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Re: [PATCH][AArch64] Use builtins for fpcr/fpsr

From: Szabolcs Nagy <szabolcs dot nagy at arm dot com>
To: Wilco Dijkstra <Wilco dot Dijkstra at arm dot com>, "libc-alpha at sourceware dot org" <libc-alpha at sourceware dot org>
Cc: nd at arm dot com
Date: Fri, 9 Feb 2018 16:54:28 +0000
Subject: Re: [PATCH][AArch64] Use builtins for fpcr/fpsr
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On 09/02/18 15:03, Wilco Dijkstra wrote:

Since GCC has support for accessing FPSR/FPCR, use them when possible
so that the asm instructions can be removed eventually.  Although GCC 5
supports the builtins, it has an optimization bug, so use them from GCC 6
onwards.

GLIBC build and test OK.

ChangeLog:
2018-01-19  Wilco Dijkstra  <wdijkstr@arm.com>

         * sysdeps/aarch64/fpu/fpu_control.h: Use builtins for accessing FPCR/FPSR.


ok to commit.

References:
- Re: [PATCH][AArch64] Use builtins for fpcr/fpsr
  - From: Wilco Dijkstra

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