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3 Commits

Author SHA1 Message Date
Quentin Colombet
a3fb49cd85 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184222 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-06-18 20:14:39 +00:00
Dan Gohman
36a0947820 Eliminate more uses of llvm-as and llvm-dis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81290 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-08 23:54:48 +00:00
Chris Lattner
727c235840 new testcase, by Dan Gohman 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34255 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-13 23:41:24 +00:00