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Implement the segue optimization for LLVM AOT/JIT (#2230)

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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>
This commit is contained in:
Wenyong Huang
2023-05-26 10:13:33 +08:00
committed by GitHub
parent 27239723a9
commit 76be848ec3
42 changed files with 1864 additions and 123 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
tests/benchmarks/coremark/build.sh
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@ -3,6 +3,8 @@
# Copyright (C) 2019 Intel Corporation. All rights reserved.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
PLATFORM=$(uname -s | tr A-Z a-z)
WAMRC="../../../wamr-compiler/build/wamrc"
if [ ! -d coremark ]; then
@ -32,4 +34,9 @@ cd ..
echo "Compile coremark.wasm to coremark.aot .."
${WAMRC} -o coremark.aot coremark.wasm
if [[ ${PLATFORM} == "linux" ]]; then
echo "Compile coremark.wasm to coremark_segue.aot .."
${WAMRC} --enable-segue -o coremark_segue.aot coremark.wasm
fi
echo "Done"

13
tests/benchmarks/coremark/run.sh
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@ -3,14 +3,21 @@
# Copyright (C) 2019 Intel Corporation. All rights reserved.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
IWASM="../../../product-mini/platforms/linux/build/iwasm"
PLATFORM=$(uname -s | tr A-Z a-z)
IWASM="../../../product-mini/platforms/${PLATFORM}/build/iwasm"
WAMRC="../../../wamr-compiler/build/wamrc"
echo "Run coremark with native .."
./coremark.exe
echo "Run coremark with iwasm mode .."
echo "Run coremark with iwasm aot mode .."
${IWASM} coremark.aot
echo "Run coremakr with iwasm interpreter .."
if [[ ${PLATFORM} == "linux" ]]; then
echo "Run coremark with iwasm aot-segue mode .."
${IWASM} coremark_segue.aot
fi
echo "Run coremark with iwasm interpreter mode .."
${IWASM} coremark.wasm