Pull in r183926 from LLVM trunk:
Allow clang to build __clear_cache on ARM. __clear_cache is special. It needs no signature, but is a real function in compiler_rt or libgcc. Patch by Andrew Turner. This allows us to build the __clear_cache function in compiler-rt.
This commit is contained in:
parent
e6124a8a1a
commit
1f4f127b99
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=251790
@ -70,6 +70,8 @@
|
||||
// f -> this is a libc/libm function without the '__builtin_' prefix. It can
|
||||
// be followed by ':headername:' to state which header this function
|
||||
// comes from.
|
||||
// i -> this is a runtime library implemented function without the
|
||||
// '__builtin_' prefix. It will be implemented in compiter-rt or libgcc.
|
||||
// p:N: -> this is a printf-like function whose Nth argument is the format
|
||||
// string.
|
||||
// P:N: -> similar to the p:N: attribute, but the function is like vprintf
|
||||
|
@ -128,6 +128,13 @@ class Context {
|
||||
return strchr(GetRecord(ID).Attributes, 'f') != 0;
|
||||
}
|
||||
|
||||
/// \brief Determines whether this builtin is a predefined compiler-rt/libgcc
|
||||
/// function, such as "__clear_cache", where we know the signature a
|
||||
/// priori.
|
||||
bool isPredefinedRuntimeFunction(unsigned ID) const {
|
||||
return strchr(GetRecord(ID).Attributes, 'i') != 0;
|
||||
}
|
||||
|
||||
/// \brief Determines whether this builtin has custom typechecking.
|
||||
bool hasCustomTypechecking(unsigned ID) const {
|
||||
return strchr(GetRecord(ID).Attributes, 't') != 0;
|
||||
|
@ -15,4 +15,4 @@
|
||||
// The format of this database matches clang/Basic/Builtins.def.
|
||||
|
||||
// In libgcc
|
||||
BUILTIN(__clear_cache, "vv*v*", "")
|
||||
BUILTIN(__clear_cache, "vv*v*", "i")
|
||||
|
@ -15,7 +15,7 @@
|
||||
// The format of this database matches clang/Basic/Builtins.def.
|
||||
|
||||
// In libgcc
|
||||
BUILTIN(__clear_cache, "v.", "")
|
||||
BUILTIN(__clear_cache, "v.", "i")
|
||||
BUILTIN(__builtin_thread_pointer, "v*", "")
|
||||
|
||||
// Saturating arithmetic
|
||||
|
@ -8671,7 +8671,8 @@ Decl *Sema::ActOnStartOfFunctionDef(Scope *FnBodyScope, Decl *D) {
|
||||
|
||||
// Builtin functions cannot be defined.
|
||||
if (unsigned BuiltinID = FD->getBuiltinID()) {
|
||||
if (!Context.BuiltinInfo.isPredefinedLibFunction(BuiltinID)) {
|
||||
if (!Context.BuiltinInfo.isPredefinedLibFunction(BuiltinID) &&
|
||||
!Context.BuiltinInfo.isPredefinedRuntimeFunction(BuiltinID)) {
|
||||
Diag(FD->getLocation(), diag::err_builtin_definition) << FD;
|
||||
FD->setInvalidDecl();
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user