[PATCH] D142456: [AArch64][CostModel]: Add costs for zero/sign extend.

[hassnaaHamdi via Phabricator via llvm-commits]

hassnaa-arm added a comment.

In D142456#4079434 <https://reviews.llvm.org/D142456#4079434>, @dmgreen wrote:

>> where each operation has a cost of 2
>
> Why does each instruction have a cost of 2?

Because that is mentioned here: https://developer.arm.com/documentation/pjdoc466751330-9685/latest/ 
in section 3.25 (SVE integer instructions)


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