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llvm: Use correct type for splat mask #156202

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llvm: Use correct type for splat mask #156202

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5 changes: 3 additions & 2 deletions compiler/rustc_codegen_llvm/src/intrinsic.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2086,7 +2086,7 @@ fn generic_simd_intrinsic<'ll, 'tcx>(
}

if name == sym::simd_splat {
let (_out_len, out_ty) = require_simd!(ret_ty, SimdReturn);
let (out_len, out_ty) = require_simd!(ret_ty, SimdReturn);

require!(
args[0].layout.ty == out_ty,
Expand All @@ -2105,7 +2105,8 @@ fn generic_simd_intrinsic<'ll, 'tcx>(

// `shufflevector <N x elem> v0, <N x elem> poison, <N x i32> zeroinitializer`
// The masks is all zeros, so this splats lane 0 (which has our element in it).
let splat = bx.shuffle_vector(v0, poison_vec, bx.const_null(llret_ty));
let mask_ty = bx.type_vector(bx.type_i32(), out_len);
let splat = bx.shuffle_vector(v0, poison_vec, bx.const_null(mask_ty));

return Ok(splat);
}
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