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-rw-r--r--contrib/llvm-project/clang/include/clang/Basic/Builtins.h107
1 files changed, 79 insertions, 28 deletions
diff --git a/contrib/llvm-project/clang/include/clang/Basic/Builtins.h b/contrib/llvm-project/clang/include/clang/Basic/Builtins.h
index cdaaee48c32d..3fd5b02b5aa5 100644
--- a/contrib/llvm-project/clang/include/clang/Basic/Builtins.h
+++ b/contrib/llvm-project/clang/include/clang/Basic/Builtins.h
@@ -16,6 +16,8 @@
#define LLVM_CLANG_BASIC_BUILTINS_H
#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/StringRef.h"
#include <cstring>
// VC++ defines 'alloca' as an object-like macro, which interferes with our
@@ -27,21 +29,35 @@ class TargetInfo;
class IdentifierTable;
class LangOptions;
-enum LanguageID {
- GNU_LANG = 0x1, // builtin requires GNU mode.
- C_LANG = 0x2, // builtin for c only.
- CXX_LANG = 0x4, // builtin for cplusplus only.
- OBJC_LANG = 0x8, // builtin for objective-c and objective-c++
- MS_LANG = 0x10, // builtin requires MS mode.
- OCLC20_LANG = 0x20, // builtin for OpenCL C 2.0 only.
- OCLC1X_LANG = 0x40, // builtin for OpenCL C 1.x only.
- OMP_LANG = 0x80, // builtin requires OpenMP.
- CUDA_LANG = 0x100, // builtin requires CUDA.
- COR_LANG = 0x200, // builtin requires use of 'fcoroutine-ts' option.
+enum LanguageID : uint16_t {
+ GNU_LANG = 0x1, // builtin requires GNU mode.
+ C_LANG = 0x2, // builtin for c only.
+ CXX_LANG = 0x4, // builtin for cplusplus only.
+ OBJC_LANG = 0x8, // builtin for objective-c and objective-c++
+ MS_LANG = 0x10, // builtin requires MS mode.
+ OMP_LANG = 0x20, // builtin requires OpenMP.
+ CUDA_LANG = 0x40, // builtin requires CUDA.
+ COR_LANG = 0x80, // builtin requires use of 'fcoroutine-ts' option.
+ OCL_GAS = 0x100, // builtin requires OpenCL generic address space.
+ OCL_PIPE = 0x200, // builtin requires OpenCL pipe.
+ OCL_DSE = 0x400, // builtin requires OpenCL device side enqueue.
+ ALL_OCL_LANGUAGES = 0x800, // builtin for OCL languages.
+ HLSL_LANG = 0x1000, // builtin requires HLSL.
ALL_LANGUAGES = C_LANG | CXX_LANG | OBJC_LANG, // builtin for all languages.
ALL_GNU_LANGUAGES = ALL_LANGUAGES | GNU_LANG, // builtin requires GNU mode.
- ALL_MS_LANGUAGES = ALL_LANGUAGES | MS_LANG, // builtin requires MS mode.
- ALL_OCLC_LANGUAGES = OCLC1X_LANG | OCLC20_LANG // builtin for OCLC languages.
+ ALL_MS_LANGUAGES = ALL_LANGUAGES | MS_LANG // builtin requires MS mode.
+};
+
+struct HeaderDesc {
+ enum HeaderID : uint16_t {
+#define HEADER(ID, NAME) ID,
+#include "clang/Basic/BuiltinHeaders.def"
+#undef HEADER
+ } ID;
+
+ constexpr HeaderDesc(HeaderID ID) : ID(ID) {}
+
+ const char *getName() const;
};
namespace Builtin {
@@ -53,9 +69,11 @@ enum ID {
};
struct Info {
- const char *Name, *Type, *Attributes, *HeaderName;
- LanguageID Langs;
+ llvm::StringLiteral Name;
+ const char *Type, *Attributes;
const char *Features;
+ HeaderDesc Header;
+ LanguageID Langs;
};
/// Holds information about both target-independent and
@@ -69,7 +87,7 @@ class Context {
llvm::ArrayRef<Info> AuxTSRecords;
public:
- Context() {}
+ Context() = default;
/// Perform target-specific initialization
/// \param AuxTarget Target info to incorporate builtins from. May be nullptr.
@@ -82,9 +100,7 @@ public:
/// Return the identifier name for the specified builtin,
/// e.g. "__builtin_abs".
- const char *getName(unsigned ID) const {
- return getRecord(ID).Name;
- }
+ llvm::StringRef getName(unsigned ID) const { return getRecord(ID).Name; }
/// Get the type descriptor string for the specified builtin.
const char *getTypeString(unsigned ID) const {
@@ -137,6 +153,10 @@ public:
/// Determines whether this builtin is a predefined libc/libm
/// function, such as "malloc", where we know the signature a
/// priori.
+ /// In C, such functions behave as if they are predeclared,
+ /// possibly with a warning on first use. In Objective-C and C++,
+ /// they do not, but they are recognized as builtins once we see
+ /// a declaration.
bool isPredefinedLibFunction(unsigned ID) const {
return strchr(getRecord(ID).Attributes, 'f') != nullptr;
}
@@ -155,6 +175,23 @@ public:
return strchr(getRecord(ID).Attributes, 'i') != nullptr;
}
+ /// Determines whether this builtin is a C++ standard library function
+ /// that lives in (possibly-versioned) namespace std, possibly a template
+ /// specialization, where the signature is determined by the standard library
+ /// declaration.
+ bool isInStdNamespace(unsigned ID) const {
+ return strchr(getRecord(ID).Attributes, 'z') != nullptr;
+ }
+
+ /// Determines whether this builtin can have its address taken with no
+ /// special action required.
+ bool isDirectlyAddressable(unsigned ID) const {
+ // Most standard library functions can have their addresses taken. C++
+ // standard library functions formally cannot in C++20 onwards, and when
+ // we allow it, we need to ensure we instantiate a definition.
+ return isPredefinedLibFunction(ID) && !isInStdNamespace(ID);
+ }
+
/// Determines whether this builtin has custom typechecking.
bool hasCustomTypechecking(unsigned ID) const {
return strchr(getRecord(ID).Attributes, 't') != nullptr;
@@ -183,7 +220,7 @@ public:
/// If this is a library function that comes from a specific
/// header, retrieve that header name.
const char *getHeaderName(unsigned ID) const {
- return getRecord(ID).HeaderName;
+ return getRecord(ID).Header.getName();
}
/// Determine whether this builtin is like printf in its
@@ -203,13 +240,18 @@ public:
llvm::SmallVectorImpl<int> &Encoding) const;
/// Return true if this function has no side effects and doesn't
- /// read memory, except for possibly errno.
+ /// read memory, except for possibly errno or raising FP exceptions.
///
- /// Such functions can be const when the MathErrno lang option is disabled.
- bool isConstWithoutErrno(unsigned ID) const {
+ /// Such functions can be const when the MathErrno lang option and FP
+ /// exceptions are disabled.
+ bool isConstWithoutErrnoAndExceptions(unsigned ID) const {
return strchr(getRecord(ID).Attributes, 'e') != nullptr;
}
+ bool isConstWithoutExceptions(unsigned ID) const {
+ return strchr(getRecord(ID).Attributes, 'g') != nullptr;
+ }
+
const char *getRequiredFeatures(unsigned ID) const {
return getRecord(ID).Features;
}
@@ -233,19 +275,28 @@ public:
/// for non-builtins.
bool canBeRedeclared(unsigned ID) const;
+ /// Return true if this function can be constant evaluated by Clang frontend.
+ bool isConstantEvaluated(unsigned ID) const {
+ return strchr(getRecord(ID).Attributes, 'E') != nullptr;
+ }
+
private:
const Info &getRecord(unsigned ID) const;
- /// Is this builtin supported according to the given language options?
- bool builtinIsSupported(const Builtin::Info &BuiltinInfo,
- const LangOptions &LangOpts);
-
/// Helper function for isPrintfLike and isScanfLike.
bool isLike(unsigned ID, unsigned &FormatIdx, bool &HasVAListArg,
const char *Fmt) const;
};
-}
+/// Returns true if the required target features of a builtin function are
+/// enabled.
+/// \p TargetFeatureMap maps a target feature to true if it is enabled and
+/// false if it is disabled.
+bool evaluateRequiredTargetFeatures(
+ llvm::StringRef RequiredFatures,
+ const llvm::StringMap<bool> &TargetFetureMap);
+
+} // namespace Builtin
/// Kinds of BuiltinTemplateDecl.
enum BuiltinTemplateKind : int {
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 19:07:37 +0000