zig/lib/compiler_rt/udivti3.zig
Andrew Kelley 0556a2ba53 compiler-rt: finish cleanups
Finishes cleanups that I started in other commits in this branch.

 * Use common.linkage for all exports instead of redoing the logic in
   each file.
 * Remove pointless `@setRuntimeSafety` calls.
 * Avoid redundantly exporting multiple versions of functions. For
   example, if PPC wants `ceilf128` then don't also export `ceilq`;
   similarly if ARM wants `__aeabi_ddiv` then don't also export
   `__divdf3`.
 * Use `inline` for helper functions instead of making inline calls at
   callsites.
2022-06-17 18:10:00 -07:00

39 lines
1.2 KiB
Zig

const std = @import("std");
const builtin = @import("builtin");
const udivmod = @import("udivmod.zig").udivmod;
const arch = builtin.cpu.arch;
const common = @import("common.zig");
pub const panic = common.panic;
comptime {
if (builtin.os.tag == .windows) {
switch (arch) {
.i386 => {
@export(__udivti3, .{ .name = "__udivti3", .linkage = common.linkage });
},
.x86_64 => {
// The "ti" functions must use Vector(2, u64) parameter types to adhere to the ABI
// that LLVM expects compiler-rt to have.
@export(__udivti3_windows_x86_64, .{ .name = "__udivti3", .linkage = common.linkage });
},
else => {},
}
if (arch.isAARCH64()) {
@export(__udivti3, .{ .name = "__udivti3", .linkage = common.linkage });
}
} else {
@export(__udivti3, .{ .name = "__udivti3", .linkage = common.linkage });
}
}
pub fn __udivti3(a: u128, b: u128) callconv(.C) u128 {
return udivmod(u128, a, b, null);
}
const v128 = std.meta.Vector(2, u64);
fn __udivti3_windows_x86_64(a: v128, b: v128) callconv(.C) v128 {
return @bitCast(v128, udivmod(u128, @bitCast(u128, a), @bitCast(u128, b), null));
}