Specialized opaque value conversions.

For targets which wrap address, unwrap for analysis.

updateDbgUsersToReg - Update a collection of debug instructions to refer to the designated register.

A callback to allow target a chance to update register allocation hints when a register is "changed" (e.g. coalesced) to another register. e.g. On ARM

Update \p RelBlockFreq from \p BlockFreq and \p EntryFreq BlockFreq is divided by EntryFreq and added to RelBlockFreq. To represent fractional values

Update the internal location to \p Loc.

Accumulate all body samples to set total samples.

Return true if we must provide debug info to create PGO profiles.

Returns true if the target wants to use frame pointer based accesses to spill to the scavenger emergency spill slot.

True if the target wants to use interprocedural register allocation by default. The -enable-ipra flag can be used to override this.

Signal whether instruction referencing variable locations are desired for this function's debug-info.

Signal whether instruction referencing variable locations are desired for this function's debug-info.

If this function returns true, SelectionDAGBuilder emits a LOAD_STACK_GUARD node when it is lowering Intrinsic::stackprotector.

Return whether names in the profile are all MD5 numbers.

Return whether names in the profile are all MD5 numbers.

Return whether names in the profile are all MD5 numbers.

Return true when a target supports MachineCombiner.

If this function returns true, stack protection checks should XOR the frame pointer (or whichever pointer is used to address locals) into the stack gu

Returns true if this strategy is expecting the use of gc.statepoints, and false otherwise.

Provide iteration support to walk over all uses of an SDNode.

Return true if there are no uses of this node.

use_empty - Return true if there are no instructions using the specified register.

Return the number of uses of this node. This method takes time proportional to the number of uses.

Specialize the methods defined in Value, as we know that an instruction can only be used by other instructions.

Returns a range that includes all operands that are register uses. This may include unrelated operands which are not register uses.

Return true if this instruction requires custom insertion support when the DAG scheduler is inserting it into a machine basic block. If this is true

If set, appropriate metadata tables must be emitted by the back-end (assembler, JIT, or otherwise). For statepoint, this method is currently unsupport

True if the target uses physical regs (as nearly all targets do). False for stack machines such as WebAssembly and other virtual-register machines. If

In release builds, this is a no-op. For !NDEBUG builds, the checks are implemented in the .cpp file to avoid circular header deps.

Return the value defined by this instruction, if any. This includes dead defs, it is the value created by the instruction's def operands.

Return the value that is live-in to the instruction. This is the value that will be read by the instruction's use operands. Return NULL if no value is

Return the value leaving the instruction, if any. This can be a live-through value, or a live def. A dead def returns NULL.

Returns the value alive at the end of the instruction, if any. This can be a live-through value, a live def or a dead def.

Perform target-specific instruction verification.

Returns true if all properties set in V (i.e. required by a pass) are set in this.

Convert a virtual register number to a 0-based index. The first virtual register in a function will get the index 0.

Convert a virtual register number to a 0-based index. The first virtual register in a function will get the index 0.