Commit Graph

3 Commits

Author SHA1 Message Date
Quentin Colombet b51a68681a During SelectionDAG building explicitly set a node to constant zero when the
value is zero.
This allows optmizations to kick in more easily.
Fix some test cases so that they remain meaningful (i.e., not completely dead
coded) when optimizations apply.

<rdar://problem/14096009> superfluous multiply by high part of zero-extended
value.

llvm-svn: 184222
2013-06-18 20:14:39 +00:00
Dan Gohman 40503396da Eliminate more uses of llvm-as and llvm-dis.
llvm-svn: 81290
2009-09-08 23:54:48 +00:00
Chris Lattner 9b600ab5a6 new testcase, by Dan Gohman
llvm-svn: 34255
2007-02-13 23:41:24 +00:00