Chris Lattner 8c5ad3a5da Rename ValueRequiresCast to ShouldOptimizeCast, to better reflect ... what it does. Enhance it to return false to optimizing vector sign extensions from vector comparisions, which is the idiom used to get a splatted vector for a vector comparison. Doing this breaks vector-casts.ll, add some compensating transformations to handle the important case they cover without depending on this canonicalization. This fixes rdar://7434900 a serious pessimization of vector compares. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95855 91177308-0d34-0410-b5e6-96231b3b80d8		2010-02-11 06:26:33 +00:00
..
ABCD
ADCE
ArgumentPromotion
BlockPlacement
BranchFolding
CodeExtractor
CodeGenPrepare
ConstantMerge
ConstProp	fix PR6197 - infinite recursion in ipsccp due to block addresses	2010-02-01 19:35:08 +00:00
DeadArgElim	Speculatively revert r94322 to see if it fixes darwin selfhost buildbot.	2010-01-23 20:32:12 +00:00
DeadStoreElimination	Make DSE only scan blocks that are reachable from the entry	2010-02-11 05:11:54 +00:00
FunctionAttrs
GlobalDCE
GlobalOpt
GVN	a testcase that doesn't crash GVN but could someday.	2010-02-11 05:08:05 +00:00
IndVarSimplify	-disable-output is no longer needed with -analyze.	2010-01-26 19:25:59 +00:00
Inline
InstCombine	Rename ValueRequiresCast to ShouldOptimizeCast, to better reflect	2010-02-11 06:26:33 +00:00
Internalize
IPConstantProp
JumpThreading	Make jump threading honor x|undef -> true and x&undef -> false,	2010-02-11 04:40:44 +00:00
LCSSA
LICM
LoopDeletion
LoopIndexSplit
LoopRotate
LoopSimplify
LoopStrengthReduce	-disable-output is no longer needed with -analyze.	2010-01-26 19:25:59 +00:00
LoopUnroll
LoopUnswitch	fix a crash in loop unswitch on a loop invariant vector condition.	2010-02-02 02:26:54 +00:00
LowerInvoke
LowerSetJmp
LowerSwitch
Mem2Reg	When converting dbg.declare to dbg.value, attach promoted store's debug metadata to dbg.value	2010-01-27 00:44:36 +00:00
MemCpyOpt
MergeFunc
PruneEH
Reassociate	Add a test for my change to disable reassociation for i1 types.	2010-02-06 01:16:25 +00:00
ScalarRepl	Fix a crash in scalarrepl for memcpy/memmove where the source and destination	2010-01-19 04:32:48 +00:00
SCCP
SimplifyCFG	Teach SimplifyCFG about magic pointer constants.	2010-02-05 22:03:18 +00:00
SimplifyLibCalls	Recommit this, looks like it wasn't the cause.	2010-02-03 00:21:58 +00:00
SRETPromotion
SSI
StripSymbols
TailCallElim	Revert 94937 and move the noreturn check to codegen.	2010-02-03 03:55:59 +00:00
TailDup