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[AArch64] Use builtins for fpcr/fpsr
authorWilco Dijkstra <wdijkstr@arm.com>
Fri, 9 Feb 2018 16:59:23 +0000 (16:59 +0000)
committerWilco Dijkstra <wdijkstr@arm.com>
Fri, 9 Feb 2018 16:59:23 +0000 (16:59 +0000)
commit3f8d9d58c59fdbe27301d0e18bfd426a5f2edf19
tree95b78c1df2253b5f48f278ed16d3692acdcc73detree
parent1f6676d7da1b7c864e9a5d59fe9162a88bd21952commit | diff
[AArch64] Use builtins for fpcr/fpsr

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.

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