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Implement the SIMD funnel shift intrinsics - #1708

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Firenezz wants to merge 2 commits into
rust-lang:mainfrom
Firenezz:fix/simd_funnel_shift
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Firenezz wants to merge 2 commits into
rust-lang:mainfrom
Firenezz:fix/simd_funnel_shift

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@Firenezz

@Firenezz Firenezz commented Oct 5, 2026 •

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This PR adds implementation for SIMD funnel shift intrinsics. It:

  • Implements simd_funnel_shl / simd_funnel_shr in src/intrinsics/simd.rs according to the Rust intrinsic spec
  • Re-enables the tests in scripts/test_rustc_tests.sh for tests/ui/simd/intrinsic/generic-arithmetic-pass.rs

Tests

ran:

  • ./test.sh
  • ./scripts/test_rustc_tests.sh
  • cargo fmt

Fixes: #1696

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Implement simd_funnel_shl and simd_funnel_shr intrinsics

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