diff options
| author | Vedant Kumar <vsk@apple.com> | 2020-10-13 21:35:29 +0000 |
|---|---|---|
| committer | Saleem Abdulrasool <compnerd@compnerd.org> | 2020-10-15 23:13:33 +0000 |
| commit | 273c299d5d649a0222fbde03c9a41e41913751b4 (patch) | |
| tree | 456aa82db51e5fd8a5b727ea33ab9beab955de44 /llvm/lib/Support/TargetParser.cpp | |
| parent | 609d765cd3b1a4f9558b654dbb1bc7c973f3408b (diff) | |
| download | llvm-273c299d5d649a0222fbde03c9a41e41913751b4.zip llvm-273c299d5d649a0222fbde03c9a41e41913751b4.tar.gz llvm-273c299d5d649a0222fbde03c9a41e41913751b4.tar.bz2 | |
[PM/CC1] Add -f[no-]split-cold-code CC1 option to toggle splitting
This patch adds -f[no-]split-cold-code CC1 options to clang. This allows
the splitting pass to be toggled on/off. The current method of passing
`-mllvm -hot-cold-split=true` to clang isn't ideal as it may not compose
correctly (say, with `-O0` or `-Oz`).
To implement the -fsplit-cold-code option, an attribute is applied to
functions to indicate that they may be considered for splitting. This
removes some complexity from the old/new PM pipeline builders, and
behaves as expected when LTO is enabled.
Co-authored by: Saleem Abdulrasool <compnerd@compnerd.org>
Differential Revision: https://reviews.llvm.org/D57265
Reviewed By: Aditya Kumar, Vedant Kumar
Reviewers: Teresa Johnson, Aditya Kumar, Fedor Sergeev, Philip Pfaffe, Vedant Kumar
Diffstat (limited to 'llvm/lib/Support/TargetParser.cpp')
0 files changed, 0 insertions, 0 deletions