Function cast [src]

Prototype

pub fn cast( self: *WipFunction, tag: Instruction.Tag, val: Value, ty: Type, name: []const u8, ) Allocator.Error!Value

Parameters

self: *WipFunctiontag: Instruction.Tagval: Valuety: Typename: []const u8

Source

  pub fn cast(
    self: *WipFunction,
    tag: Instruction.Tag,
    val: Value,
    ty: Type,
    name: []const u8,
) Allocator.Error!Value {
    switch (tag) {
        .addrspacecast,
        .bitcast,
        .fpext,
        .fptosi,
        .fptoui,
        .fptrunc,
        .inttoptr,
        .ptrtoint,
        .sext,
        .sitofp,
        .trunc,
        .uitofp,
        .zext,
        => {},
        else => unreachable,
    }
    if (val.typeOfWip(self) == ty) return val;
    try self.ensureUnusedExtraCapacity(1, Instruction.Cast, 0);
    const instruction = try self.addInst(name, .{
        .tag = tag,
        .data = self.addExtraAssumeCapacity(Instruction.Cast{
            .val = val,
            .type = ty,
        }),
    });
    return instruction.toValue();
}  