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https://github.com/bytecodealliance/wasm-micro-runtime.git
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76be848ec3
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>
24 lines
709 B
Diff
24 lines
709 B
Diff
diff -urN jetstream-org/HashSet.cpp jetstream/HashSet.cpp
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--- jetstream-org/HashSet.cpp 2020-10-30 04:12:42.000000000 +0800
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+++ jetstream/HashSet.cpp 2022-01-24 17:11:08.619831711 +0800
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@@ -22,8 +22,10 @@
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#include <algorithm>
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#include <memory>
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+#include <limits>
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#include <stdio.h>
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#include <stdlib.h>
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+#include <string.h>
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#include <sys/time.h>
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// Compile with: xcrun clang++ -o HashSet HashSet.cpp -O2 -W -framework Foundation -licucore -std=c++11 -fvisibility=hidden -DNDEBUG=1
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@@ -76,7 +78,7 @@
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inline ToType bitwise_cast(FromType from)
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{
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typename std::remove_const<ToType>::type to { };
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- std::memcpy(&to, &from, sizeof(to));
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+ memcpy(&to, &from, sizeof(to));
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return to;
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}
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