Hal Finkel 9d85eff56a [DSE] Remove no-data-layout-only type-based overlap checking ... DSE's overlap checking contained special logic, used only when no DataLayout was available, which inferred a complete overwrite when the pointee types were equal. This logic seems fine for regular loads/stores, but does not work for memcpy and friends. Instead of fixing this, I'm just removing it. Philosophically, transformations should not contain enhanced behavior used only when data layout is lacking (data layout should be strictly additive), and maintaining these rarely-tested code paths seems not worthwhile at this stage. Credit to Aliaksei Zasenka for the bug report and the diagnosis. The test case (slightly reduced from that provided by Aliaksei) replaces the original contents of test/Transforms/DeadStoreElimination/no-targetdata.ll -- a few other tests have been updated to have a data layout. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220035 91177308-0d34-0410-b5e6-96231b3b80d8		2014-10-17 11:56:00 +00:00
..
BasicAA	Delete -std-compile-opts.	2014-10-16 20:00:02 +00:00
BlockFrequencyInfo	Fix typos	2014-05-15 01:52:21 +00:00
BranchProbabilityInfo	Fix a bug in which BranchProbabilityInfo wasn't setting branch weights of basic blocks inside loops correctly.	2014-04-14 16:56:19 +00:00
CallGraph	[tests] Cleanup initialization of test suffixes.	2013-08-16 00:37:11 +00:00
CFLAliasAnalysis	[CFL-AA] CFL-AA should not assert on an va_arg instruction	2014-10-14 20:51:26 +00:00
CostModel	AVX-512: added cost for some AVX-512 instructions	2014-09-16 07:57:37 +00:00
Delinearization	ScalarEvolution: Derive element size from the type of the loaded element	2014-06-08 19:21:20 +00:00
DependenceAnalysis	remove constant terms	2014-05-27 22:41:45 +00:00
Dominators	[tests] Cleanup initialization of test suffixes.	2013-08-16 00:37:11 +00:00
GlobalsModRef	Move the complex address expression out of DIVariable and into an extra	2014-10-01 18:55:02 +00:00
LazyCallGraph	[LCG] Add support for building persistent and connected SCCs to the	2014-04-18 10:50:32 +00:00
Lint	Teach lint about address spaces	2014-03-06 17:33:55 +00:00
LoopInfo	FileCheck-ize tests.	2013-08-22 00:51:19 +00:00
MemoryDependenceAnalysis	[tests] Cleanup initialization of test suffixes.	2013-08-16 00:37:11 +00:00
PostDominators	FileCheck-ize tests.	2013-08-22 00:51:19 +00:00
RegionInfo	[tests] Cleanup initialization of test suffixes.	2013-08-16 00:37:11 +00:00
ScalarEvolution	This patch teaches ScalarEvolution to pick and use !range metadata.	2014-10-10 21:22:34 +00:00
ScopedNoAliasAA	Convert noalias parameter attributes into noalias metadata during inlining	2014-07-25 15:50:08 +00:00
TypeBasedAliasAnalysis	[DSE] Remove no-data-layout-only type-based overlap checking	2014-10-17 11:56:00 +00:00