llvm::isSafeToMoveBefore

Synopsis

Declared in <llvm/Transforms/Utils/CodeMoverUtils.h>

bool
isSafeToMoveBefore(
    Instruction& I,
    Instruction& InsertPoint,
    DominatorTree& DT,
    PostDominatorTree const* PDT = nullptr,
    DependenceInfo* DI = nullptr,
    bool CheckForEntireBlock = false);

Return Value

True if I can be safely moved before InsertPoint.

Parameters

Name	Description
I	Instruction to move.
InsertPoint	Instruction before which `I` would be placed.
DT	Dominator tree for the function.
PDT	Optional post-dominator tree; required for a true result.
DI	Optional dependence info; required for a true result.
CheckForEntireBlock	Whether to relax checks when moving a whole block.