Remove redundant casts. NFC

So I wrote a clang-tidy check to lint out redundant `isa`, `cast`, and
`dyn_cast`s for fun. This is a portion of what it found for clang; I
plan to do similar cleanups in LLVM and other subprojects when I find
time.

Because of the volume of changes, I explicitly avoided making any change
that wasn't highly local and obviously correct to me (e.g. we still have
a number of foo(cast<Bar>(baz)) that I didn't touch, since overloading
is a thing and the cast<Bar> did actually change the type -- just up the
class hierarchy).

I also tried to leave the types we were cast<>ing to somewhere nearby,
in cases where it wasn't locally obvious what we were dealing with
before.

llvm-svn: 326416

1 files changed, 1 insertions, 1 deletions

diff --git a/clang/lib/AST/MicrosoftMangle.cpp b/clang/lib/AST/MicrosoftMangle.cpp
index a6ff13d9ddf..068254abd19 100644
--- a/clang/lib/AST/MicrosoftMangle.cpp
+++ b/clang/lib/AST/MicrosoftMangle.cpp
@@ -1368,7 +1368,7 @@ void MicrosoftCXXNameMangler::mangleTemplateArg(const TemplateDecl *TD,
     break;
   }
   case TemplateArgument::Declaration: {
-    const NamedDecl *ND = cast<NamedDecl>(TA.getAsDecl());
+    const NamedDecl *ND = TA.getAsDecl();
     if (isa<FieldDecl>(ND) || isa<IndirectFieldDecl>(ND)) {
       mangleMemberDataPointer(
           cast<CXXRecordDecl>(ND->getDeclContext())->getMostRecentDecl(),