[Sparc] Create an error when __builtin_longjmp is used

Support for builtin setjmp/longjmp was removed by https://reviews.llvm.org/D51487. An
error should be created when compiling C code using __builtin_setjmp or __builtin_longjmp.

Reviewed By: dcederman

Differential Revision: https://reviews.llvm.org/D108901

(cherry picked from commit eeb4266)

Author: xtkoba

clang/lib/Basic/Targets/Sparc.h

@@ -50,8 +50,6 @@ class LLVM_LIBRARY_VISIBILITY SparcTargetInfo : public TargetInfo {
 
   bool hasFeature(StringRef Feature) const override;
 
-  bool hasSjLjLowering() const override { return true; }
-
   ArrayRef<Builtin::Info> getTargetBuiltins() const override {
     // FIXME: Implement!
     return None;
@@ -180,7 +178,6 @@ class LLVM_LIBRARY_VISIBILITY SparcV8TargetInfo : public SparcTargetInfo {
   void getTargetDefines(const LangOptions &Opts,
                         MacroBuilder &Builder) const override;
 
-  bool hasSjLjLowering() const override { return true; }
   bool hasExtIntType() const override { return true; }
 };
 

clang/test/Sema/builtin-longjmp.c

@@ -3,12 +3,12 @@
 // RUN: %clang_cc1 -triple x86_64-windows -emit-llvm < %s| FileCheck %s
 // RUN: %clang_cc1 -triple powerpc-unknown-unknown -emit-llvm < %s| FileCheck %s
 // RUN: %clang_cc1 -triple powerpc64-unknown-unknown -emit-llvm < %s| FileCheck %s
-// RUN: %clang_cc1 -triple sparc-eabi-unknown -emit-llvm < %s | FileCheck %s
 // RUN: %clang_cc1 -triple ve-unknown-unknown -emit-llvm < %s | FileCheck %s
 
 // RUN: %clang_cc1 -triple aarch64-unknown-unknown -emit-llvm-only -verify %s
 // RUN: %clang_cc1 -triple mips-unknown-unknown -emit-llvm-only -verify %s
 // RUN: %clang_cc1 -triple mips64-unknown-unknown -emit-llvm-only -verify %s
+// RUN: %clang_cc1 -triple sparc-eabi-unknown -emit-llvm-only -verify %s
 
 // Check that __builtin_longjmp and __builtin_setjmp are lowered into
 // IR intrinsics on those architectures that can handle them.