[Bug rtl-optimization/42175] Slow compile and much memory use at -O1

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42175

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
      Known to work|                            |4.9.0
         Resolution|---                         |FIXED

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 4.9 will use about 800MB at -O1 and

 combiner                :   2.92 ( 4%) usr   0.02 ( 1%) sys   2.77 ( 4%) wall 
 56720 kB ( 4%) ggc
 integrated RA           :   4.87 ( 7%) usr   0.06 ( 3%) sys   4.87 ( 7%) wall 
138947 kB ( 9%) ggc
 LRA non-specific        :   2.45 ( 4%) usr   0.03 ( 1%) sys   2.49 ( 4%) wall 
 22036 kB ( 1%) ggc
 TOTAL                 :  66.46 

at -O2 memory usage stays the same but


 df reaching defs        :   7.16 ( 7%) usr   0.01 ( 0%) sys   6.93 ( 7%) wall 
     0 kB ( 0%) ggc
 df live regs            :   6.87 ( 7%) usr   0.04 ( 1%) sys   6.86 ( 7%) wall 
     0 kB ( 0%) ggc
 df live&initialized regs:   4.05 ( 4%) usr   0.00 ( 0%) sys   4.19 ( 4%) wall 
     0 kB ( 0%) ggc
 combiner                :   3.17 ( 3%) usr   0.04 ( 1%) sys   3.10 ( 3%) wall 
 61821 kB ( 3%) ggc
 integrated RA           :   5.77 ( 6%) usr   0.06 ( 2%) sys   5.95 ( 6%) wall 
139550 kB ( 7%) ggc
 LRA non-specific        :   2.49 ( 3%) usr   0.02 ( 1%) sys   2.48 ( 2%) wall 
 21955 kB ( 1%) ggc
 TOTAL                 :  97.65             2.67           100.30           
1881806 kB

I'd say FIXED.  Yay.