[SERVER-57085] investigate use -fpch-instantiate-templates for clang toolchain v4 Created: 20/May/21  Updated: 27/Oct/23  Resolved: 27/Oct/23

Status: Closed
Project: Core Server
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Improvement Priority: Major - P3
Reporter: Daniel Moody Assignee: [DO NOT ASSIGN] Backlog - Server Development Platform Team (SDP) (Inactive)
Resolution: Won't Do Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Assigned Teams:
Server Development Platform
Participants:

 Description   

In the PCH research project https://jira.mongodb.org/browse/PM-2150, some time was spent investigating another option which is said to produce slightly more gains. It was found to increase a single pch install-mongod target with clang 11 by almost 20%.

Related links:
https://www.phoronix.com/scan.php?page=news_item&px=LLVM-Clang-11-PCH-Instant-Temp
https://reviews.llvm.org/D69585


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