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3 Commits

Author SHA1 Message Date
Fabian Parzefall
48ff38ce5d [BOLT] Add randomN split strategy 
This adds a strategy to split functions into a random number of
fragments at randomly chosen split points.

Reviewed By: rafauler

Differential Revision: https://reviews.llvm.org/D130647
 2022-08-18 21:55:07 -07:00
Fabian Parzefall
f428db7a00 [BOLT] Add split all blocks strategy 
This adds a function splitting strategy that splits each outlineable
basic block into its own fragment. This is exposed through a new command
line option `--split-strategy`.

Reviewed By: rafauler

Differential Revision: https://reviews.llvm.org/D129827
 2022-08-18 21:55:07 -07:00
Fabian Parzefall
e341e9f094 [BOLT] Add option to randomize function split point 
For test purposes, we want to split functions at a random split point
to be able to test different layouts without relying on the profile.
This patch introduces an option, that randomly chooses a split point
to partition blocks of a function into hot and cold regions.

Reviewed By: Amir, yota9

Differential Revision: https://reviews.llvm.org/D128773
 2022-06-29 13:02:05 -07:00