T783 regresses severely in allocations with new pattern match checker
The new pattern match checker (Phab:D1535) allocates 115% more than the previous checker on the T783 testcase,
bytes allocated value is too high:
Expected T783(normal) bytes allocated: 526230456 +/-10%
Lower bound T783(normal) bytes allocated: 473607410
Upper bound T783(normal) bytes allocated: 578853502
Actual T783(normal) bytes allocated: 1134085384
Deviation T783(normal) bytes allocated: 115.5 %
*** unexpected stat test failure for T783(normal)
I suspect this isn't avoidable as this testcase consists of nothing more than 500 guarded equations, so exercises the checker quite thoroughly. That being said, perhaps it's worth a closer look.
Trac metadata
Trac field | Value |
---|---|
Version | 7.10.2 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | gkaracha |
Operating system | |
Architecture |