Matthew Simpson 995eceaf0c [TTI] Add hook for vector extract with extension ...

This change adds a new hook for estimating the cost of vector extracts followed
by zero- and sign-extensions. The motivating example for this change is the
SMOV and UMOV instructions on AArch64. These instructions move data from vector
to general purpose registers while performing the corresponding extension
(sign-extend for SMOV and zero-extend for UMOV) at the same time. For these
operations, TargetTransformInfo can assume the extensions are free and only
report the cost of the vector extract. The SLP vectorizer has been updated to
make use of the new hook.

Differential Revision: http://reviews.llvm.org/D18523

llvm-svn: 267725

2016-04-27 15:20:21 +00:00

..

llvm

[TTI] Add hook for vector extract with extension

2016-04-27 15:20:21 +00:00

llvm-c

[ORC] clang-format code that was touched in r267457. NFC.

2016-04-25 21:21:20 +00:00