Create a legacy pass that combines instructions into fewer, simpler forms.
Synopsis
Declared in <llvm/Transforms/InstCombine/InstCombine.h>
FunctionPass*
createInstructionCombiningPass();Description
This pass does not modify the CFG, and has a tendency to make instructions dead, so a subsequent DCE pass is useful. For example, it combines: %Y = add int 1, %X %Z = add int 1, %Y into: %Z = add int 2, %X
Return Value
An owning pointer to the newly created FunctionPass.
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