AOT compiler wamrc doesn't support compiling to arm64 bit

[penneryu]

penner@xxx build % ./wamrc --target=aarch64 -o wasm.aot wasm.wasm
[18:08:57:013 - 1DEF6D000]: warning: a module with WASI apis should be either a command or a reactor
Create AoT compiler with:
target: aarch64v8
target cpu:
target triple: aarch64v8-pc-linux-gnu
cpu features:
opt level: 3
size level: 1
output format: AoT file
LLVM ERROR: Only small, tiny and large code models are allowed on AArch64
zsh: abort ./wamrc --target=aarch64 -o wasm.aot wasm.wasm

Can I modify the source code in aot_llvm_extra2.cpp

[TianlongLiang]

Hi, can you tell me which platform and which commit you are using?
I tried it on my x86 Ubuntu20 with latest commit, it's fine:

./wamrc --target=aarch64 -o test.aot test.wasm
Create AoT compiler with:
  target:        aarch64v8
  target cpu:    
  target triple: aarch64v8-pc-linux-gnu
  cpu features:  
  opt level:     3
  size level:    3
  output format: AoT file
Compile success, file test.aot was generated.

[penneryu]

Hi, can you tell me which platform and which commit you are using? I tried it on my x86 Ubuntu20 with latest commit, it's fine:

./wamrc --target=aarch64 -o test.aot test.wasm
Create AoT compiler with:
  target:        aarch64v8
  target cpu:    
  target triple: aarch64v8-pc-linux-gnu
  cpu features:  
  opt level:     3
  size level:    3
  output format: AoT file
Compile success, file test.aot was generated.

Hi, my platform Apple M1 Max and My commit: 5931aaa
if i choose target to armv8a, it's works fine

./wamrc --target=armv8a -o test.aot test.wasm
[18:54:21:670 - 1DEF6D000]: warning: a module with WASI apis should be either a command or a reactor
Create AoT compiler with:
  target:        armv8a
  target cpu:    
  target triple: armv8a-pc-linux-gnu
  cpu features:  
  opt level:     3
  size level:    1
  output format: AoT file
[18:54:52:119 - 1DEF6D000]: precheck functions use variable amount of stack. (16 - 104)
Compile success, file test.aot was generated.

[penneryu]

#if defined(_WIN32) || defined(_WIN32_) || defined(__APPLE__) \
    || defined(__MACH__)
        if (!option.target_abi) {
            LOG_VERBOSE("Set size level to 1 for Windows or MacOS AOT file");
            option.size_level = 1;
        }
#endif
    }

I found the problem, we should differentiate apple m1 chip

[TianlongLiang]

Good idea, maybe we should differentiate intel-based and arm-based MacOS. For now, you can try adding a command line argument to set manually set the size-level now to see whether it works:

./wamrc --size-level=3 --target=aarch64 -o test.aot test.wasm

[eloparco]

For AOT on M1, usually I compile with wamrc --size-level=0 -o wasm.aot wasm.wasm (as suggested by the LLVM error LLVM ERROR: Only small, tiny and large code models are allowed on AArch64):

Create AoT compiler with:
  target:        arm64
  target cpu:    apple-m1
  target triple: arm64-pc-linux-gnu
  cpu features:  
  opt level:     3
  size level:    0
  output format: AoT file
Compile success, file wasm.aot was generated.

The same is done in CI, where an M1 node (macos-14) is used: https://github.com/bytecodealliance/wasm-micro-runtime/blob/main/.github/workflows/compilation_on_macos.yml#L360