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Author SHA1 Message Date
David Sherwood 02650ac036 [SVE][CodeGen] Add README for SVE-related warnings in tests 
I have added a new file:

  llvm/test/CodeGen/AArch64/README

that describes what to do in the event one of the SVE codegen tests
fails the warnings check. In addition, I've added comments to all
the relevant SVE tests pointing users at the README file.

Differential Revision: https://reviews.llvm.org/D83467
 2020-07-14 08:31:10 +01:00
David Sherwood bd97342a0c [CodeGen] Let computeKnownBits do something sensible for scalable vectors 
Until we have a real need for computing known bits for scalable
vectors I have simply changed the code to bail out for now and
pretend we know nothing. I've also fixed up some simple callers of
computeKnownBits too.

Differential Revision: https://reviews.llvm.org/D80437
 2020-06-11 08:17:11 +01:00
Andrzej Warzynski 7e20c3a71d [Aarch64][SVE] Add intrinsics for scatter stores 
Summary:
This patch adds the following SVE intrinsics for scatter stores:
* 64-bit offsets:
  * @llvm.aarch64.sve.st1.scatter (unscaled)
  * @llvm.aarch64.sve.st1.scatter.index (scaled)
* 32-bit unscaled offsets:
  * @llvm.aarch64.sve.st1.scatter.uxtw (zero-extended offset)
  * @llvm.aarch64.sve.st1.scatter.sxtw (sign-extended-offset)
* 32-bit scaled offsets:
  * @llvm.aarch64.sve.st1.scatter.uxtw.index (zero-extended offset)
  * @llvm.aarch64.sve.st1.scatter.sxtw.index (sign-extended offset)
* vector base + immediate:
  * @llvm.aarch64.sve.st1.scatter.imm

Reviewers: rengolin, efriedma, sdesmalen

Reviewed By: efriedma, sdesmalen

Subscribers: kmclaughlin, eli.friedman, tschuett, kristof.beyls, hiraditya, rkruppe, psnobl, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D71074
 2019-12-16 11:52:53 +00:00