Analysis that computes which bits of each instruction result are demanded.
Synopsis
Declared in <llvm/Analysis/DemandedBits.h>
class DemandedBits;Description
A demanded bit is one that contributes to a result; bits that are not demanded can be either zero or one without affecting control or data flow.
Member Functions
Name |
Description |
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Construct demanded‐bits analysis for |
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Return true if, during analysis, I could not be reached. |
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Return whether this use is dead by means of not having any demanded bits. |
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Print demanded‐bits analysis results for the function to |
Static Member Functions
Name |
Description |
Compute alive bits of one addition operand from alive output and known operand bits |
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Compute alive bits of one subtraction operand from alive output and known operand bits |
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