================
@@ -470,8 +470,16 @@ static void InitializeStandardPredefinedMacros(const
TargetInfo &TI,
if (LangOpts.CPlusPlus26)
// FIXME: Use correct value for C++26.
Builder.defineMacro("__cplusplus", "202400L");
- else if (LangOpts.CPlusPlus23)
+ else if (LangOpts.CPlusPlus23) {
Builder.defineMacro("__cplusplus", "202302L");
+ // [C++23] 15.11p2 [cpp.predefined]
+ if (TI.hasFloat16Type()) {
+ Builder.defineMacro("__STDCPP_FLOAT16_T__", "1");
+ }
+ if (TI.hasFullBFloat16Type()) {
+ Builder.defineMacro("__STDCPP_BFLOAT16_T__", "1");
+ }
----------------
frederick-vs-ja wrote:
They will get defined in C++26 mode. `LangOpts.CPlusPlus23` means "C++23 and
later", not simply "C++23".
Although I think it will make a bit more sense to define these macros in all
modes.
https://github.com/llvm/llvm-project/pull/78503
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