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README.md

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building

megcc depends on llvm-project and megbrain, now llvm-project and megbrain are integrated by submodule, and static linked into megcc

  • install cmake ninja 
    $ python3 -m pip install cmake
$ cmake --version
..
$ sudo apt install ninja-build
  • update third-party submodule 
    $ cd megcc
$ ./third_party/prepare.sh
  • build megcc 
    $ cd megcc/compiler
$ mkdir build
$ cd build
$ cmake .. -G Ninja
$ ninja

after build, the compiler tools are stored in build/tools/...

kernel test

Ninja is recommended(make is not tested ...) X86 test

$ mkdir -p build_x86
$ cd build_x86
$ cmake ../test/kernel  -G Ninja
$ ninja
$ ./megcc_test_run

ARM Android test

$ mkdir -p build_arm
$ cd build_arm
$ cmake ../test/kernel -DCMAKE_TOOLCHAIN_FILE="$NDK_ROOT/build/cmake/android.toolchain.cmake"  -DANDROID_NDK="$NDK_ROOT" -DANDROID_ABI=arm64-v8a  -DANDROID_NATIVE_API_LEVEL=21  -G Ninja -DCMAKE_BUILD_TYPE=Debug
$ ninja
$ copy2phone megcc_test_run
$ run_phone ./megcc_test_run

set environment export extra_gtest_args="--gtest_filter=AARCH64.ConvBiasNCHWNCHW44" will build specific kernel to save time.

regression test

ninja megcc-test or make megcc-test

ensure lit was already installed:

$ pip3 install --user lit

and add option -DLLVM_EXTERNAL_LIT=/path/to/lit when cmake build

ycm support

if you are a vimer, you can use ycm, you just need

  • cd compiler
  • mkdir build
  • building the whole compiler