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| author | Duncan Sands <baldrick@free.fr> | 2011-10-28 19:01:20 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2011-10-28 19:01:20 +0000 |
| commit | 012f8547f70c7cefe552282f28581a434ebe7324 (patch) | |
| tree | a5bd039d949ceecf225351d88d4b3ba0f54fc72f /docs/ProgrammersManual.html | |
| parent | 2ec69faf2615ccdffffacff9033b2228c589971c (diff) | |
The expression icmp eq (select (icmp eq x, 0), 1, x), 0 folds to false.
Spotted by my super-optimizer in 186.crafty and 450.soplex. We really
need a proper infrastructure for handling generalizations of this kind
of thing (which occur a lot), however this case is so simple that I decided
to go ahead and implement it directly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143214 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/ProgrammersManual.html')
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