[Clang][Sema][NFC]Use isa_and_nonnull to simplify the code and avoid build warning

[ZERO-N]

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@llvm/pr-subscribers-clang

Author: None (ZERO-N)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/84181.diff

1 Files Affected:

• (modified) clang/lib/Sema/SemaExceptionSpec.cpp (+3-2)

diff --git a/clang/lib/Sema/SemaExceptionSpec.cpp b/clang/lib/Sema/SemaExceptionSpec.cpp
index 3563b4f683f079..0ce00dd0f847ec 100644
--- a/clang/lib/Sema/SemaExceptionSpec.cpp
+++ b/clang/lib/Sema/SemaExceptionSpec.cpp
@@ -21,6 +21,7 @@
 #include "clang/Basic/SourceManager.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallString.h"
+#include "llvm/Support/Casting.h"
 #include <optional>
 
 namespace clang {
@@ -1017,13 +1018,13 @@ CanThrowResult Sema::canCalleeThrow(Sema &S, const Expr *E, const Decl *D,
                                     SourceLocation Loc) {
   // As an extension, we assume that __attribute__((nothrow)) functions don't
   // throw.
-  if (D && isa<FunctionDecl>(D) && D->hasAttr<NoThrowAttr>())
+  if (isa_and_nonnull<FunctionDecl>(D) && D->hasAttr<NoThrowAttr>())
     return CT_Cannot;
 
   QualType T;
 
   // In C++1z, just look at the function type of the callee.
-  if (S.getLangOpts().CPlusPlus17 && E && isa<CallExpr>(E)) {
+  if (S.getLangOpts().CPlusPlus17 && isa_and_nonnull<CallExpr>(E)) {
     E = cast<CallExpr>(E)->getCallee();
     T = E->getType();
     if (T->isSpecificPlaceholderType(BuiltinType::BoundMember)) {

[github-actions]

✅ With the latest revision this PR passed the C/C++ code formatter.

[yronglin]

LGTM. Do you need me to merge that for you?

[ZERO-N]

@yronglin much thanks

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