hack: define __EMSCRIPTEN__ when compiling to wasm

zhuowei · zhuowei · commit 7e41ca91d348 · 2019-06-08T14:24:55.000-07:00
Too lazy to backport the Emscripten target to this version of LLVM
diff --git a/lib/Basic/Targets/WebAssembly.cpp b/lib/Basic/Targets/WebAssembly.cpp
@@ -53,6 +53,8 @@ void WebAssemblyTargetInfo::fillValidCPUList(
 void WebAssemblyTargetInfo::getTargetDefines(const LangOptions &Opts,
                                              MacroBuilder &Builder) const {
   defineCPUMacros(Builder, "wasm", /*Tuning=*/false);
+  // HACK: too lazy to backport the -emscripten target here
+  Builder.defineMacro("__EMSCRIPTEN__");
   if (SIMDLevel >= SIMD128)
     Builder.defineMacro("__wasm_simd128__");
 }

Original file line number	Diff line number	Diff line change
`@@ -53,6 +53,8 @@ void WebAssemblyTargetInfo::fillValidCPUList(`
`53`	`53`	`void WebAssemblyTargetInfo::getTargetDefines(const LangOptions &Opts,`
`54`	`54`	`MacroBuilder &Builder) const {`
`55`	`55`	`defineCPUMacros(Builder, "wasm", /Tuning=/false);`
	`56`	`+ // HACK: too lazy to backport the -emscripten target here`
	`57`	`+ Builder.defineMacro("__EMSCRIPTEN__");`
`56`	`58`	`if (SIMDLevel >= SIMD128)`
`57`	`59`	`Builder.defineMacro("__wasm_simd128__");`
`58`	`60`	`}`