[WebAssembly] Add a __wasi__ target macro
This adds a `__wasi__` macro for the wasi OS, similar to `__linux__` etc. for
other OS's.
Differential Revision: https://reviews.llvm.org/D57155
llvm-svn: 352105
diff --git a/clang/lib/Basic/Targets/OSTargets.h b/clang/lib/Basic/Targets/OSTargets.h
index 7fe3ca9..c8d4aaa 100644
--- a/clang/lib/Basic/Targets/OSTargets.h
+++ b/clang/lib/Basic/Targets/OSTargets.h
@@ -763,8 +763,9 @@
template <typename Target>
class LLVM_LIBRARY_VISIBILITY WebAssemblyOSTargetInfo
: public OSTargetInfo<Target> {
+protected:
void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
- MacroBuilder &Builder) const final {
+ MacroBuilder &Builder) const {
// A common platform macro.
if (Opts.POSIXThreads)
Builder.defineMacro("_REENTRANT");
@@ -785,6 +786,21 @@
}
};
+// WASI target
+template <typename Target>
+class LLVM_LIBRARY_VISIBILITY WASITargetInfo
+ : public WebAssemblyOSTargetInfo<Target> {
+ void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
+ MacroBuilder &Builder) const final {
+ WebAssemblyOSTargetInfo<Target>::getOSDefines(Opts, Triple, Builder);
+ Builder.defineMacro("__wasi__");
+ }
+
+public:
+ explicit WASITargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
+ : WebAssemblyOSTargetInfo<Target>(Triple, Opts) {}
+};
+
} // namespace targets
} // namespace clang
#endif // LLVM_CLANG_LIB_BASIC_TARGETS_OSTARGETS_H