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bpo-35059 : Add /Ob1 flag when building pythoncore in debug mode #10094

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Merged
merged 1 commit into from
Oct 26, 2018
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bpo-35059 : Add /Ob1 flag when building pythoncore in debug mode #10094

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4 changes: 4 additions & 0 deletions Misc/NEWS.d/next/Build/2018-10-26-14-49-19.bpo-35059.PKsBxP.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
PCbuild: Set InlineFunctionExpansion to OnlyExplicitInline ("/Ob1" option)
in pyproject.props in Debug mode to expand functions marked as inline. This
change should make Python compiled in Debug mode a little bit faster on
Windows.
2 changes: 2 additions & 0 deletions PCbuild/pyproject.props
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Expand Up @@ -42,6 +42,8 @@
<SuppressStartupBanner>true</SuppressStartupBanner>
<WholeProgramOptimization>true</WholeProgramOptimization>
<EnableEnhancedInstructionSet Condition="'$(Platform)'=='Win32'">NoExtensions</EnableEnhancedInstructionSet>
<InlineFunctionExpansion Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">OnlyExplicitInline</InlineFunctionExpansion>
<InlineFunctionExpansion Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">OnlyExplicitInline</InlineFunctionExpansion>
</ClCompile>
<ClCompile Condition="$(Configuration) == 'Debug'">
<Optimization>Disabled</Optimization>
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