| commit | 08e3bf995e6be976e55d34c1aace8370c61f68fb | [log] [tgz] |
|---|---|---|
| author | Sanjay Patel <spatel@rotateright.com> | Wed Dec 30 22:40:52 2015 +0000 |
| committer | Sanjay Patel <spatel@rotateright.com> | Wed Dec 30 22:40:52 2015 +0000 |
| tree | 6c201e3841a6d86dc951308829b9efb24aca0a63 | |
| parent | 04e678255f71d4a9ca731f57e46c723ad20a0117 [diff] |
[ValueTracking] fix bug computing isKnownToBeAPowerOfTwo() with arithmetic shift right (PR25900) This is a fix for: https://llvm.org/bugs/show_bug.cgi?id=25900 If we think that an arithmetic right shift of a power of two is always a power of two, an sdiv gets wrongly converted to udiv. Differential Revision: http://reviews.llvm.org/D15827 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256655 91177308-0d34-0410-b5e6-96231b3b80d8