Opened 2 years ago

#14281 new bug

Minor regressions from removal of non-linear behavior from simplifier

Reported by: dfeuer Owned by:
Priority: low Milestone:
Component: Compiler Version: 8.2.1
Keywords: Cc:
Operating System: Unknown/Multiple Architecture: Unknown/Multiple
Type of failure: Compile-time performance bug Test Case:
Blocked By: Blocking:
Related Tickets: #13397 Differential Rev(s):
Wiki Page:


#13379 exposed non-linear behavior simplifying certain nested function applications. Simon PJ fixed that in a1b753e8b1475659440f524b3e66dfbea31c5787, and then made an adjustment in 29d88ee173bc9b04245a33d5268dda032f5dc331. Gipeda revealed a couple of small regressions from this combination (I'm not sure which did what, but IIRC the second patch mostly fixed regressions in the first).

nofib/time/cryptarithm1   time increases 4.87% from 0.513s to 0.538s
nofib/size/scs            code size increases  5.28% from 1224890 bytes to 1289570 bytes

Note that there are a few comments on #13397 relating to these regressions.

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