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[CVP] Use LVI to constant fold deopt operands

Description

[CVP] Use LVI to constant fold deopt operands

Deopt operands are generally intended to record information about a site in code with minimal perturbation of the surrounding code. Idiomatically, they also tend to appear down rare paths. Putting these together, we have an obvious case for extending CVP w/deopt operand constant folding. Arguably, we should be doing this for all operands on all instructions, but that's definitely a much larger and risky change.

Differential Revision: https://reviews.llvm.org/D55678

Details

Committed
reamesJan 21 2019, 5:34 PM
Differential Revision
D55678: [CVP] Use LVI to constant fold deopt operands
Parents
rL351773: Updated issue 3144
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