On Fri, Jan 14, 2022 at 2:18 PM Christophe Lyon via Gcc-patches <gcc-patches@gcc.gnu.org> wrote: > > Hi, > > I hadn't realized we are moving to stage 4 this week-end :-( > > The PRs I'm fixing are P3, but without these fixes MVE support is badly > broken, so I think I would be really good to fix that before the buggy > version becomes part of an actual release. > Anyway I posted v1 of the patches during stage1, so it should still be OK > if they are accepted as-is ?
In the end it's up to the target maintainers to weight the risk of breakage vs. the risk of not usefulness ;) But stage3 is where the "was posted during stage1" rule can easily apply - at some point we have to stop with such general ruling. Richard. > Thanks, > > Christophe > > On Thu, Jan 13, 2022 at 3:58 PM Christophe Lyon via Gcc-patches < > gcc-patches@gcc.gnu.org> wrote: > > > > > This is v3 of this patch series, fixing issues I discovered before > > committing v2 (which had been approved). > > > > Thanks a lot to Richard Sandiford for his help. > > > > The changes v2 -> v3 are: > > > > Patch 4: Fix arm_hard_regno_nregs and CLASS_MAX_NREGS to support VPR. > > > > Patch 7: Changes to the underlying representation of vectors of > > booleans to account for the different expectations between AArch64/SVE > > and Arm/MVE. > > > > Patch 8: Re-use and extend existing thumb2_movhi* patterns instead of > > duplicating them in mve_mov<mode>. This requires the introduction of a > > new constraint to match a constant vector of booleans. Add a new RTL > > test. > > > > Patch 9: Introduce check_effective_target_arm_mve and skip > > gcc.dg/signbit-2.c, because with MVE there is no fallback architecture > > unlike SVE or AVX512. > > > > Patch 12: Update less load/store MVE builtins > > (mve_vldrdq_gather_base_z_<supf>v2di, > > mve_vldrdq_gather_offset_z_<supf>v2di, > > mve_vldrdq_gather_shifted_offset_z_<supf>v2di, > > mve_vstrdq_scatter_base_p_<supf>v2di, > > mve_vstrdq_scatter_offset_p_<supf>v2di, > > mve_vstrdq_scatter_offset_p_<supf>v2di_insn, > > mve_vstrdq_scatter_shifted_offset_p_<supf>v2di, > > mve_vstrdq_scatter_shifted_offset_p_<supf>v2di_insn, > > mve_vstrdq_scatter_base_wb_p_<supf>v2di, > > mve_vldrdq_gather_base_wb_z_<supf>v2di, > > mve_vldrdq_gather_base_nowb_z_<supf>v2di, > > mve_vldrdq_gather_base_wb_z_<supf>v2di_insn) for which we keep HI mode > > for vpr_register_operand. > > > > Patch 13: No need to update > > gcc.target/arm/acle/cde-mve-full-assembly.c anymore since we re-use > > the mov pattern that emits '@ movhi' in the assembly. > > > > Patch 15: This is a new patch to fix a problem I noticed during this > > v2->v3 update. > > > > > > > > I'll squash patch 2 with patch 9 and patch 3 with patch 8. > > > > Original text: > > > > 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 (15): > > arm: Add new tests for comparison vectorization with Neon and MVE > > arm: Add tests for PR target/100757 > > arm: Add tests 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 > > arm: Add VPR_REG to ALL_REGS > > arm: Fix constraint check for V8HI in mve_vector_mem_operand > > > > gcc/config/aarch64/aarch64-modes.def | 8 +- > > gcc/config/arm/arm-builtins.c | 224 +++-- > > gcc/config/arm/arm-builtins.h | 4 +- > > gcc/config/arm/arm-modes.def | 8 + > > gcc/config/arm/arm-protos.h | 4 +- > > gcc/config/arm/arm-simd-builtin-types.def | 4 + > > gcc/config/arm/arm.c | 169 ++-- > > gcc/config/arm/arm.h | 9 +- > > gcc/config/arm/arm_mve_builtins.def | 746 ++++++++-------- > > gcc/config/arm/constraints.md | 6 + > > gcc/config/arm/iterators.md | 6 + > > gcc/config/arm/mve.md | 795 ++++++++++-------- > > gcc/config/arm/neon.md | 39 + > > gcc/config/arm/vec-common.md | 52 -- > > gcc/config/arm/vfp.md | 34 +- > > gcc/doc/sourcebuild.texi | 4 + > > gcc/emit-rtl.c | 20 +- > > gcc/genmodes.c | 81 +- > > gcc/machmode.def | 2 +- > > gcc/rtx-vector-builder.c | 4 +- > > gcc/simplify-rtx.c | 34 +- > > gcc/testsuite/gcc.dg/signbit-2.c | 1 + > > .../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.target/arm/simd/pr101325-2.c | 19 + > > gcc/testsuite/gcc.target/arm/simd/pr101325.c | 14 + > > gcc/testsuite/lib/target-supports.exp | 15 +- > > gcc/varasm.c | 7 +- > > 40 files changed, 1635 insertions(+), 1019 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/pr101325-2.c > > create mode 100644 gcc/testsuite/gcc.target/arm/simd/pr101325.c > > > > -- > > 2.25.1 > > > >
