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[browser][mono] WasmOptConfigurationFlags cleanup #120423

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7128a16
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pavelsavara Oct 7, 2025
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pavelsavara Oct 7, 2025
21219b4
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pavelsavara Oct 7, 2025
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pavelsavara Oct 7, 2025
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38 changes: 27 additions & 11 deletions src/mono/browser/browser.proj
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Original file line number Diff line number Diff line change
Expand Up @@ -193,10 +193,32 @@
<ItemGroup Condition="'$(WasmEnableThreads)' == 'true'">
<EmccExportedFunction Include="_emscripten_main_runtime_thread_id" />
</ItemGroup>
<ItemGroup>
<WasmOptConfigurationFlags Include="--all-features" />
<WasmOptConfigurationFlags Include="--enable-bulk-memory" />
<WasmOptConfigurationFlags Include="--enable-sign-ext" />
<WasmOptConfigurationFlags Include="--translate-to-new-eh" />
<!-- emscripten defaults -->
<WasmOptConfigurationFlags Include="--low-memory-unused" />
<WasmOptConfigurationFlags Include="--zero-filled-memory" />
<WasmOptConfigurationFlags Include="--enable-reference-types" />
<WasmOptConfigurationFlags Include="--enable-mutable-globals" />
<WasmOptConfigurationFlags Include="--enable-multivalue" />
<WasmOptConfigurationFlags Include="--mvp-features" />
<WasmOptConfigurationFlags Include="--pass-arg=directize-initial-contents-immutable" />
<WasmOptConfigurationFlags Include="--post-emscripten" />
<WasmOptConfigurationFlags Include="--strip-target-features" />
</ItemGroup>
<ItemGroup Condition="'$(WasmEnableThreads)' == 'true'">
<WasmOptConfigurationFlags Include="--enable-threads" />
<!-- workaround for https://github.com/emscripten-core/emscripten/issues/18034 -->
<_EmccLinkFlags Include="-s TEXTDECODER=0"/>
</ItemGroup>
<PropertyGroup>
<_EmccExportedLibraryFunction>"[@(EmccExportedLibraryFunction -> '%27%(Identity)%27', ',')]"</_EmccExportedLibraryFunction>
<_EmccExportedRuntimeMethods>"[@(EmccExportedRuntimeMethod -> '%27%(Identity)%27', ',')]"</_EmccExportedRuntimeMethods>
<_EmccExportedFunctions>@(EmccExportedFunction -> '%(Identity)',',')</_EmccExportedFunctions>
<_WasmOptConfigurationFlags>"@(WasmOptConfigurationFlags -> '%27%(Identity)%27', ',')"</_WasmOptConfigurationFlags>
<!-- reserve at least enough space to complete initializing sgen without growing the heap -->
<EmccInitialHeapSize>33554432</EmccInitialHeapSize>
<EmccStackSize>5MB</EmccStackSize>
Expand All @@ -209,6 +231,7 @@
<_EmccLinkFlags Condition="'$(WasmEnableThreads)' == 'true'" Include="-Wno-pthreads-mem-growth" />
<_EmccLinkFlags Condition="'$(WasmEnableThreads)' == 'true'" Include="-s PTHREAD_POOL_SIZE=0" />
<_EmccLinkFlags Condition="'$(WasmEnableThreads)' == 'true'" Include="-s PTHREAD_POOL_SIZE_STRICT=0" />
<_EmccLinkFlags Condition="'$(WasmEnableSIMD)' == 'true'" Include="-s BINARYEN_EXTRA_PASSES=$(_WasmOptConfigurationFlags)" />
<_EmccLinkFlags Include="-s ALLOW_MEMORY_GROWTH=1" />
<!-- for jiterpreter -->
<_EmccLinkFlags Include="-s ALLOW_TABLE_GROWTH=1" />
Expand All @@ -228,13 +251,6 @@
<_EmccLinkFlags Include="-Wno-limited-postlink-optimizations"/>
</ItemGroup>

<ItemGroup Condition="'$(WasmEnableThreads)' == 'true'">
<WasmOptConfigurationFlags Include="--enable-threads;--enable-bulk-memory;--enable-sign-ext" />

<!-- workaround for https://github.com/emscripten-core/emscripten/issues/18034 -->
<_EmccLinkFlags Include="-s TEXTDECODER=0"/>
</ItemGroup>

<ItemGroup Condition="'$(OS)' != 'Windows_NT'">
<_EmccLinkFlags Include="--profiling-funcs" />
<_EmccFlags Include="@(_EmccCommonFlags)" />
Expand Down Expand Up @@ -307,13 +323,13 @@

<CMakeConfigurationEmccFlags Condition="'$(Configuration)' == 'Debug'">-g -Os -DDEBUG=1</CMakeConfigurationEmccFlags>
<CMakeConfigurationEmccFlags Condition="'$(Configuration)' == 'Release'">-Oz</CMakeConfigurationEmccFlags>
<CMakeConfigurationEmccFlags Condition="'$(WasmEnableSIMD)' == 'true'">$(CMakeConfigurationEmccFlags) -msimd128 -mbulk-memory</CMakeConfigurationEmccFlags>

<CMakeConfigurationLinkFlags Condition="'$(Configuration)' == 'Debug'" >$(CMakeConfigurationEmccFlags) -s ASSERTIONS=1 </CMakeConfigurationLinkFlags>
<CMakeConfigurationLinkFlags Condition="'$(Configuration)' == 'Release'">-O2</CMakeConfigurationLinkFlags>
<CMakeConfigurationLinkFlags Condition="'$(Configuration)' == 'Debug'" >$(CMakeConfigurationEmccFlags) --all-features -s ASSERTIONS=1 </CMakeConfigurationLinkFlags>
<CMakeConfigurationLinkFlags Condition="'$(Configuration)' == 'Release'">-O2 --all-features </CMakeConfigurationLinkFlags>

<!-- -lexports.js has the magical property of disabling minification of export names -->
<CMakeConfigurationLinkFlags>$(CMakeConfigurationLinkFlags) -s EXPORT_ES6=1 -lexports.js</CMakeConfigurationLinkFlags>
<CMakeConfigurationLinkFlags Condition="'$(WasmEnableSIMD)' == 'true'">$(CMakeConfigurationLinkFlags) -msimd128</CMakeConfigurationLinkFlags>
<CMakeConfigurationLinkFlags Condition="'$(WasmEnableThreads)' == 'true'">$(CMakeConfigurationLinkFlags) -Wno-pthreads-mem-growth</CMakeConfigurationLinkFlags>
<CMakeConfigurationLinkFlags >$(CMakeConfigurationLinkFlags) --emit-symbol-map</CMakeConfigurationLinkFlags>

Expand All @@ -328,7 +344,7 @@
<CMakeBuildRuntimeConfigureCmd>$(CMakeBuildRuntimeConfigureCmd) -DMONO_OBJ_INCLUDES=&quot;$(MonoObjDir.TrimEnd('\/').Replace('\','/'))&quot;</CMakeBuildRuntimeConfigureCmd>
<CMakeBuildRuntimeConfigureCmd>$(CMakeBuildRuntimeConfigureCmd) -DMONO_ARTIFACTS_DIR=&quot;$(MonoArtifactsPath.TrimEnd('\/').Replace('\','/'))&quot;</CMakeBuildRuntimeConfigureCmd>
<CMakeBuildRuntimeConfigureCmd>$(CMakeBuildRuntimeConfigureCmd) -DNATIVE_BIN_DIR=&quot;$(NativeBinDir.TrimEnd('\/').Replace('\','/'))&quot;</CMakeBuildRuntimeConfigureCmd>
<CMakeBuildRuntimeConfigureCmd Condition="'$(WasmEnableSIMD)' == 'true'">$(CMakeBuildRuntimeConfigureCmd) -DCONFIGURATION_COMPILE_OPTIONS=&quot;-msimd128&quot; -DCONFIGURATION_INTERPSIMDTABLES_LIB=&quot;simd&quot;</CMakeBuildRuntimeConfigureCmd>
<CMakeBuildRuntimeConfigureCmd Condition="'$(WasmEnableSIMD)' == 'true'">$(CMakeBuildRuntimeConfigureCmd) -DCONFIGURATION_COMPILE_OPTION1=&quot;-msimd128&quot; -DCONFIGURATION_COMPILE_OPTION2=&quot;-mbulk-memory&quot; -DCONFIGURATION_INTERPSIMDTABLES_LIB=&quot;simd&quot;</CMakeBuildRuntimeConfigureCmd>
<CMakeBuildRuntimeConfigureCmd Condition="'$(WasmEnableSIMD)' != 'true'">$(CMakeBuildRuntimeConfigureCmd) -DCONFIGURATION_INTERPSIMDTABLES_LIB=&quot;nosimd&quot;</CMakeBuildRuntimeConfigureCmd>
<CMakeBuildRuntimeConfigureCmd Condition="'$(WasmEnableThreads)' == 'true'">$(CMakeBuildRuntimeConfigureCmd) -DDISABLE_THREADS=0</CMakeBuildRuntimeConfigureCmd>
<CMakeBuildRuntimeConfigureCmd Condition="'$(WasmEnableJsInteropByValue)' == 'true'">$(CMakeBuildRuntimeConfigureCmd) -DENABLE_JS_INTEROP_BY_VALUE=1</CMakeBuildRuntimeConfigureCmd>
Expand Down Expand Up @@ -394,7 +410,7 @@

<Exec Command="$(CMakeBuildRuntimeConfigureCmd)" WorkingDirectory="$(NativeBinDir)"
EnvironmentVariables="@(_CmakeEnvironmentVariable)" />
<Exec Command="$(CMakeBuildRuntimeCmd)" WorkingDirectory="$(NativeBinDir)"

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src/mono/browser/browser.proj#L413 

src/mono/browser/browser.proj(413,5): error MSB3073: (NETCORE_ENGINEERING_TELEMETRY=Build) The command "bash -c 'source /__w/1/s/src/mono/browser/emsdk//emsdk_env.sh 2>&1 &&  cmake --build . --config Release '" exited with code 2.

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Azure Pipelines / runtime (Build browser-wasm linux Release AllSubsets_Mono_RuntimeTests monointerpreter)

src/mono/browser/browser.proj#L413 

src/mono/browser/browser.proj(413,5): error MSB3073: (NETCORE_ENGINEERING_TELEMETRY=Build) The command "bash -c 'source /__w/1/s/src/mono/browser/emsdk//emsdk_env.sh 2>&1 &&  cmake --build . --config Release '" exited with code 2.

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Azure Pipelines / runtime (Build browser-wasm linux Release SingleThreaded_BuildOnly)

src/mono/browser/browser.proj#L413 

src/mono/browser/browser.proj(413,5): error MSB3073: (NETCORE_ENGINEERING_TELEMETRY=Build) The command "bash -c 'source /__w/1/s/src/mono/browser/emsdk//emsdk_env.sh 2>&1 &&  cmake --build . --config Release '" exited with code 2.

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Azure Pipelines / dotnet-linker-tests (Build browser-wasm linux release Runtime_Release)

src/mono/browser/browser.proj#L413 

src/mono/browser/browser.proj(413,5): error MSB3073: (NETCORE_ENGINEERING_TELEMETRY=Build) The command "bash -c 'source /__w/1/s/src/mono/browser/emsdk//emsdk_env.sh 2>&1 &&  cmake --build . --config Release '" exited with code 2.

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src/mono/browser/browser.proj#L413 

src/mono/browser/browser.proj(413,5): error MSB3073: (NETCORE_ENGINEERING_TELEMETRY=Build) The command "bash -c 'source /__w/1/s/src/mono/browser/emsdk//emsdk_env.sh 2>&1 &&  cmake --build . --config Release '" exited with code 2.

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Azure Pipelines / runtime (Build browser-wasm linux Release LibraryTests_EAT)

src/mono/browser/browser.proj#L413 

src/mono/browser/browser.proj(413,5): error MSB3073: (NETCORE_ENGINEERING_TELEMETRY=Build) The command "bash -c 'source /__w/1/s/src/mono/browser/emsdk//emsdk_env.sh 2>&1 &&  cmake --build . --config Release '" exited with code 2.

Check failure on line 413 in src/mono/browser/browser.proj

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Azure Pipelines / runtime (Build browser-wasm linux Release LibraryTests)

src/mono/browser/browser.proj#L413 

src/mono/browser/browser.proj(413,5): error MSB3073: (NETCORE_ENGINEERING_TELEMETRY=Build) The command "bash -c 'source /__w/1/s/src/mono/browser/emsdk//emsdk_env.sh 2>&1 &&  cmake --build . --config Release '" exited with code 2.

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Azure Pipelines / runtime (Build browser-wasm linux Release LibraryTests_Smoke_AOT)

src/mono/browser/browser.proj#L413 

src/mono/browser/browser.proj(413,5): error MSB3073: (NETCORE_ENGINEERING_TELEMETRY=Build) The command "bash -c 'source /__w/1/s/src/mono/browser/emsdk//emsdk_env.sh 2>&1 &&  cmake --build . --config Release '" exited with code 2.

Check failure on line 413 in src/mono/browser/browser.proj

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Azure Pipelines / runtime

src/mono/browser/browser.proj#L413 

src/mono/browser/browser.proj(413,5): error MSB3073: (NETCORE_ENGINEERING_TELEMETRY=Build) The command "bash -c 'source /__w/1/s/src/mono/browser/emsdk//emsdk_env.sh 2>&1 &&  cmake --build . --config Release '" exited with code 2.
EnvironmentVariables="@(_CmakeEnvironmentVariable)" />

<ItemGroup>
Expand Down
2 changes: 1 addition & 1 deletion src/mono/browser/build/BrowserWasmApp.targets
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Expand Up @@ -56,7 +56,7 @@

<_WasmDefaultFlags Condition="'$(WasmEnableExceptionHandling)' == 'false'">-fexceptions</_WasmDefaultFlags>
<_WasmDefaultFlags Condition="'$(WasmEnableExceptionHandling)' != 'false'">-fwasm-exceptions</_WasmDefaultFlags>
<_WasmDefaultFlags Condition="'$(WasmEnableSIMD)' == 'true'">-msimd128</_WasmDefaultFlags>
<_WasmDefaultFlags Condition="'$(WasmEnableSIMD)' == 'true'">-msimd128 -mbulk-memory</_WasmDefaultFlags>

<_WasmOutputFileName Condition="'$(WasmSingleFileBundle)' != 'true'">dotnet.native.wasm</_WasmOutputFileName>

Expand Down
6 changes: 3 additions & 3 deletions src/mono/browser/runtime/CMakeLists.txt
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Expand Up @@ -9,7 +9,7 @@ set(CMAKE_EXECUTABLE_SUFFIX ".js")
add_executable(dotnet.native runtime.c corebindings.c driver.c pinvoke.c)

target_include_directories(dotnet.native PUBLIC ${MONO_INCLUDES} ${MONO_OBJ_INCLUDES} ${CMAKE_CURRENT_BINARY_DIR}/include/wasm)
target_compile_options(dotnet.native PUBLIC @${NATIVE_BIN_DIR}/src/emcc-default.rsp @${NATIVE_BIN_DIR}/src/emcc-compile.rsp -DGEN_PINVOKE=1 ${CONFIGURATION_COMPILE_OPTIONS})
target_compile_options(dotnet.native PUBLIC @${NATIVE_BIN_DIR}/src/emcc-default.rsp @${NATIVE_BIN_DIR}/src/emcc-compile.rsp -DGEN_PINVOKE=1 ${CONFIGURATION_COMPILE_OPTION1} ${CONFIGURATION_COMPILE_OPTION2})

set_target_properties(dotnet.native PROPERTIES COMPILE_FLAGS ${CONFIGURATION_EMCC_FLAGS})

Expand Down Expand Up @@ -39,12 +39,12 @@ set_target_properties(dotnet.native PROPERTIES
RUNTIME_OUTPUT_DIRECTORY "${NATIVE_BIN_DIR}")

set(ignoreMeWasmOptFlags "${CONFIGURATION_WASM_OPT_FLAGS}")
set(ignoreMeWasmOptAdditionalFlags "${CONFIGURATION_COMPILE_OPTIONS}")
set(ignoreMeWasmOptAdditionalFlags "${CONFIGURATION_COMPILE_OPTION1}" "${CONFIGURATION_COMPILE_OPTION2}")
set(ignoreMeEmsdkPath "${EMSDK_PATH}")

if(CMAKE_BUILD_TYPE STREQUAL "Release")
add_custom_command(TARGET dotnet.native
POST_BUILD COMMAND ${EMSDK_PATH}/bin/wasm-opt --enable-exception-handling --enable-simd --enable-bulk-memory ${CONFIGURATION_WASM_OPT_FLAGS} --strip-dwarf ${NATIVE_BIN_DIR}/dotnet.native.wasm -o ${NATIVE_BIN_DIR}/dotnet.native.wasm
POST_BUILD COMMAND ${EMSDK_PATH}/bin/wasm-opt ${CONFIGURATION_WASM_OPT_FLAGS} --strip-dwarf ${NATIVE_BIN_DIR}/dotnet.native.wasm -o ${NATIVE_BIN_DIR}/dotnet.native.wasm
COMMENT "Stripping debug symbols from dotnet.native.wasm using wasm-opt")
endif()

Expand Down
2 changes: 1 addition & 1 deletion src/mono/mono/mini/CMakeLists.txt
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Expand Up @@ -484,7 +484,7 @@ endif()
if(HOST_BROWSER OR HOST_WASI)
add_library(mono-wasm-simd STATIC interp/interp-simd.c)
target_link_libraries (mono-wasm-simd PRIVATE monoapi eglib_api)
set_target_properties(mono-wasm-simd PROPERTIES COMPILE_FLAGS "-msimd128")
set_target_properties(mono-wasm-simd PROPERTIES COMPILE_FLAGS "-msimd128 -mbulk-memory")
install(TARGETS mono-wasm-simd LIBRARY)
endif()

Expand Down
10 changes: 8 additions & 2 deletions src/mono/wasi/wasi.proj
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Expand Up @@ -59,8 +59,14 @@
<Target Name="GenerateWasiPropsAndRspFiles">

<!-- Generate wasm-props.json -->
<ItemGroup>
<WasmOptConfigurationFlags Include="--all-features" />
<WasmOptConfigurationFlags Include="--enable-bulk-memory" />
<WasmOptConfigurationFlags Include="--enable-sign-ext" />
<WasmOptConfigurationFlags Include="--low-memory-unused" />
</ItemGroup>
<ItemGroup Condition="'$(WasmEnableThreads)' == 'true'">
<WasmOptConfigurationFlags Include="--enable-threads;--enable-bulk-memory;--enable-sign-ext" />
<WasmOptConfigurationFlags Include="--enable-threads" />
</ItemGroup>

<ItemGroup>
Expand Down Expand Up @@ -156,7 +162,7 @@
<CMakeBuildRuntimeConfigureCmd>$(CMakeBuildRuntimeConfigureCmd) -DMONO_OBJ_INCLUDES=&quot;$(MonoObjDir.TrimEnd('\/'))&quot;</CMakeBuildRuntimeConfigureCmd>
<CMakeBuildRuntimeConfigureCmd>$(CMakeBuildRuntimeConfigureCmd) -DMONO_ARTIFACTS_DIR=&quot;$(MonoArtifactsPath.TrimEnd('\/'))&quot;</CMakeBuildRuntimeConfigureCmd>
<CMakeBuildRuntimeConfigureCmd>$(CMakeBuildRuntimeConfigureCmd) -DNATIVE_BIN_DIR=&quot;$(NativeBinDir.TrimEnd('\/'))&quot;</CMakeBuildRuntimeConfigureCmd>
<CMakeBuildRuntimeConfigureCmd Condition="'$(WasmEnableSIMD)' == 'true'">$(CMakeBuildRuntimeConfigureCmd) -DCONFIGURATION_COMPILE_OPTIONS=&quot;-msimd128&quot; -DCONFIGURATION_INTERPSIMDTABLES_LIB=&quot;simd&quot;</CMakeBuildRuntimeConfigureCmd>
<CMakeBuildRuntimeConfigureCmd Condition="'$(WasmEnableSIMD)' == 'true'">$(CMakeBuildRuntimeConfigureCmd) -DCONFIGURATION_COMPILE_OPTIONS=&quot;-msimd128 -mbulk-memory&quot; -DCONFIGURATION_INTERPSIMDTABLES_LIB=&quot;simd&quot;</CMakeBuildRuntimeConfigureCmd>
<CMakeBuildRuntimeConfigureCmd Condition="'$(WasmEnableSIMD)' != 'true'">$(CMakeBuildRuntimeConfigureCmd) -DCONFIGURATION_INTERPSIMDTABLES_LIB=&quot;nosimd&quot;</CMakeBuildRuntimeConfigureCmd>
<CMakeBuildRuntimeConfigureCmd Condition="'$(WasmEnableThreads)' == 'true'">$(CMakeBuildRuntimeConfigureCmd) -DDISABLE_THREADS=0</CMakeBuildRuntimeConfigureCmd>
<CMakeBuildRuntimeConfigureCmd Condition="'$(OS)' == 'Windows_NT'">call &quot;$(RepositoryEngineeringDir)native\init-vs-env.cmd&quot; wasm &amp;&amp; $(CMakeBuildRuntimeConfigureCmd)</CMakeBuildRuntimeConfigureCmd>
Expand Down
10 changes: 5 additions & 5 deletions src/mono/wasm/build/WasmApp.Common.targets
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Expand Up @@ -462,12 +462,12 @@

<Target Name="_WasmCommonPrepareForWasmBuildNative" Condition="'$(WasmBuildNative)' == 'true'">
<ItemGroup>
<!-- WasmOptConfigurationFlags property is set by reading from wasm-props.json -->
<WasmOptConfigurationFlags Include="@(_DefaulWasmOptConfigurationFlags)" />

<WasmOptConfigurationFlags Include="--enable-simd" Condition="'$(WasmEnableSIMD)' == 'true'" />
<WasmOptConfigurationFlags Include="--enable-exception-handling" Condition="'$(WasmExceptionHandling)' == 'true'" />
<WasmOptConfigurationFlags Include="--strip-dwarf" Condition="'$(WasmNativeStrip)' == 'true'" />

<!-- WasmOptConfigurationFlags property is set by reading from wasm-props.json -->
<WasmOptConfigurationFlags Include="@(_DefaulWasmOptConfigurationFlags)" />
</ItemGroup>
</Target>

Expand Down Expand Up @@ -911,8 +911,8 @@
<Target Name="_RunWasmOptPostLink" Condition="'$(WasmRunWasmOpt)' == 'true'">
<Error Condition="'$(_WasmOutputFileName)' == ''" Text="Could not determine %24(_WasmOutputFileName)" />

<Message Text="Running wasm-opt with --strip-target-features --post-emscripten -O2 --low-memory-unused --zero-filled-memory --pass-arg=directize-initial-contents-immutable --mvp-features --enable-multivalue --enable-mutable-globals --enable-reference-types --enable-sign-ext --enable-simd --enable-exception-handling --enable-bulk-memory @(WasmOptConfigurationFlags, ' ')" Importance="High" />
<Exec Command="wasm-opt$(_ExeExt) --strip-target-features --post-emscripten -O2 --low-memory-unused --zero-filled-memory --pass-arg=directize-initial-contents-immutable --mvp-features --enable-multivalue --enable-mutable-globals --enable-reference-types --enable-sign-ext --enable-simd --enable-exception-handling --enable-bulk-memory @(WasmOptConfigurationFlags, ' ') &quot;$(_WasmIntermediateOutputPath)$(_WasmOutputFileName)&quot; -o &quot;$(_WasmIntermediateOutputPath)$(_WasmOutputFileName)&quot;"
<Message Text="Running wasm-opt with @(WasmOptConfigurationFlags, ' ')" Importance="High" />
<Exec Command="wasm-opt$(_ExeExt) @(WasmOptConfigurationFlags, ' ') &quot;$(_WasmIntermediateOutputPath)$(_WasmOutputFileName)&quot; -o &quot;$(_WasmIntermediateOutputPath)$(_WasmOutputFileName)&quot;"
IgnoreStandardErrorWarningFormat="true"
EnvironmentVariables="@(WasmToolchainEnvVars)" />
</Target>
Expand Down
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