Add tests. Fix unsupported target errors.

Author: Sterling-Augustine

clang/lib/Driver/ToolChains/Clang.cpp

@@ -2618,7 +2618,13 @@ static void CollectArgsForIntegratedAssembler(Compilation &C,
                                   DwarfVersion, llvm::DebuggerKind::Default);
         }
       } else if (Value == "--gsframe") {
-        CmdArgs.push_back("--gsframe");
+        if (Triple.isOSBinFormatELF() && Triple.isX86()) {
+          CmdArgs.push_back("--gsframe");
+        } else {
+          D.Diag(diag::err_drv_unsupported_opt_for_target)
+              << Value << D.getTargetTriple();
+          break;
+        }
       } else if (Value.starts_with("-mcpu") || Value.starts_with("-mfpu") ||
                  Value.starts_with("-mhwdiv") || Value.starts_with("-march")) {
         // Do nothing, we'll validate it later.

clang/test/Driver/sframe.c

@@ -0,0 +1,15 @@
+// RUN: %clang -### -c --target=x86_64 -Wa,--gsframe %s -Werror 2>&1 | FileCheck %s
+// CHECK:  "-cc1" {{.*}}"--gsframe"
+
+// RUN: %clang -### -c --target=x86_64 %s 2>&1 | FileCheck %s --check-prefix=NO
+// NO:     "-cc1"
+
+// RUN: %clang -### -c --target=x86_64 -Werror -Wa,--gsframe -x assembler %s -Werror 2>&1 | FileCheck %s --check-prefix=ASM
+// ASM:    "-cc1as" {{.*}}"--gsframe"
+
+// RUN: not %clang -### -c --target=mips64 -Wa,--gsframe %s 2>&1 | FileCheck %s --check-prefix=NOTARGETC
+// NOTARGETC: error: unsupported option '--gsframe' for target '{{.*}}'
+
+// RUN: not %clang -### -c --target=mips64 -Wa,--gsframe -x assembler %s 2>&1 | FileCheck %s --check-prefix=NOTARGETASM
+// NOTARGETASM: error: unsupported option '--gsframe' for target '{{.*}}'
+

clang/test/Misc/cc1as-sframe.s

@@ -0,0 +1,8 @@
+// REQUIRES: x86-registered-target
+// RUN: %clang -cc1as -triple x86_64 %s -filetype obj --gsframe -o %t.o
+// RUN: llvm-readelf -S %t.o | FileCheck %s
+
+// CHECK: .sframe
+.cfi_startproc        
+        call foo
+.cfi_endproc