[clang] aac5d99 - [NFC][BoundsSafety] Fold a dyn_cast + assert, and sink to first use (#194847)

[via cfe-commits]

Author: Hans Wennborg
Date: 2026-05-07T14:11:32+02:00
New Revision: aac5d990e4fcbe35507d846a5e28d68511ac7435

URL: https://github.com/llvm/llvm-project/commit/aac5d990e4fcbe35507d846a5e28d68511ac7435
DIFF: https://github.com/llvm/llvm-project/commit/aac5d990e4fcbe35507d846a5e28d68511ac7435.diff

LOG: [NFC][BoundsSafety] Fold a dyn_cast + assert, and sink to first use (#194847)

Added: 
    

Modified: 
    clang/lib/Sema/SemaDeclAttr.cpp

Removed: 
    


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diff  --git a/clang/lib/Sema/SemaDeclAttr.cpp b/clang/lib/Sema/SemaDeclAttr.cpp
index 386651fa691e0..55b6cbcbba57d 100644
--- a/clang/lib/Sema/SemaDeclAttr.cpp
+++ b/clang/lib/Sema/SemaDeclAttr.cpp
@@ -6962,9 +6962,6 @@ static void handleNoPFPAttrField(Sema &S, Decl *D, const ParsedAttr &AL) {
 }
 
 static void handleCountedByAttrField(Sema &S, Decl *D, const ParsedAttr &AL) {
-  auto *FD = dyn_cast<FieldDecl>(D);
-  assert(FD);
-
   auto *CountExpr = AL.getArgAsExpr(0);
   if (!CountExpr)
     return;
@@ -6992,6 +6989,7 @@ static void handleCountedByAttrField(Sema &S, Decl *D, const ParsedAttr &AL) {
     llvm_unreachable("unexpected counted_by family attribute");
   }
 
+  FieldDecl *FD = cast<FieldDecl>(D);
   if (S.CheckCountedByAttrOnField(FD, CountExpr, CountInBytes, OrNull))
     return;