[Driver] Support -fsanitize=shadow-call-stack and cfi-icall on aarch64_be

D80647 did not fix https://bugs.llvm.org/show_bug.cgi?id=46076
This is the fix.

(cherry picked from commit b9c6871)

Author: MaskRay

clang/lib/Driver/ToolChain.cpp

@@ -954,15 +954,12 @@ SanitizerMask ToolChain::getSupportedSanitizers() const {
   if (getTriple().getArch() == llvm::Triple::x86 ||
       getTriple().getArch() == llvm::Triple::x86_64 ||
       getTriple().getArch() == llvm::Triple::arm ||
-      getTriple().getArch() == llvm::Triple::aarch64 ||
       getTriple().getArch() == llvm::Triple::wasm32 ||
-      getTriple().getArch() == llvm::Triple::wasm64)
+      getTriple().getArch() == llvm::Triple::wasm64 || getTriple().isAArch64())
     Res |= SanitizerKind::CFIICall;
-  if (getTriple().getArch() == llvm::Triple::x86_64 ||
-      getTriple().getArch() == llvm::Triple::aarch64)
+  if (getTriple().getArch() == llvm::Triple::x86_64 || getTriple().isAArch64())
     Res |= SanitizerKind::ShadowCallStack;
-  if (getTriple().getArch() == llvm::Triple::aarch64 ||
-      getTriple().getArch() == llvm::Triple::aarch64_be)
+  if (getTriple().isAArch64())
     Res |= SanitizerKind::MemTag;
   return Res;
 }

clang/test/Driver/fsanitize.c

@@ -577,6 +577,7 @@
 // RUN: %clang -target aarch64-linux-gnu -fvisibility=hidden -fsanitize=cfi -flto -c %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI
 // RUN: %clang -target arm-linux-android -fvisibility=hidden -fsanitize=cfi -flto -c %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI
 // RUN: %clang -target aarch64-linux-android -fvisibility=hidden -fsanitize=cfi -flto -c %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI
+// RUN: %clang -target aarch64_be -fvisibility=hidden -fsanitize=cfi -flto -c %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI
 // CHECK-CFI: -emit-llvm-bc{{.*}}-fsanitize=cfi-derived-cast,cfi-icall,cfi-mfcall,cfi-unrelated-cast,cfi-nvcall,cfi-vcall
 // CHECK-CFI-NOMFCALL: -emit-llvm-bc{{.*}}-fsanitize=cfi-derived-cast,cfi-icall,cfi-unrelated-cast,cfi-nvcall,cfi-vcall
 // CHECK-CFI-DCAST: -emit-llvm-bc{{.*}}-fsanitize=cfi-derived-cast
@@ -809,8 +810,8 @@
 // CHECK-SCS-MINIMAL: "-fsanitize=shadow-call-stack"
 // CHECK-SCS-MINIMAL: "-fsanitize-minimal-runtime"
 
-// RUN: %clang -target aarch64 -fsanitize=shadow-call-stack %s -### 2>&1 | FileCheck %s --check-prefix=AARCH64-SCS
-// RUN: %clang -target aarch64_be -fsanitize=shadow-call-stack %s -### 2>&1 | FileCheck %s --check-prefix=AARCH64-SCS
+// RUN: %clang -target aarch64 -fsanitize=shadow-call-stack -ffixed-x18 %s -### 2>&1 | FileCheck %s --check-prefix=AARCH64-SCS
+// RUN: %clang -target aarch64_be -fsanitize=shadow-call-stack -ffixed-x18 %s -### 2>&1 | FileCheck %s --check-prefix=AARCH64-SCS
 // AARCH64-SCS: "-fsanitize=shadow-call-stack"
 
 // RUN: %clang -target aarch64-linux-gnu -fsanitize=scudo %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SCUDO