Thanks.
If I remove some specific attributes, now I can think of the following
method.First of all, let me talk about my method.
1.Define target platforms that do not support attributes.such as def
TargetPower : TargetArch<["ppc", "ppc64", "ppc64le"]>;
2.Define TargetNotSupportedAttr class.such as class
TargetNotSupportedAttr<TargetArch target> ;
3.Using this approach, we need to modify the
cfe-4.0.1.src/utils/TableGen/ClangAttrEmitter.cpp file.Modifying the code in
the GenerateHasAttrSpellingStringSwitch function looks like this:
if(Attr->isSubClassOf("TargetNotSupportedAttr")) { // add
#define GenerateTargetNotSupportedAttrChecks GenerateTargetSpecificAttrChecks
// add
const Record *R = Attr->getValueAsDef("Target"); // add
std::vector<std::string> Arches = R->getValueAsListOfStrings("Arches");
// add
GenerateTargetNotSupportedAttrChecks(R, Arches, Test, nullptr); //
add
TestStr = !Test.empty() ? Test + " ? " + " 0 :" +
llvm::itostr(Version) : "0"; // add
} else if (Attr->isSubClassOf("TargetSpecificAttr"))
4.And for classes that inherit from TargetNotSupportedAttr<> class, we don??t
need to generate the attribute class, so add the following code in
EmitClangAttrClass
if (R->getName() != "TargetSpecificAttr" &&
R->getName() != "TargetNotSupportedAttr?? && //add
SuperName.empty())
SuperName = R->getName();
If I use this method, is it correct?
------------------ ???????? ------------------
??????: "Aaron Ballman"<aa...@aaronballman.com>;
????????: 2018??4??29??(??????) ????3:07
??????: "????"<772847...@qq.com>;
????: "cfe-commits"<cfe-commits@lists.llvm.org>;
????: Re: If I want to disable certain attributes, such as "swiftcall", isthere
any way to do it now?
On Fri, Apr 27, 2018 at 11:23 PM, ???? via cfe-commits
<cfe-commits@lists.llvm.org> wrote:
> As the title says,thanks.
You could build a custom clang with specific attributes removed, but
there are no compiler flags that allow you to disable arbitrary
attributes like swiftcall.
~Aaron
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