[Clang driver] Diagnose -maix-shared-lib-tls-model-opt on wrong targets (#130865)

Author: hubert-reinterpretcast

clang/lib/Driver/ToolChains/Arch/PPC.cpp

@@ -72,6 +72,11 @@ void ppc::getPPCTargetFeatures(const Driver &D, const llvm::Triple &Triple,
       D.Diag(diag::err_drv_argument_only_allowed_with)
           << "-maix-small-local-[exec|dynamic]-tls" << "-fdata-sections";
   }
+
+  if (Args.hasArg(options::OPT_maix_shared_lib_tls_model_opt) &&
+      !(Triple.isOSAIX() && Triple.isArch64Bit()))
+    D.Diag(diag::err_opt_not_valid_on_target)
+        << "-maix-shared-lib-tls-model-opt";
 }
 
 ppc::ReadGOTPtrMode ppc::getPPCReadGOTPtrMode(const Driver &D, const llvm::Triple &Triple,

clang/test/Driver/aix-shared-lib-tls-model-opt.c

@@ -6,12 +6,11 @@
 // RUN: %clang -target powerpc64-unknown-aix -maix-shared-lib-tls-model-opt -S -emit-llvm \
 // RUN:    %s -o - | FileCheck %s --check-prefixes=CHECK-AIX,CHECK-AIX-ON
 
-// FIXME: Clang driver diagnostic not implemented.
-// RUN: true || not %clang -target powerpc-unknown-aix -maix-shared-lib-tls-model-opt \
+// RUN: not %clang -target powerpc-unknown-aix -maix-shared-lib-tls-model-opt \
 // RUN:    -fsyntax-only %s 2>&1 | FileCheck --check-prefix=CHECK-UNSUPPORTED-TARGET %s
-// RUN: true || not %clang -target powerpc64le-unknown-linux-gnu -maix-shared-lib-tls-model-opt \
+// RUN: not %clang -target powerpc64le-unknown-linux-gnu -maix-shared-lib-tls-model-opt \
 // RUN:    -fsyntax-only %s 2>&1 | FileCheck --check-prefix=CHECK-UNSUPPORTED-TARGET %s
-// RUN: true || not %clang -target powerpc64-unknown-linux-gnu -maix-shared-lib-tls-model-opt \
+// RUN: not %clang -target powerpc64-unknown-linux-gnu -maix-shared-lib-tls-model-opt \
 // RUN:    -fsyntax-only %s 2>&1 | FileCheck --check-prefix=CHECK-UNSUPPORTED-TARGET %s
 
 int test(void) {