Michael Zolotukhin 916731afee [SLP] Don't vectorize loads of non-packed types (like i1, i2). ...

Summary:
Given an array of i2 elements, 4 consecutive scalar loads will be lowered to
i8-sized loads and thus will access 4 consecutive bytes in memory. If we
vectorize these loads into a single <4 x i2> load, it'll access only 1 byte in
memory. Hence, we should prohibit vectorization in such cases.

PS: Initial patch was proposed by Arnold.

Reviewers: aschwaighofer, nadav, hfinkel

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D13277

llvm-svn: 248943

2015-09-30 21:05:43 +00:00

..

AArch64

[SLP] Add one more test case for propagating 'nontemporal' attributes.

2015-08-21 00:08:39 +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

[SLP] Don't vectorize loads of non-packed types (like i1, i2).

2015-09-30 21:05:43 +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