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Investigate regressions from simplifier refactor

Commit 33452dfc (Refactor the Mighty Simplifier) caused test suite regressions under 64-bit Linux and OSX (but not 32-bit Linux or Windows). See the build results.

Under 64-bit Linux:

max_bytes_used value is too high:
    Expected    T1969(normal) max_bytes_used: 16679176 +/-15%
    Lower bound T1969(normal) max_bytes_used: 14177299 
    Upper bound T1969(normal) max_bytes_used: 19181053 
    Actual      T1969(normal) max_bytes_used: 19199872 
    Deviation   T1969(normal) max_bytes_used:     15.1 %
*** unexpected stat test failure for T1969(normal)
bytes allocated value is too high:
    Expected    T12150(optasm) bytes allocated: 70773000 +/-5%
    Lower bound T12150(optasm) bytes allocated: 67234350 
    Upper bound T12150(optasm) bytes allocated: 74311650 
    Actual      T12150(optasm) bytes allocated: 74358208 
Deviation T12150(optasm) bytes allocated: 5.1 %

Under 64-bit OSX:

bytes allocated value is too high:
    Expected    T12150(optasm) bytes allocated: 70773000 +/-5%
    Lower bound T12150(optasm) bytes allocated: 67234350 
    Upper bound T12150(optasm) bytes allocated: 74311650 
    Actual      T12150(optasm) bytes allocated: 74503808 
    Deviation   T12150(optasm) bytes allocated:      5.3 %
*** unexpected stat test failure for T12150(optasm)
Trac metadata
Trac field Value
Version 8.3
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC simonpj
Operating system
Architecture
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