isConstantOrConstantVector overloads

Synopses

Declared in <llvm/CodeGen/GlobalISel/Utils.h>

Determines if MI defines a constant integer or a build vector of constant integers. Treats undef values as constants.

bool
isConstantOrConstantVector(
    MachineInstr& MI,
    MachineRegisterInfo const& MRI);

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Return true if the specified instruction is known to be a constant, or a vector of constants.

bool
isConstantOrConstantVector(
    MachineInstr const& MI,
    MachineRegisterInfo const& MRI,
    bool AllowFP = true,
    bool AllowOpaqueConstants = true);

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Return Value

  • True if MI defines a constant or build vector of constants.

  • True if MI is a constant or vector of constants.

Parameters

Name

Description

MI

Instruction to inspect.

MRI

Register information for the function.

AllowFP

Whether floating‐point constants are accepted.

AllowOpaqueConstants

Whether opaque constants like globals count.

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