| commit | 2d6c023576d78af7c74a3ecda5bb53a65ad682f0 | [log] [tgz] |
|---|---|---|
| author | David Majnemer <david.majnemer@gmail.com> | Wed May 14 20:16:28 2014 +0000 |
| committer | David Majnemer <david.majnemer@gmail.com> | Wed May 14 20:16:28 2014 +0000 |
| tree | a51684eda4a13e98a350f8b6164d0fa64744f356 | |
| parent | 1a3a07471fdd94d000f2c83c20acfcab55749a92 [diff] |
InstSimplify: Optimize signed icmp of -(zext V) Summary: We know that -(zext V) will always be <= zero, simplify signed icmps that have these. Uncovered using http://www.cs.utah.edu/~regehr/souper/ Reviewers: nicholas Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D3754 llvm-svn: 208809