diff options
Diffstat (limited to 'src/tools/miri/src/shims/intrinsics/simd.rs')
| -rw-r--r-- | src/tools/miri/src/shims/intrinsics/simd.rs | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/src/tools/miri/src/shims/intrinsics/simd.rs b/src/tools/miri/src/shims/intrinsics/simd.rs index f2e16521290..114c66253f7 100644 --- a/src/tools/miri/src/shims/intrinsics/simd.rs +++ b/src/tools/miri/src/shims/intrinsics/simd.rs @@ -421,14 +421,18 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> { } } #[rustfmt::skip] - "cast" | "as" => { + "cast" | "as" | "cast_ptr" | "expose_addr" | "from_exposed_addr" => { let [op] = check_arg_count(args)?; let (op, op_len) = this.operand_to_simd(op)?; let (dest, dest_len) = this.place_to_simd(dest)?; assert_eq!(dest_len, op_len); + let unsafe_cast = intrinsic_name == "cast"; let safe_cast = intrinsic_name == "as"; + let ptr_cast = intrinsic_name == "cast_ptr"; + let expose_cast = intrinsic_name == "expose_addr"; + let from_exposed_cast = intrinsic_name == "from_exposed_addr"; for i in 0..dest_len { let op = this.read_immediate(&this.mplace_index(&op, i)?.into())?; @@ -436,19 +440,31 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> { let val = match (op.layout.ty.kind(), dest.layout.ty.kind()) { // Int-to-(int|float): always safe - (ty::Int(_) | ty::Uint(_), ty::Int(_) | ty::Uint(_) | ty::Float(_)) => + (ty::Int(_) | ty::Uint(_), ty::Int(_) | ty::Uint(_) | ty::Float(_)) if safe_cast || unsafe_cast => this.int_to_int_or_float(&op, dest.layout.ty)?, // Float-to-float: always safe - (ty::Float(_), ty::Float(_)) => + (ty::Float(_), ty::Float(_)) if safe_cast || unsafe_cast => this.float_to_float_or_int(&op, dest.layout.ty)?, // Float-to-int in safe mode (ty::Float(_), ty::Int(_) | ty::Uint(_)) if safe_cast => this.float_to_float_or_int(&op, dest.layout.ty)?, // Float-to-int in unchecked mode - (ty::Float(FloatTy::F32), ty::Int(_) | ty::Uint(_)) if !safe_cast => + (ty::Float(FloatTy::F32), ty::Int(_) | ty::Uint(_)) if unsafe_cast => this.float_to_int_unchecked(op.to_scalar().to_f32()?, dest.layout.ty)?.into(), - (ty::Float(FloatTy::F64), ty::Int(_) | ty::Uint(_)) if !safe_cast => + (ty::Float(FloatTy::F64), ty::Int(_) | ty::Uint(_)) if unsafe_cast => this.float_to_int_unchecked(op.to_scalar().to_f64()?, dest.layout.ty)?.into(), + // Ptr-to-ptr cast + (ty::RawPtr(..), ty::RawPtr(..)) if ptr_cast => { + this.ptr_to_ptr(&op, dest.layout.ty)? + } + // Ptr/Int casts + (ty::RawPtr(..), ty::Int(_) | ty::Uint(_)) if expose_cast => { + this.pointer_expose_address_cast(&op, dest.layout.ty)? + } + (ty::Int(_) | ty::Uint(_), ty::RawPtr(..)) if from_exposed_cast => { + this.pointer_from_exposed_address_cast(&op, dest.layout.ty)? + } + // Error otherwise _ => throw_unsup_format!( "Unsupported SIMD cast from element type {from_ty} to {to_ty}", @@ -585,9 +601,9 @@ fn simd_element_to_bool(elem: ImmTy<'_, Provenance>) -> InterpResult<'_, bool> { }) } -fn simd_bitmask_index(idx: u32, vec_len: u32, endianess: Endian) -> u32 { +fn simd_bitmask_index(idx: u32, vec_len: u32, endianness: Endian) -> u32 { assert!(idx < vec_len); - match endianess { + match endianness { Endian::Little => idx, #[allow(clippy::integer_arithmetic)] // idx < vec_len Endian::Big => vec_len - 1 - idx, // reverse order of bits |