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6 Commits

Author SHA1 Message Date
Paul Walker
17b7f05023 [SVE] Fix shift-by-imm patterns used by asr, lsl & lsr intrinsics.
Right shift patterns will no longer incorrectly accept a shift
amount of zero.  At the same time they will allow larger shift
amounts that are now saturated to their upper bound.

Patterns have been extended to enable immediate forms for shifts
taking an arbitrary predicate.

This patch also unifies the code path for immediate parsing so the
i64 based shifts are no longer treated specially.

Differential Revision: https://reviews.llvm.org/D86084
2020-08-18 11:41:26 +01:00
David Sherwood
1652ed61e6 [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
f96f4eb390 [SVE] Add more warnings checks to clang and LLVM SVE tests
There are now more SVE tests in LLVM and Clang that do not
emit warnings related to invalid use of EVT::getVectorNumElements()
and VectorType::getNumElements(). For these tests I have added
additional checks that there are no warnings in order to prevent
any future regressions.

Differential Revision: https://reviews.llvm.org/D82943
2020-07-07 09:33:20 +01:00
Kerry McLaughlin
d0a48070bb [CodeGen][SVE] Lowering of shift operations with scalable types
Summary:
Adds AArch64ISD nodes for:
 - SHL_PRED (logical shift left)
 - SHR_PRED (logical shift right)
 - SRA_PRED (arithmetic shift right)

Existing patterns for unpredicated left shift by immediate
have also been moved into the appropriate multiclasses
in SVEInstrFormats.td.

Reviewers: sdesmalen, efriedma, ctetreau, huihuiz, rengolin

Reviewed By: efriedma

Subscribers: huihuiz, tschuett, kristof.beyls, hiraditya, rkruppe, psnobl, cfe-commits, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D79478
2020-05-07 11:43:49 +01:00
Kerry McLaughlin
e5babc6bd2 [SVE][Codegen] Lower legal min & max operations
Summary:
This patch adds AArch64ISD nodes for [S|U]MIN_PRED
and [S|U]MAX_PRED, and lowers both SVE intrinsics and
IR operations for min and max to these nodes.

There are two forms of these instructions for SVE: a predicated
form and an immediate (unpredicated) form. The patterns
which existed for the latter have been updated to match a
predicated node with an immediate and map this
to the immediate instruction.

Reviewers: sdesmalen, efriedma, dancgr, rengolin

Reviewed By: efriedma

Subscribers: huihuiz, tschuett, kristof.beyls, hiraditya, rkruppe, psnobl, cfe-commits, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D79087
2020-05-04 11:19:19 +01:00
Kerry McLaughlin
de0c111de7 [AArch64][SVE] Add SVE intrinsics for saturating add & subtract
Summary:
Adds the following intrinsics:
  - @llvm.aarch64.sve.[s|u]qadd.x
  - @llvm.aarch64.sve.[s|u]qsub.x

Reviewers: sdesmalen, c-rhodes, dancgr, efriedma, cameron.mcinally, rengolin

Reviewed By: efriedma

Subscribers: tschuett, kristof.beyls, hiraditya, rkruppe, psnobl, danielkiss, cfe-commits, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D77054
2020-04-06 10:07:08 +01:00