Craig Topper aba789b2f0 [X86] Add test cases that exercise the BSR/BSF optimization combineCMov. ... combineCmov tries to remove compares against BSR/BSF if we can prove the input to the BSR/BSF are never zero. As far as I can tell most of the time codegenprepare despeculates ctlz/cttz and gives us a cttz_zero_undef/ctlz_zero_undef which don't use a cmov. So the only way I found to trigger this code is to show codegenprepare an illegal type which it won't despeculate. I think we should be turning ctlz/cttz into ctlz_zero_undef/cttz_zero_undef for these cases before we ever get to operation legalization where the cmov is created. But wanted to add these tests so we don't regress. llvm-svn: 324409		2018-02-06 21:47:04 +00:00
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Analysis	[AMDGPU] Switch to the new addr space mapping by default	2018-02-02 16:07:16 +00:00
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CodeGen	[X86] Add test cases that exercise the BSR/BSF optimization combineCMov.	2018-02-06 21:47:04 +00:00
DebugInfo	[DWARF] Regularize dumping strings from line tables.	2018-02-05 20:43:15 +00:00
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Linker	[DWARF] Regularize dumping strings from line tables.	2018-02-05 20:43:15 +00:00
LTO	LTO: Also include dso-local bit for calls in ThinLTO cache key.	2018-02-05 23:46:32 +00:00
MC	[DWARFv5] Emit .debug_line_str (in a non-DWO file).	2018-02-06 20:29:21 +00:00
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ThinLTO/X86	[ThinLTO] Remove dead and dropped symbol declarations when possible	2018-02-06 00:43:39 +00:00
tools	[ThinLTO] Remove dead and dropped symbol declarations when possible	2018-02-06 00:43:39 +00:00
Transforms	[SLP] Update test checks, NFC.	2018-02-06 20:00:05 +00:00
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