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| author | Dan Gohman <gohman@apple.com> | 2009-05-02 05:36:01 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-05-02 05:36:01 +0000 |
| commit | 1dcad96dc68c8a4565f10759bcabc634f61243e0 (patch) | |
| tree | 8d80bf5ca35a9d41c50146abb32e994ad9072477 /unittests/Support/ValueHandleTest.cpp | |
| parent | dd47f88cfe1782ddcc5df61f0702de0887b1871f (diff) | |
Don't split critical edges during the AddUsersIfInteresting phase
of LSR. This makes the AddUsersIfInteresting phase of LSR a pure
analysis instead of a phase that potentially does CFG modifications.
The conditions where this code would actually perform a split are
rare, and in the cases where it actually would do a split the split
is usually undone by CodeGenPrepare, and in cases where splits
actually survive into codegen, they appear to hurt more often than
they help.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70625 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'unittests/Support/ValueHandleTest.cpp')
0 files changed, 0 insertions, 0 deletions