Update SmiShiftLeft, SmiShiftLogicalRight, SmiShiftArithmeticRight and SmiDiv to support x32 port.
Introduce MakeSureDoubleAlignedHelper for x64 port.
Add X32 port into V8

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Handled comments for X32
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Added more boundary check for X32
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Added OverwriteMode logic for X32
Use stack to save and reload arguments when allocation might fail
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Refined deoptimization state handling
Ported https://chromiumcodereview.appspot.com/20070005/ and
https://chromiumcodereview.appspot.com/20298002 for X32
Fixed MacroAssembler::SmiShiftLogicalRightConstant