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8d88471c46
LLVM PGO (Profile-Guided Optimization) allows the compiler to better optimize code
for how it actually runs. This PR implements the AOT static PGO, and is tested on
Linux x86-64 and x86-32. The basic steps are:
1. Use `wamrc --enable-llvm-pgo -o <aot_file_of_pgo> <wasm_file>`
to generate an instrumented aot file.
2. Compile iwasm with `cmake -DWAMR_BUILD_STATIC_PGO=1` and run
`iwasm --gen-prof-file=<raw_profile_file> <aot_file_of_pgo>`
to generate the raw profile file.
3. Run `llvm-profdata merge -output=<profile_file> <raw_profile_file>`
to merge the raw profile file into the profile file.
4. Run `wamrc --use-prof-file=<profile_file> -o <aot_file> <wasm_file>`
to generate the optimized aot file.
5. Run the optimized aot_file: `iwasm <aot_file>`.
The test scripts are also added for each benchmark, run `test_pgo.sh` under
each benchmark's folder to test the AOT static pgo.
51 lines
1.4 KiB
Bash
Executable File
51 lines
1.4 KiB
Bash
Executable File
#!/bin/sh
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# Copyright (C) 2019 Intel Corporation. All rights reserved.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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PLATFORM=$(uname -s | tr A-Z a-z)
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IWASM="../../../product-mini/platforms/${PLATFORM}/build/iwasm"
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WAMRC="../../../wamr-compiler/build/wamrc"
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if [ ! -e "coremark.wasm" ]; then
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echo "coremark.wasm doesn't exist, please run build.sh first"
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exit
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fi
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echo ""
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echo "Compile coremark.wasm to coremark.aot .."
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${WAMRC} -o coremark.aot coremark.wasm
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echo ""
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echo "Compile coremark.wasm to coremark_pgo.aot .."
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${WAMRC} --enable-llvm-pgo -o coremark_pgo.aot coremark.wasm
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echo ""
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echo "Run coremark_pgo.aot to generate the raw profile data .."
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${IWASM} --gen-prof-file=coremark.profraw coremark_pgo.aot
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echo ""
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echo "Merge the raw profile data to coremark.profdata .."
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rm -f coremark.profdata && llvm-profdata merge -output=coremark.profdata coremark.profraw
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echo ""
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echo "Compile coremark.wasm to coremark_opt.aot with the profile data .."
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${WAMRC} --use-prof-file=coremark.profdata -o coremark_opt.aot coremark.wasm
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echo ""
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echo "Run the coremark native"
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./coremark.exe
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echo ""
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echo "Run the original aot file coremark.aot"
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${IWASM} coremark.aot
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echo ""
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echo "Run the PGO optimized aot file coremark_opt.aot"
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${IWASM} coremark_opt.aot
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# Show the profile data:
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# llvm-profdata show --all-functions --detailed-summary --binary-ids --counts \
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# --hot-func-list --memop-sizes --show-prof-sym-list coremark.profraw
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