[Patch ARM 4/4] Enable _Float16

Joseph Myers joseph@codesourcery.com
Mon Oct 24 22:29:00 GMT 2016

On Mon, 24 Oct 2016, James Greenhalgh wrote:

> Hi,
> Finally, having added support for single-step DFmode to HFmode conversions,
> this patch adds support for _Float16 to the ARM back-end.

Given the need for -mfp16-format=ieee (on some processors), you should be 
updating target-supports.exp:add_options_for_float16 to add that option in 
the ARM case, and make sure that the tests run in cases where the option 
is needed to enable support for this format.

> That means making sure that only __fp16 promotes and adding similar hooks to
> those used in the AArch64 port giving the excess precision rules, and
> marking HFmode as supported in libgcc.

Does "supported in libgcc" mean this patch completes fixing bug 63250?

Joseph S. Myers

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