rjmccall added inline comments.
================
Comment at: include/clang/Basic/Attr.td:1191
+def MipsLongCall : InheritableAttr, TargetSpecificAttr<TargetMips> {
+ let Spellings = [GCC<"long_call">, GCC<"far">, GCC<"near">];
----------------
Because this is used for all three attributes, I think you should call it
something more general. Perhaps MipsCallStyle?
================
Comment at: include/clang/Basic/Attr.td:1195
+ let Accessors = [Accessor<"longCall", [GCC<"long_call">, GCC<"far">]>,
+ Accessor<"nearCall", [GCC<"near">]>];
+ let Documentation = [MipsLongCallDocs];
----------------
This is not the standard naming convention for accessors. I suggest
isLongCall() and isNearCall().
================
Comment at: include/clang/Basic/AttrDocs.td:1336
+if code compiled using ``-mlong-calls`` switch, it forces compiler to use
+the ``jal`` instruction to call the function.
+ }];
----------------
I suggest the following wording:
Clang supports the ``__attribute__((long_call))``, ``__attribute__((far))``, and
``__attribute__((near))`` attributes on MIPS targets. These attributes may
only be
added to function declarations and change the code generated by the compiler
when
directly calling the function. The ``near`` attribute allows calls to the
function to
be made using the ``jal`` instruction, which requires the function to be
defined in the
same 256MB segment as the caller. The ``long_call`` and ``far`` attributes are
synonyms and require the use of a different call sequence that works regardless
of
the distance between the functions.
These attributes take priority over command line switches such as
``-mlong-calls``.
================
Comment at: lib/CodeGen/CGCall.cpp:1810
+ FuncAttrs.addAttribute("near-call");
+ }
+
----------------
You should really put this in TargetCodeGenInfo::setTargetAttributes. Please
just add a ForDefinition_t argument to that function and SetFunctionAttributes,
then call setTargetAttributes from SetFunctionAttributes.
================
Comment at: lib/Sema/SemaDeclAttr.cpp:5955
+ handleSimpleAttribute<MipsLongCallAttr>(S, D, Attr);
+ break;
case AttributeList::AT_AMDGPUFlatWorkGroupSize:
----------------
You need to check for conflicts between the different attributes, and please
add a test for that.
Repository:
rL LLVM
https://reviews.llvm.org/D35479
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