| commit | 06413cd0f0aafb56b86ec8f7ab44328ca49f1aeb | [log] [tgz] |
|---|---|---|
| author | Arnold Schwaighofer <aschwaighofer@apple.com> | Thu May 29 22:10:01 2014 +0000 |
| committer | Arnold Schwaighofer <aschwaighofer@apple.com> | Thu May 29 22:10:01 2014 +0000 |
| tree | 1fd307d679f0f3449fa6a0ad242623843f4cc763 | |
| parent | ade072c1a9cbd06e99862dff90c72af0b1f2edbe [diff] |
LoopVectorizer: Add a check that the backedge taken count + 1 does not overflow The loop vectorizer instantiates be-taken-count + 1 as the loop iteration count. If this expression overflows the generated code was invalid. In case of overflow the code now jumps to the scalar loop. Fixes PR17288. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209854 91177308-0d34-0410-b5e6-96231b3b80d8