Commit Graph

6 Commits

Author SHA1 Message Date
Vedant Kumar c74026daf3 [HotColdSplit] Mark entire function cold when entry block is cold
rdar://58855712
2020-02-17 15:57:50 -08:00
Eric Christopher cee313d288 Revert "Temporarily Revert "Add basic loop fusion pass.""
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
2019-04-17 04:52:47 +00:00
Eric Christopher a863435128 Temporarily Revert "Add basic loop fusion pass."
As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546
2019-04-17 02:12:23 +00:00
Vedant Kumar 73522d1678 [HotColdSplit] Disable splitting for sanitized functions
Splitting can make sanitizer errors harder to understand, as the
trapping instruction may not be in the function where the bug was
detected.

rdar://48142697

llvm-svn: 354931
2019-02-26 22:55:46 +00:00
Vedant Kumar b755a2df51 [HotColdSplit] Mark inherently cold functions as such
If an inherently cold function is found, mark it as cold. For now this
means applying the `cold` and `minsize` attributes.

As a drive-by, revisit and clean up the criteria for considering a
function for splitting. Add tests.

llvm-svn: 351623
2019-01-19 02:38:47 +00:00
Vedant Kumar 32a014d048 [HotColdSplit] Simplify tests by lowering their splitting thresholds
This gets rid of the brittle/mysterious calls to @sink()/@sideeffect()
peppered throughout the test cases. They are no longer needed to force
splitting to occur.

llvm-svn: 351480
2019-01-17 21:29:34 +00:00