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On 07/09/2021 11:15, Christophe Lyon wrote:
This patch series addresses PR 100757 and 101325 by representing
vectors of predicates (MVE VPR.P0 register) as vectors of booleans
rather than using HImode.

As this implies a lot of mostly mechanical changes, I have tried to
split the patches in a way that should help reviewers, but the split
is a bit artificial.

Patches 1-3 add new tests.

Patches 4-6 are small independent improvements.

Patch 7 implements the predicate qualifier, but does not change any
builtin yet.

Patch 8 is the first of the two main patches, and uses the new
qualifier to describe the vcmp and vpsel builtins that are useful for
auto-vectorization of comparisons.

Patch 9 is the second main patch, which fixes the vcond_mask expander.

Patches 10-13 convert almost all the remaining builtins with HI
operands to use the predicate qualifier.  After these, there are still
a few builtins with HI operands left, about which I am not sure: vctp,
vpnot, load-gather and store-scatter with v2di operands.  In fact,
patches 11/12 update some STR/LDR qualifiers in a way that breaks
these v2di builtins although existing tests still pass.

Christophe Lyon (13):
   arm: Add new tests for comparison vectorization with Neon and MVE
   arm: Add tests for PR target/100757
   arm: Add test for PR target/101325
   arm: Add GENERAL_AND_VPR_REGS regclass
   arm: Add support for VPR_REG in arm_class_likely_spilled_p
   arm: Fix mve_vmvnq_n_<supf><mode> argument mode
   arm: Implement MVE predicates as vectors of booleans
   arm: Implement auto-vectorized MVE comparisons with vectors of boolean
     predicates
   arm: Fix vcond_mask expander for MVE (PR target/100757)
   arm: Convert remaining MVE vcmp builtins to predicate qualifiers
   arm: Convert more MVE builtins to predicate qualifiers
   arm: Convert more load/store MVE builtins to predicate qualifiers
   arm: Convert more MVE/CDE builtins to predicate qualifiers

  gcc/config/arm/arm-builtins.c                 | 228 +++--
  gcc/config/arm/arm-modes.def                  |   5 +
  gcc/config/arm/arm-protos.h                   |   3 +-
  gcc/config/arm/arm-simd-builtin-types.def     |   4 +
  gcc/config/arm/arm.c                          | 128 ++-
  gcc/config/arm/arm.h                          |   5 +-
  gcc/config/arm/arm_mve_builtins.def           | 746 ++++++++--------
  gcc/config/arm/iterators.md                   |   5 +
  gcc/config/arm/mve.md                         | 823 ++++++++++--------
  gcc/config/arm/neon.md                        |  39 +
  gcc/config/arm/vec-common.md                  |  52 --
  gcc/simplify-rtx.c                            |   7 +
  .../arm/acle/cde-mve-full-assembly.c          | 264 +++---
  .../gcc.target/arm/simd/mve-vcmp-f32-2.c      |  32 +
  .../gcc.target/arm/simd/neon-compare-1.c      |  78 ++
  .../gcc.target/arm/simd/neon-compare-2.c      |  13 +
  .../gcc.target/arm/simd/neon-compare-3.c      |  14 +
  .../arm/simd/neon-compare-scalar-1.c          |  57 ++
  .../gcc.target/arm/simd/neon-vcmp-f16.c       |  12 +
  .../gcc.target/arm/simd/neon-vcmp-f32-2.c     |  15 +
  .../gcc.target/arm/simd/neon-vcmp-f32-3.c     |  12 +
  .../gcc.target/arm/simd/neon-vcmp-f32.c       |  12 +
  gcc/testsuite/gcc.target/arm/simd/neon-vcmp.c |  22 +
  .../gcc.target/arm/simd/pr100757-2.c          |  20 +
  .../gcc.target/arm/simd/pr100757-3.c          |  20 +
  .../gcc.target/arm/simd/pr100757-4.c          |  19 +
  gcc/testsuite/gcc.target/arm/simd/pr100757.c  |  19 +
  gcc/testsuite/gcc.target/arm/simd/pr101325.c  |  14 +
  28 files changed, 1581 insertions(+), 1087 deletions(-)
  create mode 100644 gcc/testsuite/gcc.target/arm/simd/mve-vcmp-f32-2.c
  create mode 100644 gcc/testsuite/gcc.target/arm/simd/neon-compare-1.c
  create mode 100644 gcc/testsuite/gcc.target/arm/simd/neon-compare-2.c
  create mode 100644 gcc/testsuite/gcc.target/arm/simd/neon-compare-3.c
  create mode 100644 gcc/testsuite/gcc.target/arm/simd/neon-compare-scalar-1.c
  create mode 100644 gcc/testsuite/gcc.target/arm/simd/neon-vcmp-f16.c
  create mode 100644 gcc/testsuite/gcc.target/arm/simd/neon-vcmp-f32-2.c
  create mode 100644 gcc/testsuite/gcc.target/arm/simd/neon-vcmp-f32-3.c
  create mode 100644 gcc/testsuite/gcc.target/arm/simd/neon-vcmp-f32.c
  create mode 100644 gcc/testsuite/gcc.target/arm/simd/neon-vcmp.c
  create mode 100644 gcc/testsuite/gcc.target/arm/simd/pr100757-2.c
  create mode 100644 gcc/testsuite/gcc.target/arm/simd/pr100757-3.c
  create mode 100644 gcc/testsuite/gcc.target/arm/simd/pr100757-4.c
  create mode 100644 gcc/testsuite/gcc.target/arm/simd/pr100757.c
  create mode 100644 gcc/testsuite/gcc.target/arm/simd/pr101325.c

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