[LLVMbugs] [Bug 1423] DSE is really slow on this input

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Fri Jan 24 11:28:35 PST 2014


http://llvm.org/bugs/show_bug.cgi?id=1423

Bill Wendling <isanbard at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #16 from Bill Wendling <isanbard at gmail.com> ---
Marking this as "fixed" again. I'll also upload a .ll file so that it can be
reproduced if necessary.

===-------------------------------------------------------------------------===
                      ... Pass execution timing report ...
===-------------------------------------------------------------------------===
  Total Execution Time: 0.6507 seconds (0.6710 wall clock)

   ---User Time---   --System Time--   --User+System--   ---Wall Time---  ---
Name ---
   0.1882 ( 29.7%)   0.0005 (  2.8%)   0.1887 ( 29.0%)   0.1887 ( 28.1%)  Dead
Store Elimination
   0.1508 ( 23.8%)   0.0019 ( 10.8%)   0.1527 ( 23.5%)   0.1536 ( 22.9%) 
Global Value Numbering
   0.0231 (  3.6%)   0.0015 (  8.8%)   0.0246 (  3.8%)   0.0307 (  4.6%) 
Combine redundant instructions
   0.0283 (  4.5%)   0.0020 ( 11.4%)   0.0303 (  4.7%)   0.0303 (  4.5%)  Value
Propagation
   0.0292 (  4.6%)   0.0006 (  3.3%)   0.0298 (  4.6%)   0.0298 (  4.4%)  Value
Propagation

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