zequanwu created this revision.
zequanwu added reviewers: xur, davidxl, rnk.
Herald added subscribers: cfe-commits, wenlei.
Herald added a project: clang.
zequanwu requested review of this revision.
This is intended to reduce the binary size of both phase 1 and phase 2 builds.
By compiling chrome on Windows (using -Os in both phases), the binary size of
phase 1 is reduced by 27.5% and binary size of phase 2 is reduced by 8.4%.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D91673
Files:
clang/lib/Frontend/InitPreprocessor.cpp
Index: clang/lib/Frontend/InitPreprocessor.cpp
===================================================================
--- clang/lib/Frontend/InitPreprocessor.cpp
+++ clang/lib/Frontend/InitPreprocessor.cpp
@@ -403,6 +403,11 @@
Builder.defineMacro("__STDCPP_DEFAULT_NEW_ALIGNMENT__",
Twine(TI.getNewAlign() / TI.getCharWidth()) +
TI.getTypeConstantSuffix(TI.getSizeType()));
+
+ // -- __STDCPP_THREADS__
+ // Defined, and has the value integer literal 1, if and only if a
+ // program can have more than one thread of execution.
+ Builder.defineMacro("__STDCPP_THREADS__", "1");
}
// In C11 these are environment macros. In C++11 they are only defined
Index: clang/lib/Frontend/InitPreprocessor.cpp
===================================================================
--- clang/lib/Frontend/InitPreprocessor.cpp
+++ clang/lib/Frontend/InitPreprocessor.cpp
@@ -403,6 +403,11 @@
Builder.defineMacro("__STDCPP_DEFAULT_NEW_ALIGNMENT__",
Twine(TI.getNewAlign() / TI.getCharWidth()) +
TI.getTypeConstantSuffix(TI.getSizeType()));
+
+ // -- __STDCPP_ÂTHREADS__
+ // Defined, and has the value integer literal 1, if and only if a
+ // program can have more than one thread of execution.
+ Builder.defineMacro("__STDCPP_ÂTHREADS__", "1");
}
// In C11 these are environment macros. In C++11 they are only defined
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