[Bug 93681] GLSL compilation can be very slow

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93681

--- Comment #8 from Eero Tamminen <eero.t.tamminen at intel.com> ---
On Intel, "perf" says following of the slow shader compilation:

# Cost  Object       Symbol                                           
# ....  ...........  .................... 
20.59%  i965_dri.so  brw::fs_live_variables::compute_start_end
17.71%  i965_dri.so  ra_allocate
 8.73%  i965_dri.so  brw::fs_live_variables::compute_live_variables
 8.67%  i965_dri.so  fs_visitor::virtual_grf_interferes
 7.53%  i965_dri.so  ra_add_node_adjacency
 4.95%  i965_dri.so  fs_visitor::assign_regs
 2.50%  i965_dri.so  decrement_q.isra.2
 2.47%  i965_dri.so  fs_visitor::opt_copy_propagate
 2.32%  libc-2.23.so __libc_calloc
 2.00%  i965_dri.so  ra_add_node_interference
 1.94%  libc-2.23.so _int_malloc       
 1.79%  libc-2.23.so _int_free
...

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