[Patch ARM] Fix PR target/62098 - vcvt generation.

[Ramana Radhakrishnan <ramana dot radhakrishnan at arm dot com>]

Hi,

	This fixes the issue in PR target/62098 where the pattern is clearly 
bogus and it's not clear what I was thinking when I ok'd it.

The vcvt instruction in this form writes to it's source register and 
this should have been modelled correctly in the backend in this form 
rather than the bogus pattern that we managed to generate.

Tested cross on arm-none-linux-gnueabihf with no regressions, verified 
that the testcase from the bug report clearly DTRT. I haven't yet dealt 
with a testcase but that will follow suit.

Applied so far on trunk after cross-testing on armv7-a, neon, 
float-abi=hard, arm state and will backport to 4.9 after suitable 
testing there along with the afore mentioned testcase.

regards
Ramana

2014-08-12  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        PR target/62098
        * config/arm/vfp.md (*combine_vcvtf2i): Fix constraint.
        Remove unnecessary attributes.

Attachment: fix-pr62098.txt
Description: Text document