c8fe132756
[X86] Dropped XOP ctbits checks - they match the AVX checks
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llvm-svn: 277718
2016-08-04 11:04:13 +00:00
5d5ca9c0cb
[X86][SSE] Add initial costs for vector CTTZ/CTLZ
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llvm-svn: 277716
2016-08-04 10:51:41 +00:00
1b4f511aaa
[X86][SSE] Add cost model values for CTPOP of vectors
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This patch adds costs for the vectorized implementations of CTPOP, the default values were seriously underestimating the cost of these and was encouraging vectorization on targets where serialized use of POPCNT would be much better.
Differential Revision: https://reviews.llvm.org/D22456
llvm-svn: 276104
2016-07-20 10:41:28 +00:00
47638635cc
[X86] Add CTPOP/CTLZ/CTTZ scalar cost tests
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llvm-svn: 275725
2016-07-17 18:29:19 +00:00
2ea513847c
[CostModel][X86] Tidied up checks
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llvm-svn: 269770
2016-05-17 14:43:41 +00:00
420852e8d4
[CostModel][X86] Split BSWAP/BITREVERSE cost tests from CTPOP/CTLZ/CTTZ 'bit count' cost tests
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llvm-svn: 268859
2016-05-07 16:34:16 +00:00
b3f5cb7a65
[CostModel][X86] Tweak 'SSE2-only' test CPU as it was only disabling SSE41 not SSE3/SSSE3 etc.
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llvm-svn: 268763
2016-05-06 17:50:07 +00:00
93d9b96bdb
[CostModel][X86] Added ctlz/cttz undef-zero costmodel tests
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llvm-svn: 268761
2016-05-06 17:48:35 +00:00
5122c64fd8
[CostModel][X86] Added costmodel tests for vector ctpop/ctlz/cttz/bitreverse/bswap
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llvm-svn: 268738
2016-05-06 14:38:14 +00:00
Simon Pilgrim