[Clang][Driver] Allow -fsanitize-coverage with -fsanitize=alloc-token (llvm#169128)

These are not incompatible; allow them to be combined.

Author: melver

clang/lib/Driver/SanitizerArgs.cpp

@@ -55,7 +55,7 @@ static const SanitizerMask SupportsCoverage =
     SanitizerKind::SafeStack | SanitizerKind::ShadowCallStack |
     SanitizerKind::Thread | SanitizerKind::ObjCCast | SanitizerKind::KCFI |
     SanitizerKind::NumericalStability | SanitizerKind::Vptr |
-    SanitizerKind::CFI;
+    SanitizerKind::CFI | SanitizerKind::AllocToken;
 static const SanitizerMask RecoverableByDefault =
     SanitizerKind::Undefined | SanitizerKind::Integer |
     SanitizerKind::ImplicitConversion | SanitizerKind::Nullability |

clang/test/Driver/fsanitize-coverage.c

@@ -17,6 +17,7 @@
 // RUN: %clang --target=x86_64-linux-gnu -fsanitize=dataflow -fsanitize-coverage=func,trace-pc %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANITIZE-COVERAGE-FUNC
 // RUN: %clang --target=x86_64-linux-gnu -fsanitize=thread -fsanitize-coverage=func,trace-pc %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANITIZE-COVERAGE-FUNC
 // RUN: %clang --target=x86_64-linux-gnu -fsanitize=kcfi -fsanitize-coverage=func,trace-pc %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANITIZE-COVERAGE-FUNC
+// RUN: %clang --target=x86_64-linux-gnu -fsanitize=alloc-token -fsanitize-coverage=func,trace-pc %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANITIZE-COVERAGE-FUNC
 // RUN: %clang --target=x86_64-linux-gnu -fsanitize=cfi -fsanitize-coverage=func,trace-pc -flto -fvisibility=default -fno-sanitize-ignorelist -resource-dir=/dev/null %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANITIZE-COVERAGE-FUNC
 // RUN: %clang --target=%itanium_abi_triple -fsanitize=float-divide-by-zero -fsanitize-coverage=func,trace-pc %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANITIZE-COVERAGE-FUNC
 // RUN: %clang --target=x86_64-linux-gnu                     -fsanitize-coverage=func,trace-pc %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANITIZE-COVERAGE-FUNC