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Commit d37db750 authored by Craig Topper's avatar Craig Topper
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[InstCombine] Add a test case for suboptimal handling of (double (bitcast (<1... 

[InstCombine] Add a test case for suboptimal handling of (double (bitcast (<1 x i64> (bitcast (x86_mmx)))))

The outer bitcast gets turned into an extractelement and another
bitcast rather than combining away to a single bitcast from mmx
to double.
parent d115b9fd
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