Implement AOT static PGO (#2243)

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.
This commit is contained in:
Wenyong Huang
2023-06-05 09:17:39 +08:00
committed by GitHub
parent f1e9029ebc
commit 8d88471c46
29 changed files with 2000 additions and 53 deletions

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# WAMR test benchmarks
This folder contains test benchmarks for wamr.
## Build and Run
Refer to the `README.md` under each folder for how to build and run the benchmark.
## Install `llvm-profdata`
The tool `llvm-profdata` is used when running the `test_pgo.sh` script under the benchmark folder. There are two ways to install it:
1. Refer to https://apt.llvm.org/, e.g. in Ubuntu 20.04, add lines below to /etc/apt/source.list
```bash
deb http://apt.llvm.org/focal/ llvm-toolchain-focal main
deb-src http://apt.llvm.org/focal/ llvm-toolchain-focal main
# 15
deb http://apt.llvm.org/focal/ llvm-toolchain-focal-15 main
deb-src http://apt.llvm.org/focal/ llvm-toolchain-focal-15 main
```
Then run `sudo apt update`, `sudo apt install llvm`. And after installing:
```bash
cd /usr/bin
sudo ln -s llvm-profdata-15 llvm-profdata
```
2. Build manually
```bash
git clone --depth 1 --branch release/15.x https://github.com/llvm/llvm-project.git
cd llvm-project
mkdir build && cd build
cmake ../llvm \
-DCMAKE_BUILD_TYPE:STRING="Release" \
-DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
-DLLVM_APPEND_VC_REV:BOOL=ON \
-DLLVM_BUILD_EXAMPLES:BOOL=OFF \
-DLLVM_BUILD_LLVM_DYLIB:BOOL=OFF \
-DLLVM_BUILD_TESTS:BOOL=OFF \
-DLLVM_CCACHE_BUILD:BOOL=ON \
-DLLVM_ENABLE_BINDINGS:BOOL=OFF \
-DLLVM_ENABLE_IDE:BOOL=OFF \
-DLLVM_ENABLE_LIBEDIT=OFF \
-DLLVM_ENABLE_TERMINFO:BOOL=OFF \
-DLLVM_ENABLE_ZLIB:BOOL=ON \
-DLLVM_INCLUDE_BENCHMARKS:BOOL=OFF \
-DLLVM_INCLUDE_DOCS:BOOL=OFF \
-DLLVM_INCLUDE_EXAMPLES:BOOL=OFF \
-DLLVM_INCLUDE_UTILS:BOOL=OFF \
-DLLVM_INCLUDE_TESTS:BOOL=OFF \
-DLLVM_BUILD_TESTS:BOOL=OFF \
-DLLVM_OPTIMIZED_TABLEGEN:BOOL=ON \
-DLLVM_ENABLE_LIBXML2:BOOL=OFF \
-DLLVM_TARGETS_TO_BUILD:STRING="X86" \
-DLLVM_INCLUDE_TOOLS:BOOL=ON \
-G'Ninja'
ninja -j 8
# tool `llvm-profdata` is generated under this folder.
```

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@ -17,3 +17,5 @@ And then run `./build.sh` to build the source code, file `coremark.exe`, `corema
# Running
Run `./run.sh` to test the benchmark, the native mode, iwasm aot mode and iwasm interpreter mode will be tested respectively.
Run `./test_pgo.sh` to test the benchmark with AOT static PGO (Profile-Guided Optimization) enabled, please refer [here](../README.md#install-llvm-profdata) to install tool `llvm-profdata` and build `iwasm` with `cmake -DWAMR_BUILD_STATIC_PGO=1`.

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#!/bin/sh
# Copyright (C) 2019 Intel Corporation. All rights reserved.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
PLATFORM=$(uname -s | tr A-Z a-z)
IWASM="../../../product-mini/platforms/${PLATFORM}/build/iwasm"
WAMRC="../../../wamr-compiler/build/wamrc"
if [ ! -e "coremark.wasm" ]; then
echo "coremark.wasm doesn't exist, please run build.sh first"
exit
fi
echo ""
echo "Compile coremark.wasm to coremark.aot .."
${WAMRC} -o coremark.aot coremark.wasm
echo ""
echo "Compile coremark.wasm to coremark_pgo.aot .."
${WAMRC} --enable-llvm-pgo -o coremark_pgo.aot coremark.wasm
echo ""
echo "Run coremark_pgo.aot to generate the raw profile data .."
${IWASM} --gen-prof-file=coremark.profraw coremark_pgo.aot
echo ""
echo "Merge the raw profile data to coremark.profdata .."
rm -f coremark.profdata && llvm-profdata merge -output=coremark.profdata coremark.profraw
echo ""
echo "Compile coremark.wasm to coremark_opt.aot with the profile data .."
${WAMRC} --use-prof-file=coremark.profdata -o coremark_opt.aot coremark.wasm
echo ""
echo "Run the coremark native"
./coremark.exe
echo ""
echo "Run the original aot file coremark.aot"
${IWASM} coremark.aot
echo ""
echo "Run the PGO optimized aot file coremark_opt.aot"
${IWASM} coremark_opt.aot
# Show the profile data:
# llvm-profdata show --all-functions --detailed-summary --binary-ids --counts \
# --hot-func-list --memop-sizes --show-prof-sym-list coremark.profraw

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#!/bin/sh
# Copyright (C) 2019 Intel Corporation. All rights reserved.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
PLATFORM=$(uname -s | tr A-Z a-z)
IWASM="../../../product-mini/platforms/${PLATFORM}/build/iwasm"
WAMRC="../../../wamr-compiler/build/wamrc"
if [ ! -e "dhrystone.wasm" ]; then
echo "dhrystone.wasm doesn't exist, please run build.sh first"
exit
fi
echo ""
echo "Compile dhrystone.wasm to dhrystone.aot .."
${WAMRC} -o dhrystone.aot dhrystone.wasm
echo ""
echo "Compile dhrystone.wasm to dhrystone_pgo.aot .."
${WAMRC} --enable-llvm-pgo -o dhrystone_pgo.aot dhrystone.wasm
echo ""
echo "Run dhrystone_pgo.aot to generate the raw profile data .."
${IWASM} --gen-prof-file=dhrystone.profraw dhrystone_pgo.aot
echo ""
echo "Merge the raw profile data to dhrystone.profdata .."
rm -f dhrystone.profdata && llvm-profdata merge -output=dhrystone.profdata dhrystone.profraw
echo ""
echo "Compile dhrystone.wasm to dhrystone_opt.aot with the profile data .."
${WAMRC} --use-prof-file=dhrystone.profdata -o dhrystone_opt.aot dhrystone.wasm
echo ""
echo "Run the dhrystone native"
./dhrystone_native
echo ""
echo "Run the original aot file dhrystone.aot"
${IWASM} dhrystone.aot
echo ""
echo "Run the PGO optimized aot file dhrystone_opt.aot"
${IWASM} dhrystone_opt.aot
# Show the profile data:
# llvm-profdata show --all-functions --detailed-summary --binary-ids --counts \
# --hot-func-list --memop-sizes --show-prof-sym-list dhrystone.profraw

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@ -27,3 +27,5 @@ And then run `./build.sh` to build the source code, the folder `out` will be cre
# Running
Run `./run_aot.sh` to test the benchmark, the native mode and iwasm aot mode will be tested for each workload, and the file `report.txt` will be generated.
Run `./test_pgo.sh` to test the benchmark with AOT static PGO (Profile-Guided Optimization) enabled, please refer [here](../README.md#install-llvm-profdata) to install tool `llvm-profdata` and build `iwasm` with `cmake -DWAMR_BUILD_STATIC_PGO=1`.

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#!/bin/bash
# Copyright (C) 2019 Intel Corporation. All rights reserved.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
CUR_DIR=$PWD
OUT_DIR=$CUR_DIR/out
REPORT=$CUR_DIR/report.txt
TIME=/usr/bin/time
PLATFORM=$(uname -s | tr A-Z a-z)
IWASM_CMD=$CUR_DIR/../../../product-mini/platforms/${PLATFORM}/build/iwasm
WAMRC_CMD=$CUR_DIR/../../../wamr-compiler/build/wamrc
BENCH_NAME_MAX_LEN=20
JETSTREAM_CASES="gcc-loops HashSet tsf float-mm quicksort"
rm -f $REPORT
touch $REPORT
function print_bench_name()
{
name=$1
echo -en "$name" >> $REPORT
name_len=${#name}
if [ $name_len -lt $BENCH_NAME_MAX_LEN ]
then
spaces=$(( $BENCH_NAME_MAX_LEN - $name_len ))
for i in $(eval echo "{1..$spaces}"); do echo -n " " >> $REPORT; done
fi
}
pushd $OUT_DIR > /dev/null 2>&1
for t in $JETSTREAM_CASES
do
if [ ! -e "${t}.wasm" ]; then
echo "${t}.wasm doesn't exist, please run build.sh first"
exit
fi
echo ""
echo "Compile ${t}.wasm to ${t}.aot .."
${WAMRC_CMD} -o ${t}.aot ${t}.wasm
echo ""
echo "Compile ${t}.wasm to ${t}_pgo.aot .."
${WAMRC_CMD} --enable-llvm-pgo -o ${t}_pgo.aot ${t}.wasm
echo ""
echo "Run ${t}_pgo.aot to generate the raw profile data .."
${IWASM_CMD} --gen-prof-file=${t}.profraw --dir=. ${t}_pgo.aot
echo ""
echo "Merge the raw profile data to ${t}.profdata .."
rm -f ${t}.profdata && llvm-profdata merge -output=${t}.profdata ${t}.profraw
echo ""
echo "Compile ${t}.wasm to ${t}_opt.aot with the profile data .."
${WAMRC_CMD} --use-prof-file=${t}.profdata -o ${t}_opt.aot ${t}.wasm
done
popd > /dev/null 2>&1
echo "Start to run cases, the result is written to report.txt"
#run benchmarks
cd $OUT_DIR
echo -en "\t\t\t\t\t native\tiwasm-aot\tiwasm-aot-pgo\n" >> $REPORT
for t in $JETSTREAM_CASES
do
print_bench_name $t
echo "run $t with native .."
echo -en "\t" >> $REPORT
$TIME -f "real-%e-time" ./${t}_native 2>&1 | grep "real-.*-time" | awk -F '-' '{ORS=""; print $2}' >> $REPORT
echo "run $t with iwasm aot .."
echo -en "\t" >> $REPORT
$TIME -f "real-%e-time" $IWASM_CMD --dir=. ${t}.aot 2>&1 | grep "real-.*-time" | awk -F '-' '{ORS=""; print $2}' >> $REPORT
echo "run $t with iwasm aot opt .."
echo -en "\t" >> $REPORT
$TIME -f "real-%e-time" $IWASM_CMD --dir=. ${t}_opt.aot 2>&1 | grep "real-.*-time" | awk -F '-' '{ORS=""; print $2}' >> $REPORT
echo -en "\n" >> $REPORT
done

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#!/bin/bash
# Copyright (C) 2019 Intel Corporation. All rights reserved.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
libsodium_CASES="aead_aes256gcm2 aead_aes256gcm aead_chacha20poly13052 aead_chacha20poly1305 \
aead_xchacha20poly1305 auth2 auth3 auth5 auth6 auth7 auth box2 box7 box8 \
box_easy2 box_easy box_seal box_seed box chacha20 codecs core1 core2 core3 \
core4 core5 core6 core_ed25519 core_ristretto255 ed25519_convert generichash2 \
generichash3 generichash hash3 hash kdf keygen kx metamorphic misuse \
onetimeauth2 onetimeauth7 onetimeauth pwhash_argon2id pwhash_argon2i \
pwhash_scrypt_ll pwhash_scrypt randombytes scalarmult2 scalarmult5 \
scalarmult6 scalarmult7 scalarmult8 scalarmult_ed25519 scalarmult_ristretto255 \
scalarmult secretbox2 secretbox7 secretbox8 secretbox_easy2 secretbox_easy \
secretbox secretstream shorthash sign siphashx24 sodium_core sodium_utils2 \
sodium_utils stream2 stream3 stream4 stream verify1 xchacha20"
PLATFORM=$(uname -s | tr A-Z a-z)
readonly OUT_DIR=$PWD/libsodium/zig-out/bin
readonly REPORT=$PWD/report.txt
readonly IWASM_CMD=$PWD/../../../product-mini/platforms/${PLATFORM}/build/iwasm
readonly WAMRC_CMD=$PWD/../../../wamr-compiler/build/wamrc
readonly TIME=/usr/bin/time
BENCH_NAME_MAX_LEN=20
rm -f $REPORT
touch $REPORT
function print_bench_name()
{
name=$1
echo -en "$name" >> $REPORT
name_len=${#name}
if [ $name_len -lt $BENCH_NAME_MAX_LEN ]
then
spaces=$(( $BENCH_NAME_MAX_LEN - $name_len ))
for i in $(eval echo "{1..$spaces}"); do echo -n " " >> $REPORT; done
fi
}
pushd $OUT_DIR > /dev/null 2>&1
for t in $libsodium_CASES
do
if [ ! -e "${t}.wasm" ]; then
echo "${t}.wasm doesn't exist, please run build.sh first"
exit
fi
echo ""
echo "Compile ${t}.wasm to ${t}.aot .."
${WAMRC_CMD} -o ${t}.aot ${t}.wasm
echo ""
echo "Compile ${t}.wasm to ${t}_pgo.aot .."
${WAMRC_CMD} --enable-llvm-pgo -o ${t}_pgo.aot ${t}.wasm
echo ""
echo "Run ${t}_pgo.aot to generate the raw profile data .."
${IWASM_CMD} --gen-prof-file=${t}.profraw --dir=. ${t}_pgo.aot
echo ""
echo "Merge the raw profile data to ${t}.profdata .."
rm -f ${t}.profdata && llvm-profdata merge -output=${t}.profdata ${t}.profraw
echo ""
echo "Compile ${t}.wasm to ${t}_opt.aot with the profile data .."
${WAMRC_CMD} --use-prof-file=${t}.profdata -o ${t}_opt.aot ${t}.wasm
done
# run benchmarks
cd $OUT_DIR
echo -en "\t\t\t\t\t\tnative\tiwasm-aot\tiwasm-aot-pgo\n" >> $REPORT
for t in $libsodium_CASES
do
print_bench_name $t
echo "run $t with native..."
echo -en "\t" >> $REPORT
if [[ $t != "sodium_utils2" ]]; then
./${t} | awk '{printf "%-10.2f", $0/1000000.0}' >> $REPORT
else
# sodium_utils2 doesn't print the result,
# use time command to get result instead
$TIME -f "real-%e-time" ./${t} 2>&1 | grep "real-.*-time" |
awk -F '-' '{printf "%-10.2f", $2}' >> $REPORT
fi
echo "run $t with iwasm aot..."
echo -en "\t \t" >> $REPORT
if [[ $t != "sodium_utils2" ]]; then
$IWASM_CMD ${t}.aot | awk '{printf "%-10.2f", $0/1000000.0}' >> $REPORT
else
# sodium_utils2 doesn't print the result,
# use time command to get result instead
$TIME -f "real-%e-time" $IWASM_CMD ${t}.aot 2>&1 | grep "real-.*-time" |
awk -F '-' '{printf "%-10.2f", $2}' >> $REPORT
fi
echo "run $t with iwasm aot opt..."
echo -en "\t \t" >> $REPORT
if [[ $t != "sodium_utils2" ]]; then
$IWASM_CMD ${t}_opt.aot | awk '{printf "%-10.2f", $0/1000000.0}' >> $REPORT
else
# sodium_utils2 doesn't print the result,
# use time command to get result instead
$TIME -f "real-%e-time" $IWASM_CMD ${t}_opt.aot 2>&1 | grep "real-.*-time" |
awk -F '-' '{printf "%-10.2f", $2}' >> $REPORT
fi
echo -en "\n" >> $REPORT
done

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#!/bin/bash
# Copyright (C) 2019 Intel Corporation. All rights reserved.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
CUR_DIR=$PWD
OUT_DIR=$CUR_DIR/out
REPORT=$CUR_DIR/report.txt
TIME=/usr/bin/time
PLATFORM=$(uname -s | tr A-Z a-z)
IWASM_CMD=$CUR_DIR/../../../product-mini/platforms/${PLATFORM}/build/iwasm
WAMRC_CMD=$CUR_DIR/../../../wamr-compiler/build/wamrc
BENCH_NAME_MAX_LEN=20
POLYBENCH_CASES="2mm 3mm adi atax bicg cholesky correlation covariance \
deriche doitgen durbin fdtd-2d floyd-warshall gemm gemver \
gesummv gramschmidt heat-3d jacobi-1d jacobi-2d ludcmp lu \
mvt nussinov seidel-2d symm syr2k syrk trisolv trmm"
rm -f $REPORT
touch $REPORT
function print_bench_name()
{
name=$1
echo -en "$name" >> $REPORT
name_len=${#name}
if [ $name_len -lt $BENCH_NAME_MAX_LEN ]
then
spaces=$(( $BENCH_NAME_MAX_LEN - $name_len ))
for i in $(eval echo "{1..$spaces}"); do echo -n " " >> $REPORT; done
fi
}
pushd $OUT_DIR > /dev/null 2>&1
for t in $POLYBENCH_CASES
do
if [ ! -e "${t}.wasm" ]; then
echo "${t}.wasm doesn't exist, please run build.sh first"
exit
fi
echo ""
echo "Compile ${t}.wasm to ${t}.aot .."
${WAMRC_CMD} -o ${t}.aot ${t}.wasm
echo ""
echo "Compile ${t}.wasm to ${t}_pgo.aot .."
${WAMRC_CMD} --enable-llvm-pgo -o ${t}_pgo.aot ${t}.wasm
echo ""
echo "Run ${t}_pgo.aot to generate the raw profile data .."
${IWASM_CMD} --gen-prof-file=${t}.profraw --dir=. ${t}_pgo.aot
echo ""
echo "Merge the raw profile data to ${t}.profdata .."
rm -f ${t}.profdata && llvm-profdata merge -output=${t}.profdata ${t}.profraw
echo ""
echo "Compile ${t}.wasm to ${t}_opt.aot with the profile data .."
${WAMRC_CMD} --use-prof-file=${t}.profdata -o ${t}_opt.aot ${t}.wasm
done
popd > /dev/null 2>&1
echo "Start to run cases, the result is written to report.txt"
#run benchmarks
cd $OUT_DIR
echo -en "\t\t\t\t\t native\tiwasm-aot\tiwasm-aot-pgo\n" >> $REPORT
for t in $POLYBENCH_CASES
do
print_bench_name $t
echo "run $t with native .."
echo -en "\t" >> $REPORT
$TIME -f "real-%e-time" ./${t}_native 2>&1 | grep "real-.*-time" | awk -F '-' '{ORS=""; print $2}' >> $REPORT
echo "run $t with iwasm aot .."
echo -en "\t" >> $REPORT
$TIME -f "real-%e-time" $IWASM_CMD ${t}.aot 2>&1 | grep "real-.*-time" | awk -F '-' '{ORS=""; print $2}' >> $REPORT
echo "run $t with iwasm aot opt .."
echo -en "\t" >> $REPORT
$TIME -f "real-%e-time" $IWASM_CMD ${t}_opt.aot 2>&1 | grep "real-.*-time" | awk -F '-' '{ORS=""; print $2}' >> $REPORT
echo -en "\n" >> $REPORT
done

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@ -19,3 +19,5 @@ And then run `./build.sh` to build the source code, the folder `out` will be cre
Run `./run_aot.sh` to test the benchmark, the native mode and iwasm aot mode will be tested for each workload, and the file `report.txt` will be generated.
Run `./run_interp.sh` to test the benchmark, the native mode and iwasm interpreter mode will be tested for each workload, and the file `report.txt` will be generated.
Run `./test_pgo.sh` to test the benchmark with AOT static PGO (Profile-Guided Optimization) enabled, please refer [here](../README.md#install-llvm-profdata) to install tool `llvm-profdata` and build `iwasm` with `cmake -DWAMR_BUILD_STATIC_PGO=1`.

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#!/bin/bash
# Copyright (C) 2019 Intel Corporation. All rights reserved.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
CUR_DIR=$PWD
OUT_DIR=$CUR_DIR/out
REPORT=$CUR_DIR/report.txt
TIME=/usr/bin/time
PLATFORM=$(uname -s | tr A-Z a-z)
IWASM_CMD=$CUR_DIR/../../../product-mini/platforms/${PLATFORM}/build/iwasm
WAMRC_CMD=$CUR_DIR/../../../wamr-compiler/build/wamrc
BENCH_NAME_MAX_LEN=20
SHOOTOUT_CASES="base64 fib2 gimli heapsort matrix memmove nestedloop \
nestedloop2 nestedloop3 random seqhash sieve strchr \
switch2"
rm -f $REPORT
touch $REPORT
function print_bench_name()
{
name=$1
echo -en "$name" >> $REPORT
name_len=${#name}
if [ $name_len -lt $BENCH_NAME_MAX_LEN ]
then
spaces=$(( $BENCH_NAME_MAX_LEN - $name_len ))
for i in $(eval echo "{1..$spaces}"); do echo -n " " >> $REPORT; done
fi
}
pushd $OUT_DIR > /dev/null 2>&1
for t in $SHOOTOUT_CASES
do
if [ ! -e "${t}.wasm" ]; then
echo "${t}.wasm doesn't exist, please run build.sh first"
exit
fi
echo ""
echo "Compile ${t}.wasm to ${t}.aot .."
${WAMRC_CMD} -o ${t}.aot ${t}.wasm
echo ""
echo "Compile ${t}.wasm to ${t}_pgo.aot .."
${WAMRC_CMD} --enable-llvm-pgo -o ${t}_pgo.aot ${t}.wasm
echo ""
echo "Run ${t}_pgo.aot to generate the raw profile data .."
${IWASM_CMD} --gen-prof-file=${t}.profraw --dir=. ${t}_pgo.aot
echo ""
echo "Merge the raw profile data to ${t}.profdata .."
rm -f ${t}.profdata && llvm-profdata merge -output=${t}.profdata ${t}.profraw
echo ""
echo "Compile ${t}.wasm to ${t}_opt.aot with the profile data .."
${WAMRC_CMD} --use-prof-file=${t}.profdata -o ${t}_opt.aot ${t}.wasm
done
popd > /dev/null 2>&1
echo "Start to run cases, the result is written to report.txt"
#run benchmarks
cd $OUT_DIR
echo -en "\t\t\t\t\t native\tiwasm-aot\tiwasm-aot-pgo\n" >> $REPORT
for t in $SHOOTOUT_CASES
do
print_bench_name $t
echo "run $t with native .."
echo -en "\t" >> $REPORT
$TIME -f "real-%e-time" ./${t}_native 2>&1 | grep "real-.*-time" | awk -F '-' '{ORS=""; print $2}' >> $REPORT
echo "run $t with iwasm aot .."
echo -en "\t" >> $REPORT
$TIME -f "real-%e-time" $IWASM_CMD ${t}.aot 2>&1 | grep "real-.*-time" | awk -F '-' '{ORS=""; print $2}' >> $REPORT
echo "run $t with iwasm aot opt .."
echo -en "\t" >> $REPORT
$TIME -f "real-%e-time" $IWASM_CMD ${t}_opt.aot 2>&1 | grep "real-.*-time" | awk -F '-' '{ORS=""; print $2}' >> $REPORT
echo -en "\n" >> $REPORT
done