[clang] Remove redundant control flow statements (NFC) (#140359)

Author: kazutakahirata

clang/lib/AST/DeclTemplate.cpp

@@ -359,7 +359,6 @@ void RedeclarableTemplateDecl::loadLazySpecializationsImpl(
 
   ExternalSource->LoadExternalSpecializations(this->getCanonicalDecl(),
                                               OnlyPartial);
-  return;
 }
 
 bool RedeclarableTemplateDecl::loadLazySpecializationsImpl(

clang/lib/CodeGen/CGExprAgg.cpp

@@ -548,7 +548,6 @@ static void EmitHLSLScalarFlatCast(CodeGenFunction &CGF, Address DestVal,
     }
     CGF.Builder.CreateStore(Cast, StoreGEPList[I].first);
   }
-  return;
 }
 
 // emit a flat cast where the RHS is an aggregate

clang/lib/CodeGen/CGOpenMPRuntimeGPU.cpp

@@ -1759,7 +1759,6 @@ void CGOpenMPRuntimeGPU::emitReduction(
           CGF.getTarget().getGridValue(),
           C.getLangOpts().OpenMPCUDAReductionBufNum, RTLoc));
   CGF.Builder.restoreIP(AfterIP);
-  return;
 }
 
 const VarDecl *

clang/lib/Driver/ToolChains/CommonArgs.cpp

@@ -2576,8 +2576,6 @@ static void GetSDLFromOffloadArchive(
       InputInfo(&JA, C.getArgs().MakeArgString(OutputLib))));
 
   CC1Args.push_back(DriverArgs.MakeArgString(OutputLib));
-
-  return;
 }
 
 // Wrapper function used by driver for adding SDLs during link phase.

clang/lib/InstallAPI/DylibVerifier.cpp

@@ -750,7 +750,6 @@ void DylibVerifier::visitSymbolInDylib(const Record &R, SymbolContext &SymCtx) {
   // Missing declarations are dropped for ErrorsOnly mode. It is the last
   // remaining mode.
   updateState(Result::Ignore);
-  return;
 }
 
 void DylibVerifier::visitGlobal(const GlobalRecord &R) {

clang/lib/Sema/SemaDeclAttr.cpp

@@ -3982,7 +3982,6 @@ static void handleFormatMatchesAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
 
   S.Diag(AL.getLoc(), diag::err_format_nonliteral)
       << FormatStrExpr->getSourceRange();
-  return;
 }
 
 /// Handle __attribute__((callback(CalleeIdx, PayloadIdx0, ...))) attributes.

clang/lib/Sema/SemaExpr.cpp

@@ -1639,7 +1639,6 @@ static void CheckUnicodeArithmeticConversions(Sema &SemaRef, Expr *LHS,
   SemaRef.Diag(Loc, diag::warn_arith_conv_mixed_unicode_types)
       << LHS->getSourceRange() << RHS->getSourceRange() << ACK << LHSType
       << RHSType;
-  return;
 }
 
 /// UsualArithmeticConversions - Performs various conversions that are common to

clang/lib/Sema/SemaInit.cpp

@@ -9853,7 +9853,6 @@ static void CheckC23ConstexprInitStringLiteral(const StringLiteral *SE,
       return;
     }
   }
-  return;
 }
 
 //===----------------------------------------------------------------------===//

clang/lib/Sema/SemaStmtAttr.cpp

@@ -428,7 +428,6 @@ static void CheckForDuplicateLoopAttrs(Sema &S, ArrayRef<const Attr *> Attrs) {
       S.Diag((*FirstItr)->getLocation(), diag::note_previous_attribute);
     }
   }
-  return;
 }
 
 static Attr *handleMSConstexprAttr(Sema &S, Stmt *St, const ParsedAttr &A,