RFR: JDK-8217723 Switch ld from bfd to gold on gcc toolchain

[Andrew Haley]

On 1/25/19 2:39 PM, Andrew Haley wrote:
> Massive win for gold here, on my (very old) AArch64 system:

And on another, faster AArch64 system:

BFD linker:

real	0m14.532s
user	0m13.070s
sys	0m1.419s

gold, single-threaded:

real	0m6.313s
user	0m6.123s
sys	0m0.190s

gold, multi-threaded:

real	0m4.129s
user	0m8.724s
sys	0m1.741s

Verdict: yes, please!

-- 
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
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