David Majnemer 12fd50410d [SLPVectorizer] Vectorizing the libm sqrt to llvm's sqrt intrinsic requires nnan ... To quote the langref "Unlike sqrt in libm, however, llvm.sqrt has undefined behavior for negative numbers other than -0.0 (which allows for better optimization, because there is no need to worry about errno being set). llvm.sqrt(-0.0) is defined to return -0.0 like IEEE sqrt." This means that it's unsafe to replace sqrt with llvm.sqrt unless the call is annotated with nnan. Thanks to Hal Finkel for pointing this out! llvm-svn: 265521		2016-04-06 07:04:53 +00:00
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AArch64	Reapply commit r259357 with a fix for PR26629	2016-02-18 14:14:40 +00:00
AMDGPU	[SLPVectorizer] Try different vectorization factors for store chains	2015-07-08 23:40:55 +00:00
ARM	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
X86	[SLPVectorizer] Vectorizing the libm sqrt to llvm's sqrt intrinsic requires nnan	2016-04-06 07:04:53 +00:00
XCore	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00