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76be848ec3
wasm-micro-runtime/wamr-compiler
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Wenyong Huang 76be848ec3
Implement the segue optimization for LLVM AOT/JIT (#2230) 
Segue is an optimization technology which uses x86 segment register to store
the WebAssembly linear memory base address, so as to remove most of the cost
of SFI (Software-based Fault Isolation) base addition and free up a general
purpose register, by this way it may:
- Improve the performance of JIT/AOT
- Reduce the footprint of JIT/AOT, the JIT/AOT code generated is smaller
- Reduce the compilation time of JIT/AOT

This PR uses the x86-64 GS segment register to apply the optimization, currently
it supports linux and linux-sgx platforms on x86-64 target. By default it is disabled,
developer can use the option below to enable it for wamrc and iwasm(with LLVM
JIT enabled):
```bash
wamrc --enable-segue=[<flags>] -o output_file wasm_file
iwasm --enable-segue=[<flags>] wasm_file [args...]
```
`flags` can be:
    i32.load, i64.load, f32.load, f64.load, v128.load,
    i32.store, i64.store, f32.store, f64.store, v128.store
Use comma to separate them, e.g. `--enable-segue=i32.load,i64.store`,
and `--enable-segue` means all flags are added.

Acknowledgement:
Many thanks to Intel Labs, UC San Diego and UT Austin teams for introducing this
technology and the great support and guidance!

Signed-off-by: Wenyong Huang <wenyong.huang@intel.com>
Co-authored-by: Vahldiek-oberwagner, Anjo Lucas <anjo.lucas.vahldiek-oberwagner@intel.com>
2023-05-26 10:13:33 +08:00
..
build_llvm_arc.sh Fix several issues in CI binary releasing (#2064) 2023-03-26 12:19:45 +08:00
build_llvm_xtensa.sh Fix several issues in CI binary releasing (#2064) 2023-03-26 12:19:45 +08:00
build_llvm.py Fix Windows/MSVC build issues (#1498) 2022-09-17 21:16:38 +08:00
build_llvm.sh Fix several issues in CI binary releasing (#2064) 2023-03-26 12:19:45 +08:00
CMakeLists.txt Update cmake files and wamr-test-suites to support collect code coverage (#1992) 2023-02-28 17:38:18 +08:00
main.c Implement the segue optimization for LLVM AOT/JIT (#2230) 2023-05-26 10:13:33 +08:00
README.md Update document for iwasm/wamrc dependent packages (#2183) 2023-05-08 16:30:56 +08:00

README.md

Build wamrc AOT compiler

Both wasm binary file and AOT file are supported by iwasm. The wamrc AOT compiler is to compile wasm binary file to AOT file which can also be run by iwasm. You can execute following commands to build wamrc compiler:

For Linux(Ubuntu 20.04 as an example):

First, make sure necessary dependency are installed:

sudo apt-get install git build-essential cmake g++-multilib libgcc-9-dev lib32gcc-9-dev ccache 

cd wamr-compiler
./build_llvm.sh (or "./build_llvm_xtensa.sh" to support xtensa target)
mkdir build && cd build
cmake .. (or "cmake .. -DWAMR_BUILD_PLATFORM=darwin" for MacOS)
make
# wamrc is generated under current directory

For Windows：

cd wamr-compiler
python build_llvm.py
mkdir build && cd build
cmake ..
cmake --build . --config Release
# wamrc.exe is generated under .\Release directory