Returns true if MI is an instruction that defines Reg to have a constant value and the value is recorded in ImmVal. The ImmVal is a result that should

Return the alignment required by the whole constant pool, of which the first element must be aligned.

Return the cost of copying a value between two registers in this class. A negative number means the register class is very expensive to copy e.g. stat

Returns the copy identifier for a given encoded discriminator \p D.

Get the cost.

Return the counter that corresponds to a specific profile counter.

Return the size of the counters section in bytes.

Return the name of a covarage mapping variable (internal linkage) for each instrumented source module. Such variables are allocated in the __llvm_covm

Return the name of the internal variable recording the array of PGO name vars referenced by the coverage mapping. The owning functions of those names

Gets all of the functions covered by this profile.

The lane masks returned by getSubRegIndexLaneMask() above can only be used to determine if sub-registers overlap - they can't be used to determine if

Get the scaled count of scheduled micro-ops and resources, including executed resources.

Return the length of the (data dependency) critical path through the trace.

For use with PostRAScheduling: in CriticalPathRCs, return any register classes that should only be considered for anti-dependence breaking if they are

Returns a legal register class to copy a register in the specified class to or from. If it is possible to copy the register directly without using a c

Return current debug location information.

Number of cycles to issue the instructions scheduled in this zone.

Micro-ops issued in the current cycle

Get the call site currently being processed, if any. return zero if none.

Get location information used by debugging information.

getCurrentFunctionScope - Return lexical scope for the current function.

Return the maximum number of "x & (x - 1)" operations that can be done instead of deferring to a custom CTPOP.

Return a register mask for the registers preserved by the unwinder, or nullptr if no custom mask is needed.

Return PBQPConstraint(s) for the target. Override to provide custom PBQP constraints.

Return the cycle that MI is scheduled at, or -1.

Convert scaled resource usage to a cycle count that can be compared with latencies.

Target can subclass this hook to select a different DAG scheduler.

Return a non-null DFS result if the scheduling strategy initialized it.

\returns The DWARF address space of the memory pointed to or referenced by a pointer or reference type respectively.

Given a value use iterator, return the data operand corresponding to it. Iterator must actually correspond to a data operand.

Return a pointer to the underlying ProfileData vector that this class constructs.

Return true if data objects should be emitted into their own section, corresponds to -fdata-sections.

Return the number of ProfileData elements.

Returns the dead def kill slot for the current instruction.

Get the concrete record with the specified name.

Return the operand index in \p MI that defines \p Def

Get the exception handling used with constrained floating point

Get the rounding mode handling used with constrained floating point

Return the destination basic blocks...

Get the floating point math metadata being used.

Return the current function's default denormal handling kind for the given floating point type.

The latency of dependence chains leading into this zone.

Retrieve the number of dereferenceable bytes, if the dereferenceable attribute exists (zero is returned otherwise).