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llvm-project/llvm/test/Transforms/SLPVectorizer
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Simon Pilgrim 1385b27e92 [CostModel][X86] Add CTLZ scalar costs 
Add specific scalar costs for CTLZ instructions, we can't discriminate between CTLZ and CTLZ_ZERO_UNDEF so we have to assume the worst. Given how BSR is often a microcoded nightmare on some older targets we might still be underestimating it.

For targets supporting LZCNT (Intel Haswell+ or AMD Fam10+), we provide overrides that assume 1cy costs.

llvm-svn: 374786
 		2019-10-14 16:30:17 +00:00
..
AArch64 [SLP] respect target register width for GEP vectorization (PR43578) 2019-10-09 16:32:49 +00:00
AMDGPU [LAA] Re-check bit-width of pointers after stripping. 2019-07-18 17:30:27 +00:00
ARM Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
NVPTX Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
PowerPC Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
SystemZ [lit] Delete empty lines at the end of lit.local.cfg NFC 2019-06-17 09:51:07 +00:00
X86 [CostModel][X86] Add CTLZ scalar costs 2019-10-14 16:30:17 +00:00
XCore Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
int_sideeffect.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00