[llvm-bugs] [Bug 45253] New: [NewPM] Quadratic IR size and compile time
via llvm-bugs
llvm-bugs at lists.llvm.org
Thu Mar 19 10:41:38 PDT 2020
https://bugs.llvm.org/show_bug.cgi?id=45253
Bug ID: 45253
Summary: [NewPM] Quadratic IR size and compile time
Product: new-bugs
Version: unspecified
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
Assignee: unassignedbugs at nondot.org
Reporter: dmajor at mozilla.com
CC: chandlerc at gmail.com, htmldeveloper at gmail.com,
jmuizelaar at mozilla.com, llvm-bugs at lists.llvm.org
We have a case where the new pass manager takes much longer to compile than the
legacy pass manager: https://godbolt.org/z/QHjbwq
Under the new PM, b's copy constructor has tons of allocas that appear to grow
quadratically with the number of smartptr members in a.
Oddly enough we only see it on the x86_64-apple-darwin target.
--
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20200319/f5c56186/attachment.html>
More information about the llvm-bugs
mailing list