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5 Commits

Author SHA1 Message Date
Chris Lattner
a5bbde8efd fix a bug I introduced, no idea how this didn't repro right. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116462 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-14 00:30:00 +00:00
Chris Lattner
15ea094474 hack to unbreak buildbots 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116461 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-14 00:26:10 +00:00
Chris Lattner
eafc5cb80d add uadd_ov/usub_ov to apint, consolidate constant folding 
logic to use the new APInt methods.  Among other things this
implements rdar://8501501 - llvm.smul.with.overflow.i32 should constant fold

which comes from "clang -ftrapv", originally brought to my attention from PR8221.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116457 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-14 00:05:07 +00:00
Evan Phoenix
1614e50d9f Extend ConstantFolding to understand signed overflow variants 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83338 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-05 22:53:52 +00:00
Chris Lattner
e65cd40ab9 teach the optimizer how to constant fold uadd/usub intrinsics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83295 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-05 05:26:04 +00:00