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[Clang][NFC] clang-format __has_builtin implementation #126571

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merged 1 commit into from
Feb 10, 2025
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[Clang][NFC] clang-format __has_builtin implementation #126571

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95 changes: 48 additions & 47 deletions clang/lib/Lex/PPMacroExpansion.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1798,54 +1798,55 @@ void Preprocessor::ExpandBuiltinMacro(Token &Tok) {
return II && HasExtension(*this, II->getName());
});
} else if (II == Ident__has_builtin) {
EvaluateFeatureLikeBuiltinMacro(OS, Tok, II, *this, false,
[this](Token &Tok, bool &HasLexedNextToken) -> int {
IdentifierInfo *II = ExpectFeatureIdentifierInfo(Tok, *this,
diag::err_feature_check_malformed);
if (!II)
return false;
else if (II->getBuiltinID() != 0) {
switch (II->getBuiltinID()) {
case Builtin::BI__builtin_cpu_is:
return getTargetInfo().supportsCpuIs();
case Builtin::BI__builtin_cpu_init:
return getTargetInfo().supportsCpuInit();
case Builtin::BI__builtin_cpu_supports:
return getTargetInfo().supportsCpuSupports();
case Builtin::BI__builtin_operator_new:
case Builtin::BI__builtin_operator_delete:
// denotes date of behavior change to support calling arbitrary
// usual allocation and deallocation functions. Required by libc++
return 201802;
default:
return Builtin::evaluateRequiredTargetFeatures(
getBuiltinInfo().getRequiredFeatures(II->getBuiltinID()),
getTargetInfo().getTargetOpts().FeatureMap);
EvaluateFeatureLikeBuiltinMacro(
OS, Tok, II, *this, false,
[this](Token &Tok, bool &HasLexedNextToken) -> int {
IdentifierInfo *II = ExpectFeatureIdentifierInfo(
Tok, *this, diag::err_feature_check_malformed);
if (!II)
return false;
else if (II->getBuiltinID() != 0) {
switch (II->getBuiltinID()) {
case Builtin::BI__builtin_cpu_is:
return getTargetInfo().supportsCpuIs();
case Builtin::BI__builtin_cpu_init:
return getTargetInfo().supportsCpuInit();
case Builtin::BI__builtin_cpu_supports:
return getTargetInfo().supportsCpuSupports();
case Builtin::BI__builtin_operator_new:
case Builtin::BI__builtin_operator_delete:
// denotes date of behavior change to support calling arbitrary
// usual allocation and deallocation functions. Required by libc++
return 201802;
default:
return Builtin::evaluateRequiredTargetFeatures(
getBuiltinInfo().getRequiredFeatures(II->getBuiltinID()),
getTargetInfo().getTargetOpts().FeatureMap);
}
return true;
} else if (IsBuiltinTrait(Tok)) {
return true;
} else if (II->getTokenID() != tok::identifier &&
II->getName().starts_with("__builtin_")) {
return true;
} else {
return llvm::StringSwitch<bool>(II->getName())
// Report builtin templates as being builtins.
.Case("__make_integer_seq", getLangOpts().CPlusPlus)
.Case("__type_pack_element", getLangOpts().CPlusPlus)
.Case("__builtin_common_type", getLangOpts().CPlusPlus)
// Likewise for some builtin preprocessor macros.
// FIXME: This is inconsistent; we usually suggest detecting
// builtin macros via #ifdef. Don't add more cases here.
.Case("__is_target_arch", true)
.Case("__is_target_vendor", true)
.Case("__is_target_os", true)
.Case("__is_target_environment", true)
.Case("__is_target_variant_os", true)
.Case("__is_target_variant_environment", true)
.Default(false);
}
return true;
} else if (IsBuiltinTrait(Tok)) {
return true;
} else if (II->getTokenID() != tok::identifier &&
II->getName().starts_with("__builtin_")) {
return true;
} else {
return llvm::StringSwitch<bool>(II->getName())
// Report builtin templates as being builtins.
.Case("__make_integer_seq", getLangOpts().CPlusPlus)
.Case("__type_pack_element", getLangOpts().CPlusPlus)
.Case("__builtin_common_type", getLangOpts().CPlusPlus)
// Likewise for some builtin preprocessor macros.
// FIXME: This is inconsistent; we usually suggest detecting
// builtin macros via #ifdef. Don't add more cases here.
.Case("__is_target_arch", true)
.Case("__is_target_vendor", true)
.Case("__is_target_os", true)
.Case("__is_target_environment", true)
.Case("__is_target_variant_os", true)
.Case("__is_target_variant_environment", true)
.Default(false);
}
});
});
} else if (II == Ident__has_constexpr_builtin) {
EvaluateFeatureLikeBuiltinMacro(
OS, Tok, II, *this, false,
Expand Down