This pass may be implemented by targets that want to run passes immediately before machine code is emitted.

Targets may add passes immediately before machine code is emitted in this callback. This is called even later than `addPreEmitPass`. FIXME: Rename `ad

This method may be implemented by targets that want to run passes immediately before the (global) instruction selection.

addPreISelPasses - This method should add any "last minute" LLVM->LLVM passes (which are run just before instruction selector).

This method may be implemented by targets that want to run passes immediately before legalization.

This method may be implemented by targets that want to run passes immediately before register allocation.

This method may be implemented by targets that want to run passes immediately before the register bank selection.

addPreRewrite - Add passes to the optimized register allocation pipeline after register allocation is complete, but before virtual registers are rewri

This method may be implemented by targets that want to run passes after prolog-epilog insertion and before the second instruction scheduling pass.

Adds a barrier edge to SU by calling addPred(), with latency 0 generally or latency 1 for a store followed by a load.

addRegAllocationHint - Add a register allocation hint to the hints vector for VReg.

This method should install a register bank selector pass, which assigns register banks to virtual registers without a register class or register banks

Adds register units covered by physical register \p Reg that are part of the lanemask \p Mask.

Add the specified register class as an available regclass for the specified value type. This indicates the selector can handle values of that class na

Adds the attribute to the return value.

addSafePoint - Notes the existence of a safe point. Num is the ID of the label just prior to the safe point (if the code generator is using MachineMod

Add a scavenging frame index.

addStackRoot - Registers a root that lives on the stack. Num is the stack object ID for the alloca (if the code generator is using MachineFrameInfo).

Adds the MBB to the internal numbering. Returns the unique number assigned to the MBB.

addToPacket - Add MI to the current packet.

This adds the specified loop to the collection of top-level loops.

Add the trait \p Property to the required trait set. \p RawString is the string we parsed and derived \p Property from. If \p Score is not null, it re

Add a type test to the summary. This is used by WholeProgramDevirt if we were unable to devirtualize a checked call.

addVirtualRegisterDead - Add information about the fact that the specified register is dead after being used by the specified instruction. If AddIfNot

addVirtualRegisterKilled - Add information about the fact that the specified register is killed after being used by the specified instruction. If AddI

\brief Sink addresses into blocks using GEP instructions rather than pointer casts and arithmetic.

Prorate call targets by a distribution factor.

Adjust the prologue to add Erlang Run-Time System (ERTS) specific code in the assembly prologue to explicitly handle the stack.

Adjust the prologue to have the function use segmented stacks. This works by adding a check even before the "normal" function prologue.

Allow the target to modify the pass manager, e.g. by calling PassManagerBuilder::addExtension.

Perform target-specific adjustments to the latency of a schedule dependency. If a pair of operands is associated with the schedule dependency, DefOpId

Prior to adding the live-out mask to a stackmap or patchpoint instruction, provide the target the opportunity to adjust it (mainly to remove pseudo-re

Return true if this function adjusts the stack -- e.g., when calling another function. This is only valid during and after prolog/epilog code insertio

If the operands on InstrI are exhausted, advance InstrI to the next bundled instruction with operands.

Move iterator to the next IdxMBBPair where the SlotIndex is greater or equal to \p To.

advanceTo - Advance the specified iterator to point to the Segment containing the specified position, or end() if the position is past the end of the

Return true if it is profitable to use a scalar input to a BUILD_VECTOR even if the vector itself has multiple uses.

Should loops be aligned even when the function is marked OptSize (but not MinSize).

alignSPAdjust - This method aligns the stack adjustment to the correct alignment.

Construct a special preserved set that preserves all passes.

Callback for Value RAUW. Called when this->getValPtr()->replaceAllUsesWith(new_value) is called, _before_ any of the uses have actually been replaced

Handle RAUW by poisoning the handle.

allocHungoffUses - this is more complicated than the generic User::allocHungoffUses, because we have to allocate Uses for the incoming values and poin

Default register class filter function for register allocation. All virtual registers should be allocated.

Allocate an array of MachineOperands. This is only intended for use by internal MachineInstr functions.

Whether we allow for extra compile-time budget to perform more analysis to be more informative. This is useful to enable additional missed optimizati

Flag queries

Return true if a truncation from FromTy to ToTy is permitted when deciding whether a call is in tail position. Typically this means that both results

\name Scalar TTI Implementations @{

Determine if the target supports unaligned memory accesses. This function returns true if the target allows unaligned memory accesses of the specifie

Analyze the branching code at the end of MBB, returning true if it cannot be understood (e.g. it's a switch dispatch or isn't implemented for a target