Mohammed Agabaria 9c6b24cc3a [X86] updating TTI costs for arithmetic instructions on X86\SLM arch.
updated instructions:
pmulld, pmullw, pmulhw, mulsd, mulps, mulpd, divss, divps, divsd, divpd, addpd and subpd.

special optimization case which replaces pmulld with pmullw\pmulhw\pshuf seq. 
In case if the real operands bitwidth <= 16.

Differential Revision: https://reviews.llvm.org/D28104 



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291657 91177308-0d34-0410-b5e6-96231b3b80d8
2017-01-11 08:23:37 +00:00
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