llvm-project.git/llvm/test/CodeGen/WebAssembly/simd-extending.ll, branch users/nico/python-2

[WebAssembly] Re-land 8392bf6000ad

2023-06-09T15:42:27+00:00

Correctly handle single-element vectors to fix an assertion failure. Add tests
that were missing from the original commit.

Differential Revision: D151782

Revert "Improve WebAssembly vector bitmask, mask reduction, and extending"

2023-06-08T21:36:29+00:00

This reverts commit 8392bf6000ad039bd0e55383d40a05ddf7b4af13.

The commit missed some edge cases that led to crashes. Reverting to resolve
downstream breakage while a fix is pending.

Improve WebAssembly vector bitmask, mask reduction, and extending

2023-06-07T17:20:22+00:00

This is inspired by a recently filed Rust issue noting poor codegen for vector masks (https://github.com/rust-lang/portable-simd/issues/351).

Reviewed By: tlively

Differential Revision: https://reviews.llvm.org/D151782

[WebAssembly] Improve codegen for shuffles with undefined lane indices

2022-09-13T23:03:18+00:00

For undefined lane indices, fill the mask with {0..N} instead of zeros to allow
further reduction to word/dword shuffle on the VM.

Reviewed By: tlively, penzn

Differential Revision: https://reviews.llvm.org/D133473

[WebAssembly] Legalize vector types by widening

2021-08-19T19:07:33+00:00

The default legalization of unsupported vector types is to promote the integers
in each lane, which leads to extra sign or zero extending and masking when
moving data into and out of vectors. Switch our preferred type legalization from
the default to vector widening, which keeps the data in the low lanes of the
vector rather than in the low bits of each lane. The unused high lanes can be
ignored.

Half-wide vectors are now loaded from memory into the low 64 bits of the v128
rather than spread out among the lanes. As a result, v128.load64_splat is a much
more common operation, so add new patterns to support it.

Differential Revision: https://reviews.llvm.org/D107502

[WebAssembly] Remove datalayout strings from llc tests

2021-07-14T18:17:08+00:00

The data layout strings do not have any effect on llc tests and will become
misleadingly out of date as we continue to update the canonical data layout, so
remove them from the tests.

Differential Revision: https://reviews.llvm.org/D105842

[WebAssembly] Codegen for i64x2.extend_{low,high}_i32x4_{s,u}

2021-04-14T20:43:09+00:00

Removes the builtins and intrinsics used to opt in to using these instructions
and replaces them with normal ISel patterns now that they are no longer
prototypes.

Differential Revision: https://reviews.llvm.org/D100402

[WebAssembly] Finalize SIMD names and opcodes

2021-03-18T18:21:25+00:00

Updates the names (e.g. widen => extend, saturate => sat) and opcodes of all
SIMD instructions to match the finalized SIMD spec. Deliberately does not change
the public interface in wasm_simd128.h yet; that will require more care.

Depends on D98466.

Differential Revision: https://reviews.llvm.org/D98676