Renato Golin 4e25c19165 Add a new reduction pattern match ...

Adding a new reduction pattern match for vectorizing code similar
to TSVC s3111:

for (int i = 0; i < N; i++)
  if (a[i] > b)
    sum += a[i];

This patch adds support for fadd, fsub and fmull, as well as multiple
branches and different (but compatible) instructions (ex. add+sub) in
different branches.

The difference from the previous patch(https://reviews.llvm.org/D49168)
is as follows:
 - Added check of fast-math property of fp-instruction to the
   previous patch
 - Fix/add some pattern for if-reduction.ll


Differential Revision: https://reviews.llvm.org/D54464

Patch by Takahiro Miyoshi <takahiro.miyoshi@linaro.org>
     and Masakazu Ueno <masakazu.ueno@linaro.org>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@347989 91177308-0d34-0410-b5e6-96231b3b80d8

2018-11-30 13:40:10 +00:00

..

llvm

Add a new reduction pattern match

2018-11-30 13:40:10 +00:00

llvm-c

[IR] Add a dedicated FNeg IR Instruction

2018-11-13 18:15:47 +00:00