// If the switch has a condition wrapped by __builtin_unpredictable,
// create metadata that specifies that the switch is unpredictable.
// Don't bother if not optimizing because that metadata would not be used.
- if (CGM.getCodeGenOpts().OptimizationLevel != 0) {
- if (const CallExpr *Call = dyn_cast<CallExpr>(S.getCond())) {
- const Decl *TargetDecl = Call->getCalleeDecl();
- if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(TargetDecl)) {
- if (FD->getBuiltinID() == Builtin::BI__builtin_unpredictable) {
- llvm::MDBuilder MDHelper(getLLVMContext());
- SwitchInsn->setMetadata(llvm::LLVMContext::MD_unpredictable,
- MDHelper.createUnpredictable());
- }
- }
+ auto *Call = dyn_cast<CallExpr>(S.getCond());
+ if (Call && CGM.getCodeGenOpts().OptimizationLevel != 0) {
+ auto *FD = dyn_cast_or_null<FunctionDecl>(Call->getCalleeDecl());
+ if (FD && FD->getBuiltinID() == Builtin::BI__builtin_unpredictable) {
+ llvm::MDBuilder MDHelper(getLLVMContext());
+ SwitchInsn->setMetadata(llvm::LLVMContext::MD_unpredictable,
+ MDHelper.createUnpredictable());
}
}