| commit | 1505fa4376fb5c97625efa36d83beca49b864b2d | [log] [tgz] |
|---|---|---|
| author | Jiangning Liu <jiangning.liu@arm.com> | Mon Aug 11 05:02:04 2014 +0000 |
| committer | Jiangning Liu <jiangning.liu@arm.com> | Mon Aug 11 05:02:04 2014 +0000 |
| tree | 31c5e7c92a147873b9763acea6533d322f6839ad | |
| parent | 07f1b21cb5c9ccda085f810c2c9d0d154e29f8c9 [diff] |
In LVI(Lazy Value Info), originally value on a BB can only be caculated once, and the lattice will be updated to be a state other than "undefined". This limiation could miss some opportunities of lowering "overdefined" to be an even accurate value. So this patch ask the algorithm to try to lower the lattice value again even if the value has been lowered to be "overdefined". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215343 91177308-0d34-0410-b5e6-96231b3b80d8