[Driver] Allow -fbasic-block-address-map for AArch64 ELF

Emitting the basic block address map with
`-fbasic-block-sections=labels` is allowed for AArch64 ELF since
7eaf94f. Allow doing so with
`-fbasic-block-address-map`.

Author: dhoekwater

clang/lib/Driver/ToolChains/Clang.cpp

@@ -5958,7 +5958,7 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
 
   if (Arg *A = Args.getLastArg(options::OPT_fbasic_block_address_map,
                                options::OPT_fno_basic_block_address_map)) {
-    if (Triple.isX86() && Triple.isOSBinFormatELF()) {
+    if ((Triple.isX86() || Triple.isAArch64()) && Triple.isOSBinFormatELF()) {
       if (A->getOption().matches(options::OPT_fbasic_block_address_map))
         A->render(Args, CmdArgs);
     } else {

clang/test/Driver/basic-block-address-map.c

@@ -1,4 +1,5 @@
 // RUN: %clang -### -target x86_64 -fbasic-block-address-map %s -S 2>&1 | FileCheck -check-prefix=CHECK-PRESENT %s
+// RUN: %clang -### -target aarch64 -fbasic-block-address-map %s -S 2>&1 | FileCheck -check-prefix=CHECK-PRESENT %s
 // CHECK-PRESENT: -fbasic-block-address-map
 
 // RUN: %clang -### -target x86_64 -fno-basic-block-address-map %s -S 2>&1 | FileCheck %s --check-prefix=CHECK-ABSENT