llvm::isInstructionTriviallyDead

Return true if an unused instruction is trivially dead.

Synopsis

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

bool
isInstructionTriviallyDead(
    Instruction* I,
    TargetLibraryInfo const* TLI = nullptr);

Description

Return true if the result produced by the instruction is not used, and the instruction will return. Certain side-effecting instructions are also considered dead if there are no uses of the instruction.

Return Value

True if the unused instruction is trivially dead.

Parameters

NameDescription
IInstruction to test.
TLIOptional target library info used for library-call analysis.