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8bacb53cc6
llvm-6502/include/llvm/CodeGen
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Hal Finkel 8bacb53cc6 Add two additional hazard recognizer functions 
This adds two additional functions to the hazard recognizer interface. These
are optional (in the sense that the default implementations preserve the
current behavior), and used by the post-RA scheduler. Upcoming commits will use
this functionality in order to improve dispatch-group formation on the POWER7
and related cores. Dispatch groups are an odd construct: sometimes we need to
insert nops to force a new one to start (for performance reasons), and some
instructions need to appear in certain positions within a group, but the groups
are not fundamentally cycle based (they can contain instructions with data
dependencies with non-trivial latencies).

Motivation:

unsigned PreEmitNoops(SUnit *) - Used to force the post-RA scheduler to insert
nops to force a new dispatch group to begin. We already have a NoopHazard, and
this is also still needed. However, NoopHazard only causes a nop to be inserted
if there are no other available instructions, and so is not always sufficient.
The number of nops to insert depends on state that only the hazard recognizer
has, so a general callback is necessary.

bool ShouldPreferAnother(SUnit *) - Used to avoid scheduling instructions that
would start a new dispatch group when others are available that could be part
of the current dispatch group. In this case, we don't want to issue nops,
because the non-preferred instruction will implicitly start a new dispatch
group regardless.

Although the motivation for these functions is driven by the PowerPC backend,
they are completely general.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197084 91177308-0d34-0410-b5e6-96231b3b80d8
2013-12-11 22:33:43 +00:00
..
PBQP Dereference the node iterator when dumping the PBQP graph structure in DOT 2013-11-21 06:30:14 +00:00
Analysis.h [stackprotector] Refactor out the end of isInTailCallPosition into the function returnTypeIsEligibleForTailCall. 2013-08-20 08:36:50 +00:00
AsmPrinter.h Reland 196270 "Generalize debug info / EH emission in AsmPrinter" 2013-12-03 15:10:23 +00:00
CalcSpillWeights.h CalcSpillWeights: allow overidding the spill weight normalizing function 2013-11-11 19:56:14 +00:00
CallingConvLower.h Use SmallVectorImpl& instead of SmallVector to avoid repeating small vector size. 2013-07-14 04:42:23 +00:00
CommandFlags.h Speling fixes. 2013-10-22 15:18:03 +00:00
DAGCombine.h Refactor DAGCombinerInfo. Change the different booleans that indicate if we are before or after different runs of DAGCo, with the CombineLevel enum. 2012-12-27 06:47:41 +00:00
DFAPacketizer.h Sort the #include lines for the include/... tree with the script. 2012-12-03 17:02:12 +00:00
EdgeBundles.h Give a small negative bias to giant edge bundles. 2012-05-21 03:11:23 +00:00
FastISel.h Avoid illegal integer promotion in fastisel 2013-11-15 19:09:27 +00:00
FunctionLoweringInfo.h Simplify landing pad lowering. 2013-07-04 04:53:45 +00:00
GCMetadata.h GCInfoDeleter code cleanup after r175528 2013-03-01 11:40:32 +00:00
GCMetadataPrinter.h Mark unimplemented copy constructors and copy assignment operators as LLVM_DELETED_FUNCTION. 2012-09-17 06:59:23 +00:00
GCs.h Add a GC plugin for Erlang 2013-03-25 13:47:46 +00:00
GCStrategy.h Convert comments to proper Doxygen comments. 2012-06-09 00:01:45 +00:00
IntrinsicLowering.h Move all of the header files which are involved in modelling the LLVM IR 2013-01-02 11:36:10 +00:00
ISDOpcodes.h Add addrspacecast instruction. 2013-11-15 01:34:59 +00:00
JITCodeEmitter.h Simplify code. 2013-02-09 13:29:31 +00:00
LatencyPriorityQueue.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
LexicalScopes.h Remove capability for polymorphic destruction from LexicalScope 2013-11-20 00:54:28 +00:00
LinkAllAsmWriterComponents.h Add a GC plugin for Erlang 2013-03-25 13:47:46 +00:00
LinkAllCodegenComponents.h Add a GC plugin for Erlang 2013-03-25 13:47:46 +00:00
LiveInterval.h Replacing HUGE_VALF with llvm::huge_valf in order to work around a warning triggered in MSVC 12. 2013-11-13 00:15:44 +00:00
LiveIntervalAnalysis.h Represent RegUnit liveness with LiveRange instance 2013-10-10 21:29:02 +00:00
LiveIntervalUnion.h Rename LiveRange to LiveInterval::Segment 2013-10-10 21:28:43 +00:00
LiveRangeEdit.h Auto-compute live intervals on demand. 2013-08-14 23:50:16 +00:00
LiveRegMatrix.h Sort the #include lines for the include/... tree with the script. 2012-12-03 17:02:12 +00:00
LiveRegUnits.h LiveRegUnits: Use *MBB for consistency and convenience. 2013-10-14 22:18:59 +00:00
LiveStackAnalysis.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
LiveVariables.h Use SmallVectorImpl& instead of SmallVector to avoid repeating small vector size. 2013-07-11 16:22:38 +00:00
MachineBasicBlock.h Even more spelling fixes for "instruction". 2013-09-28 13:42:22 +00:00
MachineBlockFrequencyInfo.h Added MachineBlockFrequencyInfo::view for displaying the block frequency propagation graph via graphviz. 2013-12-03 00:49:33 +00:00
MachineBranchProbabilityInfo.h Add editor C++ filetype declaration no functionality change. 2013-08-12 21:10:23 +00:00
MachineCodeEmitter.h Sort the #include lines for the include/... tree with the script. 2012-12-03 17:02:12 +00:00
MachineCodeInfo.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
MachineConstantPool.h Directly access objects which may change during compilation. 2013-06-17 20:41:25 +00:00
MachineDominators.h Add even more constatness in MachineDominators.h. 2013-02-16 12:36:32 +00:00
MachineFrameInfo.h Reland "Fix miscompile of MS inline assembly with stack realignment" 2013-12-10 18:27:32 +00:00
MachineFunction.h Reland "Fix miscompile of MS inline assembly with stack realignment" 2013-12-10 18:27:32 +00:00
MachineFunctionAnalysis.h Remove unneeded "TargetMachine.h" #includes. 2013-02-09 20:54:05 +00:00
MachineFunctionPass.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
MachineInstr.h Rename parameter: defined regs are not incoming. 2013-10-10 21:28:38 +00:00
MachineInstrBuilder.h Reapply an improved version of r180816/180817. 2013-07-09 20:28:37 +00:00
MachineInstrBundle.h Add a getBundleEnd() function to go with the existing getBundleStart(). 2013-01-09 01:02:19 +00:00
MachineJumpTableInfo.h Sort the #include lines for the include/... tree with the script. 2012-12-03 17:02:12 +00:00
MachineLoopInfo.h Don't #include heavy Dominators.h file in LoopInfo.h. This change reduces 2013-12-07 21:20:17 +00:00
MachineMemOperand.h Add target flags to MachineMemOperands. 2013-04-27 03:54:17 +00:00
MachineModuleInfo.h Make a few more things const. 2013-08-15 20:25:44 +00:00
MachineModuleInfoImpls.h Rename virtual table anchors from Anchor() to anchor() for consistency with the rest of the tree. 2012-09-26 06:36:36 +00:00
MachineOperand.h Fix a typo where we were creating <def,kill> operands instead of 2013-11-22 00:46:32 +00:00
MachinePassRegistry.h Allow targets to select the default scheduler by name. 2012-04-19 01:34:10 +00:00
MachinePostDominators.h Remove unneeded #include. 2013-03-10 01:15:14 +00:00
MachineRegisterInfo.h [weak vtables] Remove a bunch of weak vtables 2013-11-19 00:57:56 +00:00
MachineRelocation.h [typo] An LLVM. 2013-08-16 23:30:19 +00:00
MachineScheduler.h Factor out the SchedRemainder/SchedBoundary from GenericScheduler strategy. 2013-12-07 05:59:44 +00:00
MachineSSAUpdater.h Mark unimplemented copy constructors and copy assignment operators as LLVM_DELETED_FUNCTION. 2012-09-17 06:59:23 +00:00
MachineTraceMetrics.h Add ArrayRef constructor from None, and do the cleanups that this constructor enables 2013-05-05 00:40:33 +00:00
MachORelocation.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
Passes.h Move the old pass manager infrastructure into a legacy namespace and 2013-11-09 12:26:54 +00:00
PseudoSourceValue.h [typo] An LLVM. 2013-08-16 23:30:19 +00:00
RegAllocPBQP.h Re-apply r194300 with fixes for warnings. 2013-11-09 03:08:56 +00:00
RegAllocRegistry.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
RegisterClassInfo.h MI-Sched: Adjust regpressure limits for reserved regs. 2013-06-21 18:32:58 +00:00
RegisterPressure.h Represent RegUnit liveness with LiveRange instance 2013-10-10 21:29:02 +00:00
RegisterScavenging.h Use SmallVectorImpl::iterator/const_iterator instead of SmallVector 2013-07-03 05:01:24 +00:00
ResourcePriorityQueue.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
RuntimeLibcalls.h Fix filename in header comment 2013-11-16 15:40:54 +00:00
ScheduleDAG.h MI-Sched: Model "reserved" processor resources. 2013-12-05 17:56:02 +00:00
ScheduleDAGInstrs.h Correct word hyphenations 2013-12-05 05:44:44 +00:00
ScheduleDFS.h SchedDFS: Complete support for nested subtrees. 2013-01-25 06:52:27 +00:00
ScheduleHazardRecognizer.h Add two additional hazard recognizer functions 2013-12-11 22:33:43 +00:00
SchedulerRegistry.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
ScoreboardHazardRecognizer.h Sort the #include lines for the include/... tree with the script. 2012-12-03 17:02:12 +00:00
SelectionDAG.h Split SETCC if VSELECT requires splitting too. 2013-11-22 00:39:23 +00:00
SelectionDAGISel.h Add OPC_CheckChildSame0-3 to the DAG isel matcher. This replaces sequences of MoveChild, CheckSame, MoveParent. Saves 846 bytes from the X86 DAG isel matcher, ~300 from ARM, ~840 from Hexagon. 2013-10-05 05:38:16 +00:00
SelectionDAGNodes.h Add addrspacecast instruction. 2013-11-15 01:34:59 +00:00
SlotIndexes.h Down-scale slot index distance to save bits. 2013-07-30 19:59:19 +00:00
StackMaps.h Refactor a lot of patchpoint/stackmap related code to simplify and make it 2013-11-29 03:07:54 +00:00
StackProtector.h Reformat code with clang-format. 2013-10-30 02:25:14 +00:00
TargetLoweringObjectFileImpl.h PR16493: DebugInfo with TLS on PPC crashing due to invalid relocation 2013-07-01 21:45:25 +00:00
TargetSchedule.h Factor out the SchedRemainder/SchedBoundary from GenericScheduler strategy. 2013-12-07 05:59:44 +00:00
ValueTypes.h Implement AArch64 vector load/store multiple N-element structure class SIMD(lselem). 2013-10-10 17:00:52 +00:00
ValueTypes.td Implement aarch64 neon instruction set AdvSIMD (Across). 2013-10-05 08:22:10 +00:00
VirtRegMap.h Remove VirtRegMap::getRegAllocPref(). 2012-12-04 00:35:59 +00:00