Zig 0.17.0-dev (Split by item)

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x86_fp80ConstAssumeCapacity

Builder.x86_fp80ConstAssumeCapacity

fn x86_fp80ConstAssumeCapacity(self: *Builder, val: f80) Constant

File

lib/std/zig/llvm/Builder.zig:11332

Code

fn x86_fp80ConstAssumeCapacity(self: *Builder, val: f80) Constant {
    const Adapter = struct {
        builder: *const Builder,
        pub fn hash(_: @This(), key: f80) u32 {
            return @truncate(std.hash.Wyhash.hash(
                comptime std.hash.int(@backingInt(Constant.Tag.x86_fp80)),
                std.mem.asBytes(&key)[0..10],
            ));
        }
        pub fn eql(ctx: @This(), lhs_key: f80, _: void, rhs_index: usize) bool {
            if (ctx.builder.constant_items.items(.tag)[rhs_index] != .x86_fp80) return false;
            const rhs_data = ctx.builder.constant_items.items(.data)[rhs_index];
            const rhs_extra = ctx.builder.constantExtraData(Constant.Fp80, rhs_data);
            return @as(u80, @bitCast(lhs_key)) == @as(u80, rhs_extra.hi) << 64 |
                @as(u80, rhs_extra.lo_hi) << 32 | rhs_extra.lo_lo;
        }
    };
    const gop = self.constant_map.getOrPutAssumeCapacityAdapted(val, Adapter{ .builder = self });
    if (!gop.found_existing) {
        gop.key_ptr.* = {};
        gop.value_ptr.* = {};
        self.constant_items.appendAssumeCapacity(.{
            .tag = .x86_fp80,
            .data = self.addConstantExtraAssumeCapacity(Constant.Fp80{
                .lo_lo = @truncate(@as(u80, @bitCast(val))),
                .lo_hi = @truncate(@as(u80, @bitCast(val)) >> 32),
                .hi = @intCast(@as(u80, @bitCast(val)) >> 64),
            }),
        });
    }
    return @fromBackingInt(@intCast(gop.index));
}