The auto generated gn config file:

```
$ cat out/arm.debug/args.gn
is_component_build = true
is_debug = true
symbol_level = 2
target_cpu = "x86"
v8_target_cpu = "arm"
use_goma = false
v8_enable_backtrace = true
v8_enable_fast_mksnapshot = true
v8_enable_slow_dchecks = true
v8_optimized_debug = false
```

On Friday, August 12, 2022 at 9:51:17 PM UTC+8 Feng Yu wrote:

> I  am migrating tests from cctest/ to unittests/. The assembler test is 
> arch-specific, I need to run tests for loong, riscv, arm & mips arch. see 
> https://chromium-review.googlesource.com/c/v8/v8/+/3827132 for my work in 
> progress.
>
> On Friday, August 12, 2022 at 9:45:06 PM UTC+8 Feng Yu wrote:
>
>> I am trying to run arm test `test-assembler-arm.cc`, but I fail to build 
>> arm.debug in my m1 MacBook. 
>>
>> *My machine info*
>>
>> ```
>> $ uname -a
>> Darwin fengs-MacBook-Pro.local 21.5.0 Darwin Kernel Version 21.5.0: Tue 
>> Apr 26 21:08:37 PDT 2022; root:xnu-8020.121.3~4/RELEASE_ARM64_T6000 x86_64
>> ```
>>  
>> *Console output*
>>
>> ```
>> $ gm arm.debug
>> # autoninja -C out/arm.debug d8
>> ninja: Entering directory `out/arm.debug'
>> [1/1467] CXX obj/v8_heap_base/push_registers_asm.o
>> FAILED: obj/v8_heap_base/push_registers_asm.o 
>> ../../third_party/llvm-build/Release+Asserts/bin/clang++ -MMD -MF 
>> obj/v8_heap_base/push_registers_asm.o.d -D__STDC_CONSTANT_MACROS 
>> -D__STDC_FORMAT_MACROS -D_LIBCPP_HAS_NO_ALIGNED_ALLOCATION 
>> -DCR_XCODE_VERSION=1341 
>> -DCR_CLANG_REVISION=\"llvmorg-15-init-9576-g75f9e83a-2\" -DCOMPONENT_BUILD 
>> -D_LIBCPP_ABI_UNSTABLE -D_LIBCPP_ABI_VERSION=Cr -D_LIBCPP_ENABLE_NODISCARD 
>> -D_LIBCPP_DEBUG=0 
>> -DCR_LIBCXX_REVISION=79a2e924d96e2fc1e4b937c42efd08898fa472d7 
>> -D__ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORES=0 -D_DEBUG 
>> -DDYNAMIC_ANNOTATIONS_ENABLED=1 -DCPPGC_VERIFY_HEAP -DENABLE_DISASSEMBLER 
>> -DV8_TYPED_ARRAY_MAX_SIZE_IN_HEAP=64 -DOBJECT_PRINT -DVERIFY_HEAP 
>> -DV8_TRACE_MAPS -DV8_ENABLE_ALLOCATION_TIMEOUT -DV8_ENABLE_FORCE_SLOW_PATH 
>> -DV8_ENABLE_DOUBLE_CONST_STORE_CHECK -DV8_INTL_SUPPORT 
>> -DENABLE_HANDLE_ZAPPING -DV8_CODE_COMMENTS -DV8_ENABLE_DEBUG_CODE 
>> -DV8_ENABLE_HEAP_SNAPSHOT_VERIFY -DV8_SNAPSHOT_NATIVE_CODE_COUNTERS 
>> -DV8_USE_EXTERNAL_STARTUP_DATA -DV8_ATOMIC_OBJECT_FIELD_WRITES 
>> -DV8_ENABLE_LAZY_SOURCE_POSITIONS -DV8_SHARED_RO_HEAP 
>> -DV8_WIN64_UNWINDING_INFO -DV8_ENABLE_REGEXP_INTERPRETER_THREADED_DISPATCH 
>> -DV8_ENABLE_SYSTEM_INSTRUMENTATION -DV8_ENABLE_WEBASSEMBLY 
>> -DV8_ALLOCATION_FOLDING -DV8_ALLOCATION_SITE_TRACKING 
>> -DV8_ADVANCED_BIGINT_ALGORITHMS -DV8_ENABLE_CHECKS 
>> -DV8_DEPRECATION_WARNINGS -DV8_IMMINENT_DEPRECATION_WARNINGS 
>> -DV8_TARGET_ARCH_ARM -DCAN_USE_ARMV7_INSTRUCTIONS 
>> -DCAN_USE_VFP3_INSTRUCTIONS -DCAN_USE_VFP32DREGS -DCAN_USE_NEON 
>> -DUSE_EABI_HARDFLOAT=1 -DV8_HAVE_TARGET_OS -DV8_TARGET_OS_MACOS -DDEBUG 
>> -DENABLE_SLOW_DCHECKS -DV8_RUNTIME_CALL_STATS -DBUILDING_V8_SHARED 
>> -DUSING_V8_BASE_SHARED -I../.. -Igen -I../../buildtools/third_party/libc++ 
>> -I../../include -Igen/include -Wall -Werror -Wextra -Wimplicit-fallthrough 
>> -Wunreachable-code-aggressive -Wthread-safety -Wunguarded-availability 
>> -Wno-missing-field-initializers -Wno-unused-parameter -Wloop-analysis 
>> -Wno-unneeded-internal-declaration -Wenum-compare-conditional -Wno-psabi 
>> -Wno-ignored-pragma-optimize -Wno-unqualified-std-cast-call -Xclang 
>> -no-opaque-pointers -Wshadow -fno-delete-null-pointer-checks -fno-ident 
>> -fno-strict-aliasing -fstack-protector-strong -fcolor-diagnostics 
>> -fmerge-all-constants 
>> -fcrash-diagnostics-dir=../../tools/clang/crashreports -mllvm 
>> -instcombine-lower-dbg-declare=0 -ffp-contract=off 
>> -fcomplete-member-pointers -arch i386 -Wno-builtin-macro-redefined 
>> -D__DATE__= -D__TIME__= -D__TIMESTAMP__= -ffile-compilation-dir=. 
>> -no-canonical-prefixes -ftrivial-auto-var-init=pattern 
>> -fno-omit-frame-pointer -gdwarf-4 -g2 -gdwarf-aranges -Xclang 
>> -debug-info-kind=limited -isysroot 
>> ../../../../../../../Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.3.sdk
>>  
>> -mmacosx-version-min=10.11.0 -Wheader-hygiene -Wstring-conversion 
>> -Wtautological-overlap-compare -Wmissing-field-initializers 
>> -Wctad-maybe-unsupported -Wno-shadow -Wunreachable-code -O0 
>> -fvisibility=default -Wexit-time-destructors -Wno-undefined-bool-conversion 
>> -Wno-tautological-undefined-compare -std=c++17 -Wno-trigraphs 
>> -fno-aligned-new -fno-exceptions -fno-rtti -nostdinc++ 
>> -isystem../../buildtools/third_party/libc++/trunk/include 
>> -isystem../../buildtools/third_party/libc++abi/trunk/include -c 
>> ../../src/heap/base/asm/ia32/push_registers_asm.cc -o 
>> obj/v8_heap_base/push_registers_asm.o
>> <inline asm>:2:1: error: unknown directive
>> .type PushAllRegistersAndIterateStack, %function   
>> ^
>> <inline asm>:3:1: error: unknown directive
>> .hidden PushAllRegistersAndIterateStack            
>> ^
>> 2 errors generated.
>> [12/1467] CXX obj/v8_libbase/emulated-virtual-address-subspace.o
>> ninja: build stopped: subcommand failed.
>> Error! - V8 compilation finished with errors.
>> ```
>>
>

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