[llvm] r198019 - [Mips] Does not take in account 'use-soft-float' attribute's value when

Eric Christopher echristo at gmail.com
Mon Sep 29 22:21:16 PDT 2014

On Mon, Sep 29, 2014 at 10:14 PM, Simon Atanasyan <simon at atanasyan.com> wrote:
> Hi Eric,
> The commit r198019 goes along with the r195124
> (http://llvm.org/viewvc/llvm-project?rev=195124&view=rev). The ideas
> was to remove mips16 hard/soft float handling from the Clang driver
> and make the backend responsible for all these tricks.
> I think the couple of these commits did not change the Clang behaviour
> and the problem you mention below always existed.

Yes. What I was getting at was that it papered over some bad behavior
and the testcase was incorrect. Not that the patch itself made things

Thanks for clarifying though. I think ToT should be pretty good for you.



> On Mon, Sep 29, 2014 at 11:18 AM, Eric Christopher <echristo at gmail.com> wrote:
>> Sorry for the thread necromancy here, but I don't think this patch is correct.
>> a) It's a bit confusing that you have bar_hf for the function with
>> use-soft-float set to true and vice versa for bar_sf, but
>> b) As far as I can recall, the stubs are only used for calling hard
>> float functions but the testcase currently tests that we emit it for
>> both.
>> c) The emission of the stubs should be dependent upon the subtarget
>> and the value of the soft-float on the function (which would be the
>> TM.Options.UseSoftFloat that is reset between each function, but only
>> in SelectionDAG or the version in the function attributes).
>> On Wed, Dec 25, 2013 at 9:00 AM, Simon Atanasyan <simon at atanasyan.com> wrote:
>>> Author: atanasyan
>>> Date: Wed Dec 25 11:00:27 2013
>>> New Revision: 198019
>>> URL: http://llvm.org/viewvc/llvm-project?rev=198019&view=rev
>>> Log:
>>> [Mips] Does not take in account 'use-soft-float' attribute's value when
>>> consider to generate stubs for mips16 hard-float mode.
> --
> Simon Atanasyan

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