llvm-project

Commit Graph

Author	SHA1	Message	Date
Michael Kuperstein	3a3c64d23e	[LV] For some IVs, use vector phis instead of widening in the loop body Previously, whenever we needed a vector IV, we would create it on the fly, by splatting the scalar IV and adding a step vector. Instead, we can create a real vector IV. This tends to save a couple of instructions per iteration. This only changes the behavior for the most basic case - integer primary IVs with a constant step. Differential Revision: http://reviews.llvm.org/D20315 llvm-svn: 271410	2016-06-01 17:16:46 +00:00
Elena Demikhovsky	88e76cad16	Create masked gather and scatter intrinsics in Loop Vectorizer. Loop vectorizer now knows to vectorize GEP and create masked gather and scatter intrinsics for random memory access. The feature is enabled on AVX-512 target. Differential Revision: http://reviews.llvm.org/D15690 llvm-svn: 261140	2016-02-17 19:23:04 +00:00

Author

SHA1

Message

Date

Michael Kuperstein

3a3c64d23e

[LV] For some IVs, use vector phis instead of widening in the loop body

Previously, whenever we needed a vector IV, we would create it on the fly,
by splatting the scalar IV and adding a step vector. Instead, we can create a
real vector IV. This tends to save a couple of instructions per iteration.

This only changes the behavior for the most basic case - integer primary
IVs with a constant step.

Differential Revision: http://reviews.llvm.org/D20315

llvm-svn: 271410

2016-06-01 17:16:46 +00:00

Elena Demikhovsky

88e76cad16

Create masked gather and scatter intrinsics in Loop Vectorizer.

Loop vectorizer now knows to vectorize GEP and create masked gather and scatter intrinsics for random memory access.

The feature is enabled on AVX-512 target.
Differential Revision: http://reviews.llvm.org/D15690

llvm-svn: 261140

2016-02-17 19:23:04 +00:00

2 Commits