Robert Lougher a83e090ac2 [TailCallElim] Enable marking of calls with byval as tails ... In r339636 the alias analysis rules were changed with regards to tail calls and byval arguments. Previously, tail calls were assumed not to alias allocas from the current frame. This has been updated, to not assume this for arguments with the byval attribute. This patch aligns TailCallElim with the new rule. Tail marking can now be more aggressive and mark more calls as tails, e.g.: define void @test() { %f = alloca %struct.foo call void @bar(%struct.foo* byval %f) ret void } define void @test2(%struct.foo* byval %f) { call void @bar(%struct.foo* byval %f) ret void } define void @test3(%struct.foo* byval %f) { %agg.tmp = alloca %struct.foo %0 = bitcast %struct.foo* %agg.tmp to i8* %1 = bitcast %struct.foo* %f to i8* call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 40, i1 false) call void @bar(%struct.foo* byval %agg.tmp) ret void } The problematic case where a byval parameter is captured by a call is still handled correctly, and will not be marked as a tail (see PR7272). llvm-svn: 343986		2018-10-08 18:03:40 +00:00
..
ADCE
AddDiscriminators
AggressiveInstCombine
AlignmentFromAssumptions
ArgumentPromotion
AtomicExpand	AMDGPU: Expand atomicrmw nand in IR	2018-10-02 03:50:56 +00:00
BDCE
BlockExtractor
BranchFolding
CalledValuePropagation
CallSiteSplitting	[CallSiteSplitting] Add debug location to created PHI nodes.	2018-09-11 17:55:58 +00:00
CodeExtractor	[CodeExtractor] Use 'normal destination' BB as insert point to store invoke results.	2018-08-21 20:07:46 +00:00
CodeGenPrepare	[CodeGen] Enable tail calls for functions with NonNull attributes.	2018-09-26 10:46:18 +00:00
ConstantHoisting	Revert "Revert r341269: [Constant Hoisting] Hoisting Constant GEP Expressions"	2018-09-04 22:17:03 +00:00
ConstantMerge
ConstProp	[X86] Add constant folding for AVX512 versions of scalar floating point to integer conversion intrinsics.	2018-08-12 22:09:54 +00:00
Coroutines
CorrelatedValuePropagation	[CVP] Extend tests to illustrate an old patch isn't needed	2018-08-24 21:56:43 +00:00
CrossDSOCFI
DCE
DeadArgElim	[deadargelim] Update dbg.value of 'unused' parameters	2018-09-24 10:01:24 +00:00
DeadStoreElimination	[BasicAA] Don't assume tail calls with byval don't alias allocas	2018-08-14 01:24:35 +00:00
DivRemPairs
EarlyCSE	[EarlyCSEwMemorySSA] Add MSSA verification and tests to make EarlyCSE failures easier to track.	2018-09-17 22:35:21 +00:00
EliminateAvailableExternally
EntryExitInstrumenter
ExpandMemCmp/X86
Float2Int
ForcedFunctionAttrs
FunctionAttrs	[FuncAttrs] Remove "access range attributes" for read-none functions	2018-09-11 11:51:29 +00:00
FunctionImport	[ThinLTO] Keep non-prevailing (linkonce|weak)_odr symbols live	2018-10-08 15:12:48 +00:00
GCOVProfiling
GlobalDCE
GlobalMerge	[GlobalMerge] Allow merging globals with explicit section markings.	2018-08-02 23:54:16 +00:00
GlobalOpt	[PPC] Remove Darwin support from POWER backend.	2018-08-28 01:18:29 +00:00
GlobalSplit
GuardWidening	[GuardWidening] Ignore guards with trivial conditions	2018-08-22 02:40:49 +00:00
GVN	[GVN] Invalidate cached info for values replaced by equality propagation	2018-09-10 12:23:05 +00:00
GVNHoist	[MemorySSAUpdater] Avoid creating self-referencing MemoryDefs	2018-09-11 14:29:59 +00:00
GVNSink	[Local] Make DoesKMove required for combineMetadata.	2018-08-24 11:40:04 +00:00
HotColdSplit	Add support for new pass manager	2018-10-03 05:55:20 +00:00
IndirectBrExpand
IndVarSimplify	[IndVars] Remove unreasonable checks in rewriteLoopExitValues	2018-09-18 04:57:18 +00:00
InferAddressSpaces	AMDGPU: Fix tests using old number for constant address space	2018-09-10 02:54:25 +00:00
InferFunctionAttrs	[LibCalls] Added returned attribute to libcalls	2018-08-23 05:18:23 +00:00
Inline	[TailCallElim] Enable marking of calls with byval as tails	2018-10-08 18:03:40 +00:00
InstCombine	[InstCombine] Fix incongruous GEP type addrspace	2018-10-08 08:40:45 +00:00
InstMerge
InstNamer
InstSimplify	[InstSimplify] add vector test for fneg+fdiv; NFC	2018-10-07 14:46:33 +00:00
InterleavedAccess
Internalize
IPConstantProp	Recommit r333268: [IPSCCP] Use PredicateInfo to propagate facts from cmp instructions.	2018-08-23 11:04:00 +00:00
IRCE	Revert "[SCEV][NFC] Check NoWrap flags before lexicographical comparison of SCEVs"	2018-08-27 21:41:37 +00:00
JumpThreading	[Local] Make DoesKMove required for combineMetadata.	2018-08-24 11:40:04 +00:00
LCSSA	[DebugInfo][LCSSA] Preserve debug location in lcssa phis	2018-07-31 14:54:52 +00:00
LICM	[NFC] Add Requires: asserts where needed	2018-09-13 04:43:24 +00:00
LoadStoreVectorizer	AMDGPU: Fix private handling for allowsMisalignedMemoryAccesses	2018-09-24 13:18:15 +00:00
LoopDataPrefetch
LoopDeletion
LoopDistribute
LoopIdiom	SCEV should forget all loops containing a deleted block.	2018-08-09 17:53:26 +00:00
LoopInstSimplify	Update MemorySSA in LoopInstSimplify.	2018-08-22 20:05:21 +00:00
LoopInterchange	[LoopInterchange] Preserve LCSSA.	2018-09-26 19:34:25 +00:00
LoopLoadElim
LoopPredication
LoopReroll
LoopRotate	[New PM] Introducing PassInstrumentation framework	2018-09-20 17:08:45 +00:00
LoopSimplify
LoopSimplifyCFG	Update MemorySSA in LoopSimplifyCFG.	2018-08-22 20:10:21 +00:00
LoopStrengthReduce	AMDGPU: Fix some outdated datalayouts in tests	2018-09-13 11:56:28 +00:00
LoopUnroll	Remove LoopID metadata from the branch instruction	2018-09-26 01:03:21 +00:00
LoopUnrollAndJam	[UnJ] Improve explicit loop count checks	2018-08-11 07:37:31 +00:00
LoopUnswitch	Update MemorySSA in LoopUnswitch.	2018-09-11 19:19:21 +00:00
LoopVectorize	[LV] Do not create SCEVs on broken IR in emitTransformedIndex. PR39160	2018-10-08 05:46:29 +00:00
LoopVersioning
LoopVersioningLICM
LowerAtomic
LowerExpectIntrinsic
LowerGuardIntrinsic
LowerInvoke
LowerSwitch
LowerTypeTests
Mem2Reg
MemCpyOpt	Merge clang's isRepeatedBytePattern with LLVM's isBytewiseValue	2018-09-21 05:17:42 +00:00
MergeFunc
MergeICmps	Re-submitting changes in D51550 because it failed to patch.	2018-09-24 20:47:12 +00:00
MetaRenamer
NameAnonGlobals
NaryReassociate
NewGVN	[NewGVN] Mark function as changed if we erase instructions.	2018-09-07 11:41:34 +00:00
ObjCARC
PartiallyInlineLibCalls
PGOProfile	[PGO] Control Height Reduction	2018-09-04 17:19:13 +00:00
PhaseOrdering
PlaceSafepoints
PreISelIntrinsicLowering
PruneEH
Reassociate	revert r341288 - [Reassociate] swap binop operands to increase factoring potential	2018-09-12 21:29:11 +00:00
Reg2Mem
RewriteStatepointsForGC
SafeStack	SafeStack: Prevent OOB reads with mem intrinsics	2018-08-30 20:44:51 +00:00
SampleProfile	[SampleFDO] Add FunctionOffsetTable in compact binary format profile.	2018-09-14 20:52:59 +00:00
ScalarizeMaskedMemIntrin/X86	[ScalarizeMaskedMemIntrin] Use MinAlign to calculate alignment for the scalar load/stores to handle element types that are byte-sized but not powers of 2.	2018-09-28 03:35:37 +00:00
Scalarizer
SCCP	[IPSCCP] Fix a problem with removing labels in a switch with undef condition	2018-09-20 09:00:17 +00:00
SeparateConstOffsetFromGEP
SimpleLoopUnswitch	[SimpleLoopUnswitch] remove a chain of dead blocks at once	2018-09-04 20:19:41 +00:00
SimplifyCFG	[SimplifyCFG] Put an alignment on generated switch tables	2018-09-12 09:54:17 +00:00
Sink
SLPVectorizer	Fix vectorization of canonicalize	2018-09-17 13:24:30 +00:00
SpeculateAroundPHIs
SpeculativeExecution
SROA	[SROA] Fix alignment for uses of PHI nodes.	2018-08-30 18:59:24 +00:00
StraightLineStrengthReduce
StripDeadPrototypes
StripSymbols
StructurizeCFG	AMDGPU: Fix tests using old number for constant address space	2018-09-10 02:54:25 +00:00
SyntheticCountsPropagation
TailCallElim	[TailCallElim] Enable marking of calls with byval as tails	2018-10-08 18:03:40 +00:00
ThinLTOBitcodeWriter
Util
WholeProgramDevirt	[ThinLTO] Efficiency fix for writing type id records in per-module indexes	2018-09-25 20:14:40 +00:00