https://bugs.llvm.org/show_bug.cgi?id=35110
Bug ID: 35110
Summary: [LazyCallGraph][Inliner] Large compile-time slow down
when using new pass manager
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Interprocedural Analyses
Assignee: unassignedb...@nondot.org
Reporter: mcros...@codeaurora.org
CC: llvm-bugs@lists.llvm.org
While testing the new pass manager we identified a case where one input file
regressed in compile-time by ~548x.
The primary issue appears to be the call to
LazyCallGraph::RefSCC::insertTrivialRefEdge() in the Inliner. If the verify()
call is removed from insertTrivialRefEdge() the regression is greatly reduced.
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