Cameron Zwarich 0a00615b34 Add a test for i1 zeroext arguments on x86-64. We currently generate code that
conforms to the ABI, but DAGCombine could in theory recognize the sequence of
zext asserts and truncates and generate incorrect code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127754 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16 20:15:44 +00:00
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