Method extract_lane_op

winch/codegen/src/codegen/context.rs:543–590

Prepares arguments for emitting an extract lane operation.

(
        &mut self,
        masm: &mut M,
        kind: ExtractLaneKind,
        emit: F,
    )

    /// Prepares arguments for emitting an extract lane operation.
    pub fn extract_lane_op<F, M>(
        &mut self,
        masm: &mut M,
        kind: ExtractLaneKind,
        emit: F,
    ) -> Result<()>
    where
        F: FnOnce(&mut M, Reg, WritableReg, ExtractLaneKind) -> Result<()>,
        M: MacroAssembler,
    {
        let src = self.pop_to_reg(masm, None)?;
        let dst = writable!(match kind {
            ExtractLaneKind::I8x16S
            | ExtractLaneKind::I8x16U
            | ExtractLaneKind::I16x8S
            | ExtractLaneKind::I16x8U
            | ExtractLaneKind::I32x4
            | ExtractLaneKind::I64x2 => self.any_gpr(masm)?,
            ExtractLaneKind::F32x4 | ExtractLaneKind::F64x2 => src.reg,
        });

        emit(masm, src.reg, dst, kind)?;

        match kind {
            ExtractLaneKind::I8x16S
            | ExtractLaneKind::I8x16U
            | ExtractLaneKind::I16x8S
            | ExtractLaneKind::I16x8U
            | ExtractLaneKind::I32x4
            | ExtractLaneKind::I64x2 => self.free_reg(src),
            _ => (),
        }

        let dst = dst.to_reg();
        let dst = match kind {
            ExtractLaneKind::I8x16S
            | ExtractLaneKind::I8x16U
            | ExtractLaneKind::I16x8S
            | ExtractLaneKind::I16x8U
            | ExtractLaneKind::I32x4 => TypedReg::i32(dst),
            ExtractLaneKind::I64x2 => TypedReg::i64(dst),
            ExtractLaneKind::F32x4 => TypedReg::f32(dst),
            ExtractLaneKind::F64x2 => TypedReg::f64(dst),
        };

        self.stack.push(Val::Reg(dst));
        Ok(())
    }

    /// Prepares arguments for emitting a replace lane operation.
    pub fn replace_lane_op<F, M>(