Chris Lattner a59eb7c09c 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. llvm-svn: 95855		2010-02-11 06:26:33 +00:00
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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	Fix a README item: have functionattrs look through selects and	2010-01-06 15:37:47 +00:00
GlobalDCE
GlobalOpt	fix a globalopt crash on 'bullet' (handling evaluation of a store	2010-01-07 01:16:21 +00:00
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	Delete useless trailing semicolons.	2010-01-05 17:55:26 +00:00
InstCombine	Rename ValueRequiresCast to ShouldOptimizeCast, to better reflect	2010-02-11 06:26:33 +00:00
Internalize
IPConstantProp	Delete useless trailing semicolons.	2010-01-05 17:55:26 +00:00
JumpThreading	Make jump threading honor x|undef -> true and x&undef -> false,	2010-02-11 04:40:44 +00:00
LCSSA
LICM	Remove dead debug info intrinsics.	2010-01-05 01:10:40 +00:00
LoopDeletion
LoopIndexSplit	Delete useless trailing semicolons.	2010-01-05 17:55:26 +00:00
LoopRotate	Delete useless trailing semicolons.	2010-01-05 17:55:26 +00:00
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	Delete useless trailing semicolons.	2010-01-05 17:55:26 +00:00
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