[Bug target/43618] Incorrect sse2_cvtX2Y pattern

[haochen.jiang at intel dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43618

Haochen Jiang <haochen.jiang at intel dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |haochen.jiang at intel dot com

--- Comment #3 from Haochen Jiang <haochen.jiang at intel dot com> ---
First fix the wrong corresponding insn in machine description.
This will make when loop = 2, it is right.
For loop = 8, it need further fix in vectorization.