC.cpp
index a12f2b1b3b1..800abd13e08 100644
--- a/clang/lib/Sema/SemaDeclObjC.cpp
+++ b/clang/lib/Sema/SemaDeclObjC.cpp
@@ -2580,10 +2580,9 @@ Sema::ObjCContainerKind Sema::getObjCContainerKind() const {
     case Decl::ObjCProtocol:
       return Sema::OCK_Protocol;
     case Decl::ObjCCategory:
-      if (dyn_cast<ObjCCategoryDecl>(CurContext)->IsClassExtension())
+      if (cast<ObjCCategoryDecl>(CurContext)->IsClassExtension())
         return Sema::OCK_ClassExtension;
-      else
-        return Sema::OCK_Category;
+      return Sema::OCK_Category;
     case Decl::ObjCImplementation:
       return Sema::OCK_Implementation;
     case Decl::ObjCCategoryImpl:
diff --git a/clang/lib/Sema/SemaExprMember.cpp b/clang/lib/Sema/SemaExprMember.cpp
index 212c5547151..e421349338b 100644
--- a/clang/lib/Sema/SemaExprMember.cpp
+++ b/clang/lib/Sema/SemaExprMember.cpp
@@ -109,9 +109,8 @@ static IMAKind ClassifyImplicitMemberAccess(Sema &SemaRef,
     NamedDecl *D = *I;
 
     if (D->isCXXInstanceMember()) {
-      if (dyn_cast<FieldDecl>(D) || dyn_cast<MSPropertyDecl>(D)
-          || dyn_cast<IndirectFieldDecl>(D))
-        isField = true;
+      isField |= isa<FieldDecl>(D) || isa<MSPropertyDecl>(D) ||
+                 isa<IndirectFieldDecl>(D);
 
       CXXRecordDecl *R = cast<CXXRecordDecl>(D->getDeclContext());
       Classes.insert(R->getCanonicalDecl());
diff --git a/clang/lib/StaticAnalyzer/Checkers/MallocOverflowSecurityChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/MallocOverflowSecurityChecker.cpp
index f38ce77dc6b..e91347999dc 100644
--- a/clang/lib/StaticAnalyzer/Checkers/MallocOverflowSecurityChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/MallocOverflowSecurityChecker.cpp
@@ -142,13 +142,13 @@ private:
           }
         }
       }
-      else if (isa<MemberExpr>(E)) {
+      else if (const auto *ME = dyn_cast<MemberExpr>(E)) {
         // No points-to analysis, just look at the member
-        const Decl * EmeMD = dyn_cast<MemberExpr>(E)->getMemberDecl();
+        const Decl *EmeMD = ME->getMemberDecl();
         while (i != e) {
           --i;
-          if (isa<MemberExpr>(i->variable)) {
-            if (dyn_cast<MemberExpr>(i->variable)->getMemberDecl() == EmeMD)
+          if (const auto *ME_i = dyn_cast<MemberExpr>(i->variable)) {
+            if (ME_i->getMemberDecl() == EmeMD)
               i = toScanFor.erase (i);
           }
         }