http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54114
Bug #: 54114
Summary: variable-tracking performance regression from
4.8-20120610 to 4.8-20120701
Classification: Unclassified
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: [email protected]
ReportedBy: [email protected]
Compiling the XPath.cpp from xalanc shows significant performance regression
because of variable tracking, between GCC 4.8-20120610 to 4.8-20120701.
Tracking it down is hard since var-tracking.c changed a lot in the past month,
CC'ing lxo for better ideas. :-)
It seems to apply mostly to C++ code, see the graph and the last annotation at
http://teras-ics.mooo.com:8003/
