Alexey Bataev 8d23745f59 [SLP] Preserve IR flags when vectorizing horizontal reductions. ...

Summary:
The SLP vectorizer should propagate IR-level optimization hints/flags
(nsw, nuw, exact, fast-math) when converting scalar horizontal
reductions instructions into vectors, just like for other vectorized
instructions.
It doe not include IR propagation for extra arguments, we need to handle
original scalar operations for extra args to propagate correct flags.

Reviewers: mkuper, mzolotukhin, hfinkel

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D30418

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296614 91177308-0d34-0410-b5e6-96231b3b80d8

2017-03-01 12:43:39 +00:00

..

AArch64

[SLP] Fix for PR32038: extra add of PHI node when it is not required.

2017-03-01 10:50:44 +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

PowerPC

[SLP] Pass in correct alignment when query memory access cost

2016-05-31 20:41:19 +00:00

X86

[SLP] Preserve IR flags when vectorizing horizontal reductions.

2017-03-01 12:43:39 +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