Helper class for SSA formation on virtual registers defined in multiple blocks.
Synopsis
Declared in <llvm/CodeGen/MachineSSAUpdater.h>
class MachineSSAUpdater;Description
This is used when code duplication or another unstructured transformation wants to rewrite a set of uses of one vreg with uses of a set of vregs.
Member Functions
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Description |
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Constructors |
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Destroy the MachineSSA updater. |
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Deleted copy assignment; MachineSSAUpdater cannot be copy‐assigned. |
Indicate that a rewritten value is available at the end of the specified block with the specified value. |
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Construct SSA form, materializing a value that is live at the end of the specified block. |
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Construct SSA form, materializing a value live in the middle of a block. |
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Return true if the MachineSSAUpdater already has a value for the specified block. |
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Reset this object to get ready for a new set of SSA updates. |
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Rewrite a use of the symbolic value. |
Friends
Name |
Description |
Traits used by SSAUpdaterImpl to adapt an SSA updater implementation. |
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