libgccjit 5.2 on Mac OSX Yosemite

[Dibyendu Majumdar]

Dave,

I was able to get the JIT compiler working on Mac OS X Yosemite using
your patch. Attached is the patched home-brew script I used.

When I reported the JIT compilation speed I reported earlier I forgot
to mention that I was running on SSD disks. With laptop hard disk
(5400 rpm) the JIT compiler is obviously even slower - the Lua Tests
that ran in 1 second in interpreted mode took 1648 seconds in JIT
mode. Timings below. I think that your work on getting rid of the
process invocations should be given highest priority as JIT
compilation times need to be improved significantly.

Interpreted mode:

test done on 13/08/2015, at 21:23:43
Lua 5.3
64-bit integers, 64-bit floats
cleaning all!!!!
......    ---- total memory: 60.0K, max memory: 2.7M ----
total time: 0.57s (wall time: 1s)


JIT mode:
testing date/time
test done on 13/08/2015, at 21:51:11
Lua 5.3
64-bit integers, 64-bit floats
cleaning all!!!!
......    ---- total memory: 59.9K, max memory: 2.7M ----
total time: 659.17s (wall time: 1648s)
-------------- next part --------------
A non-text attachment was scrubbed...
Name: gcc.rb
Type: text/x-ruby-script
Size: 9454 bytes
Desc: not available
URL: <http://gcc.gnu.org/pipermail/jit/attachments/20150101/fae93951/attachment.bin>