Simon Pilgrim 01729bd834 [X86][SSE] Improve cost model for i64 vector comparisons on pre-SSE42 targets ... As discussed on PR24888, until SSE42 we don't have access to PCMPGTQ for v2i64 comparisons, but the cost models don't reflect this, resulting in over-optimistic vectorizaton. This patch adds SSE2 'base level' costs that match what a typical target is capable of and only reduces the v2i64 costs at SSE42. Technically SSE41 provides a PCMPEQQ v2i64 equality test, but as getCmpSelInstrCost doesn't give us a way to discriminate between comparison test types we can't easily make use of this, otherwise we could split the cost of integer equality and greater-than tests to give better costings of each. Differential Revision: http://reviews.llvm.org/D20057 llvm-svn: 268972		2016-05-09 21:14:38 +00:00
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AArch64	[AArch64] Reduce vector insert/extract cost for Kryo	2016-02-18 18:35:45 +00:00
AMDGPU	AMDGPU: Cost model for basic integer operations	2016-03-25 01:16:40 +00:00
ARM	[ARM] Don't pessimize i32 vselect.	2015-11-17 17:25:15 +00:00
PowerPC	[TTI] Let the cost model estimate ctpop costs based on legality	2016-03-31 10:42:40 +00:00
X86	[X86][SSE] Improve cost model for i64 vector comparisons on pre-SSE42 targets	2016-05-09 21:14:38 +00:00
no_info.ll	Roll forward r243250	2015-07-26 19:10:03 +00:00