From ceee7f34f5cfae23f8b9f43314cf81cf26150b4f Mon Sep 17 00:00:00 2001 From: Alex Crichton Date: Thu, 13 Dec 2018 12:50:42 -0800 Subject: rustc: Add an unstable `simd_select_bitmask` intrinsic This is going to be required for binding a number of AVX-512 intrinsics in the `stdsimd` repository, and this intrinsic is the same as `simd_select` except that it takes a bitmask as the first argument instead of a SIMD vector. This bitmask is then transmuted into a `` argument, depending on how many bits it is. cc rust-lang-nursery/stdsimd#310 --- src/librustc_codegen_llvm/intrinsic.rs | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'src/librustc_codegen_llvm') diff --git a/src/librustc_codegen_llvm/intrinsic.rs b/src/librustc_codegen_llvm/intrinsic.rs index 8b26ada1576..e229f8d95cd 100644 --- a/src/librustc_codegen_llvm/intrinsic.rs +++ b/src/librustc_codegen_llvm/intrinsic.rs @@ -1192,7 +1192,7 @@ fn generic_simd_intrinsic( return Ok(bx.select(m_i1s, args[1].immediate(), args[2].immediate())); } - // every intrinsic takes a SIMD vector as its first argument + // every intrinsic below takes a SIMD vector as its first argument require_simd!(arg_tys[0], "input"); let in_ty = arg_tys[0]; let in_elem = arg_tys[0].simd_type(tcx); @@ -1296,6 +1296,7 @@ fn generic_simd_intrinsic( if name == "simd_select" { let m_elem_ty = in_elem; let m_len = in_len; + require_simd!(arg_tys[1], "argument"); let v_len = arg_tys[1].simd_size(tcx); require!(m_len == v_len, "mismatched lengths: mask length `{}` != other vector length `{}`", -- cgit 1.4.1-3-g733a5