Philip Reames aad4ea476e Add handling for range metadata in ValueTracking isKnownNonZero ... If we load from a location with range metadata, we can use information about the ranges of the loaded value for optimization purposes. This helps to remove redundant checks and canonicalize checks for other optimization passes. This particular patch checks whether a value is known to be non-zero from the range metadata. Currently, these tests are against InstCombine. In theory, all of these should be InstSimplify since we're not inserting any new instructions. Moving the code may follow in a separate change. Reviewed by: Hal Differential Revision: http://reviews.llvm.org/D5947 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220925 91177308-0d34-0410-b5e6-96231b3b80d8		2014-10-30 20:25:19 +00:00
..
ADCE
AddDiscriminators	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
AlignmentFromAssumptions	[AlignmentFromAssumptions] Don't crash just because the target is 32-bit	2014-09-11 08:40:17 +00:00
ArgumentPromotion	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
AtomicExpand/ARM	Use target-dependent emitLeading/TrailingFence instead of the target-independent insertLeading/TrailingFence (in AtomicExpandPass)	2014-09-03 21:01:03 +00:00
BBVectorize
BranchFolding	Delete -std-compile-opts.	2014-10-16 20:00:02 +00:00
CodeExtractor
CodeGenPrepare
ConstantHoisting
ConstantMerge
ConstProp	Fix a bug around truncating vector in const prop.	2014-08-21 02:12:35 +00:00
CorrelatedValuePropagation
DeadArgElim	DebugInfo+DeadArgElimination: Ensure llvm::Function*s from debug info are updated even when DAE removes both varargs and non-varargs arguments on the same function.	2014-10-07 15:10:23 +00:00
DeadStoreElimination	[DSE] Remove no-data-layout-only type-based overlap checking	2014-10-17 11:56:00 +00:00
DebugIR	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
EarlyCSE
FunctionAttrs	[optnone] Make the optnone attribute effective at suppressing function	2014-08-13 10:49:33 +00:00
GCOVProfiling	test: Make this test runnable in directories with @ in their names	2014-10-22 18:18:54 +00:00
GlobalDCE	GlobalDCE: Don't drop any COMDAT members	2014-10-07 07:07:19 +00:00
GlobalOpt	GlobalOpt: Don't drop unused memberes of a Comdat	2014-10-08 07:23:31 +00:00
GVN	Relax the constraint more in MemoryDependencyAnalysis.cpp	2014-08-29 20:32:58 +00:00
IndVarSimplify	Revert "r219834 - Teach ScalarEvolution to sharpen range information"	2014-10-15 23:46:04 +00:00
Inline	test: tweak inlined-allocs test	2014-10-29 06:31:11 +00:00
InstCombine	Add handling for range metadata in ValueTracking isKnownNonZero	2014-10-30 20:25:19 +00:00
InstMerge
InstSimplify	[InstSimplify] Support constant folding to vector of pointers	2014-10-22 12:18:48 +00:00
Internalize	Use "weak alias" instead of "alias weak"	2014-07-30 22:51:54 +00:00
IPConstantProp
JumpThreading	Fix a somewhat subtle pair of issues with JumpThreading I introduced in	2014-10-20 05:34:36 +00:00
LCSSA
LICM	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
LoadCombine
LoopDeletion
LoopIdiom	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
LoopReroll
LoopRotate	llvm/test/Transforms/LoopRotate/nosimplifylatch.ll: Fix possibly mis-repeatedly-pasted test.	2014-10-29 23:05:12 +00:00
LoopSimplify	FileCheckize. NFC.	2014-09-12 17:55:16 +00:00
LoopStrengthReduce	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
LoopUnroll	This patch de-pessimizes the calculation of loop trip counts in	2014-10-10 17:39:11 +00:00
LoopUnswitch
LoopVectorize	Add minnum / maxnum intrinsics	2014-10-21 23:00:20 +00:00
LowerAtomic
LowerExpectIntrinsic
LowerInvoke
LowerSwitch
Mem2Reg	Delete -std-compile-opts.	2014-10-16 20:00:02 +00:00
MemCpyOpt	Allow call-slop optzn for destinations with a suitable dereferenceable attribute	2014-10-16 19:43:08 +00:00
MergeFunc	Fix crash when looking up the addrspace of GEPs with vector types	2014-09-02 18:47:54 +00:00
MetaRenamer	Use "weak alias" instead of "alias weak"	2014-07-30 22:51:54 +00:00
ObjCARC	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
PartiallyInlineLibCalls	PartiallyInlineLibCalls: Check sqrt result type before transforming it.	2014-08-01 23:21:21 +00:00
PhaseOrdering
PruneEH
Reassociate	[Reassociate] Don't canonicalize X - undef to X + (-undef).	2014-10-09 20:06:29 +00:00
Reg2Mem
SampleProfile	Add profile writing capabilities for sampling profiles.	2014-10-30 18:00:06 +00:00
Scalarizer	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
ScalarRepl	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
SCCP
SeparateConstOffsetFromGEP/NVPTX	[SeparateConstOffsetFromGEP] Fixed a bug related to unsigned modulo	2014-10-25 18:34:03 +00:00
SimplifyCFG	Add minnum / maxnum intrinsics	2014-10-21 23:00:20 +00:00
Sink
SLPVectorizer	[SLPVectorize] Basic ephemeral-value awareness	2014-10-15 17:35:01 +00:00
SROA	[SROA] Change how SROA does vector-based promotion of allocas to handle	2014-10-18 00:44:02 +00:00
StripSymbols	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
StructurizeCFG
TailCallElim	Transforms: reapply SVN r219899	2014-10-28 18:27:37 +00:00
TailDup
Util	utils: Fix segfault in flattencfg	2014-08-13 20:31:53 +00:00