0000350: Build Clang with PGO

ID	Project	Category	View Status	Date Submitted	Last Update

0000350	AlmaLinux-9	clang	public	2022-12-29 03:34	2022-12-29 03:34

Reporter	zamazan4ik	Assigned To
Priority	normal	Severity	minor	Reproducibility	N/A
Status	new	Resolution	open

Summary	0000350: Build Clang with PGO
Description	LLVM supports building Clang with PGO (https://llvm.org/docs/HowToBuildWithPGO.html). Using PGO for compilers has a huge impact on compiler performance. E.g. many distros are already building GCC (which also supports PGO builds) with PGO. I think for the users would be beneficial to have faster Clang binaries. Locally I usually build my own Clang version. According to my tests, it could bring up to 20% performance. Additionally, you could consider using LLVM BOLT as an additional optimization step, but I guess it should be discussed in another issue after the PGO implementation.
Tags	No tags attached.

Date Modified	Username	Field	Change
2022-12-29 03:34	zamazan4ik	New Issue