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| author | Dan Gohman <gohman@apple.com> | 2010-04-12 21:13:43 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-04-12 21:13:43 +0000 |
| commit | ca9b7037e28759c200fe5ca98190cabd121a1bba (patch) | |
| tree | 87d9cc525f270334d68ab1c057c8cba7b5cc8e81 /utils | |
| parent | dae9efc23e959d4452f5b67706896ea292b687f3 (diff) | |
| download | external_llvm-ca9b7037e28759c200fe5ca98190cabd121a1bba.zip external_llvm-ca9b7037e28759c200fe5ca98190cabd121a1bba.tar.gz external_llvm-ca9b7037e28759c200fe5ca98190cabd121a1bba.tar.bz2 | |
Suppress LinearFunctionTestReplace when the computed backedge-taken
expression is a UDiv and it doesn't appear that the UDiv came from
the user's source.
ScalarEvolution has recently figured out how to compute a tripcount
expression for the inner loop in
SingleSource/Benchmarks/Shootout/sieve.c, using a udiv. Emitting a
udiv instruction dramatically slows down the enclosing loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101068 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils')
0 files changed, 0 insertions, 0 deletions