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| author | Reid Kleckner <rnk@google.com> | 2017-02-14 21:02:24 +0000 |
|---|---|---|
| committer | Reid Kleckner <rnk@google.com> | 2017-02-14 21:02:24 +0000 |
| commit | a622fc9bdf5f8674d29fc8d54907f9038eca8584 (patch) | |
| tree | 59708f7fee5e30ec29e338c2b33d5d312daaed67 /llvm/lib/Transforms/Utils/BasicBlockUtils.cpp | |
| parent | 398c5f57f946c4ea4156fc88508dc095f01826b7 (diff) | |
| download | bcm5719-llvm-a622fc9bdf5f8674d29fc8d54907f9038eca8584.tar.gz bcm5719-llvm-a622fc9bdf5f8674d29fc8d54907f9038eca8584.zip | |
[BranchFolding] Tail common all identical unreachable blocks
Summary:
Blocks ending in unreachable are typically cold because they end the
program or throw an exception, so merging them with other identical
blocks is usually profitable because it reduces the size of cold code.
MachineBlockPlacement generally does not arrange to fall through to such
blocks, so commoning these blocks will not introduce additional
unconditional branches.
Reviewers: hans, iteratee, haicheng
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D29153
llvm-svn: 295105
Diffstat (limited to 'llvm/lib/Transforms/Utils/BasicBlockUtils.cpp')
0 files changed, 0 insertions, 0 deletions
