Matthew Simpson 6c289a1c74 [SLP] Stop counting cost of gather sequences with multiple uses ... When building the SLP tree, we look for reuse among the vectorized tree entries. However, each gather sequence is represented by a unique tree entry, even though the sequence may be identical to another one. This means, for example, that a gather sequence with two uses will be counted twice when computing the cost of the tree. We should only count the cost of the definition of a gather sequence rather than its uses. During code generation, the redundant gather sequences are emitted, but we optimize them away with CSE. So it looks like this problem just affects the cost model. Differential Revision: https://reviews.llvm.org/D44742 llvm-svn: 328316		2018-03-23 14:18:27 +00:00
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AArch64	[SLP] Stop counting cost of gather sequences with multiple uses	2018-03-23 14:18:27 +00:00
AMDGPU	AMDGPU: Allow vectorization of packed types	2017-06-20 20:38:06 +00:00
ARM	[SLPVectorizer] add test for PR13837; NFC	2018-01-23 22:04:17 +00:00
PowerPC	[SLP] Update tests checks, NFC.	2018-01-05 14:40:04 +00:00
SystemZ	Revert r319531 "[SLPVectorizer] Failure to beneficially vectorize 'copyable' elements in integer binary ops."	2017-12-01 16:17:24 +00:00
X86	[SLP] Stop counting cost of gather sequences with multiple uses	2018-03-23 14:18:27 +00:00
XCore	…
int_sideeffect.ll	Add an @llvm.sideeffect intrinsic	2017-11-08 21:59:51 +00:00