[Bug tree-optimization/36291] New: GCC is slow and memory-hungry building sipQtGuipart.cpp

["rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Testcase is from PR30052:

http://gcc.gnu.org/bugzilla/attachment.cgi?id=13678

current GCC 4.3 branch gives us a peak memory usage of 1.8GB on x86_64 and

 tree find ref. vars   :  15.36 ( 5%) usr   0.80 ( 8%) sys  15.90 ( 5%) wall 
817801 kB (35%) ggc
 tree alias analysis   :  16.27 ( 5%) usr   0.38 ( 4%) sys  16.11 ( 5%) wall  
11037 kB ( 0%) ggc
 tree call clobbering  :  41.35 (14%) usr   0.28 ( 3%) sys  43.00 (14%) wall   
3132 kB ( 0%) ggc
 tree flow insensitive alias:  31.26 (10%) usr   0.34 ( 3%) sys  31.94 (10%)
wall       0 kB ( 0%) ggc
 tree memory partitioning:  83.32 (28%) usr   0.89 ( 9%) sys  84.36 (27%) wall 
   974 kB ( 0%) ggc
 tree SSA incremental  :  10.60 ( 4%) usr   0.17 ( 2%) sys  11.11 ( 4%) wall  
15755 kB ( 1%) ggc
 tree operand scan     :  28.71 (10%) usr   0.57 ( 6%) sys  29.59 ( 9%) wall 
160271 kB ( 7%) ggc
 TOTAL                 : 301.74             9.75           314.50           
2354835 kB


-- 
           Summary: GCC is slow and memory-hungry building sipQtGuipart.cpp
           Product: gcc
           Version: 4.3.1
            Status: UNCONFIRMED
          Keywords: memory-hog, compile-time-hog
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rguenth at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36291