Enable static PGO for Linux SGX (#2270)

Enable static PGO for Linux SGX and update the related benchmarks
test scripts and documents.

tests/benchmarks/libsodium/README.md

@@ -18,6 +18,12 @@ And then run `./build.sh` to build the source code, the libsodium source code wi
 
 Run `./run_aot.sh` to test the benchmark, the native mode and iwasm aot 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`.
+
+- For Linux, build `iwasm` with `cmake -DWAMR_BUILD_STATIC_PGO=1`, then run `./test_pgo.sh` to test the benchmark with AOT static PGO (Profile-Guided Optimization) enabled.
+
+- For Linux-sgx, similarly, build `iwasm` with `cmake -DWAMR_BUILD_STATIC_PGO=1`, then `make` in the directory `enclave-sample`. And run `./test_pgo.sh --sgx` to test the benchmark.
+
 # Others
 
 Refer to [Performance of WebAssembly runtimes in 2023](https://00f.net/2023/01/04/webassembly-benchmark-2023) for more about the performance comparison of wasm runtimes on running the libsodium benchmarks.

tests/benchmarks/libsodium/test_pgo.sh

@@ -19,8 +19,13 @@ 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
+if [ "$1" = "--sgx" ] && [ "$PLATFORM" = "linux" ]; then
+    readonly IWASM_CMD="$PWD/../../../product-mini/platforms/${PLATFORM}-sgx/enclave-sample/iwasm"
+    readonly WAMRC_CMD="$PWD/../../../wamr-compiler/build/wamrc -sgx"
+else
+    readonly IWASM_CMD="$PWD/../../../product-mini/platforms/${PLATFORM}/build/iwasm"
+    readonly WAMRC_CMD="$PWD/../../../wamr-compiler/build/wamrc"
+fi
 readonly TIME=/usr/bin/time
 
 BENCH_NAME_MAX_LEN=20