[PATCH] D15524: [GCC] Attribute ifunc support in clang

Eric Christopher via cfe-commits cfe-commits at lists.llvm.org
Thu Apr 7 15:20:24 PDT 2016

echristo added inline comments.

Comment at: include/clang/Basic/AttrDocs.td:2371
@@ +2370,3 @@
+Not all targets support this attribute.  ELF targets support this attribute when using binutils v2.20.1 or higher and glibc v2.11.1 or higher.  Non-ELF targets currently do not support this attribute.
+  }];
rjmccall wrote:
> echristo wrote:
> > Probably better to say linux fwiw and not ELF.
> The validation code in Sema is checking for an ELF target.  If the restriction is more precise than that, then we should make a TargetInfo callback.  Do the BSDs and other ELF targets not use binutils/glibc?
We should make a TargetInfo callback. BSDs and other ELF targets aren't guaranteed to use binutils/glibc (some of them have even switched to llvm already) - and I don't know what the state of ifunc support on those architectures is.


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