Commit f2608df0fb
Changed files (7)
lib
lib/std/special/compiler_rt/clzdi2_test.zig
@@ -2,12 +2,8 @@ const clz = @import("count0bits.zig");
const testing = @import("std").testing;
fn test__clzdi2(a: u64, expected: i64) !void {
- // XXX At high optimization levels this test may be horribly miscompiled if
- // one of the naked implementations is selected.
- var nakedClzdi2 = clz.__clzdi2;
- var actualClzdi2 = @ptrCast(fn (a: i64) callconv(.C) i32, nakedClzdi2);
var x = @bitCast(i64, a);
- var result = actualClzdi2(x);
+ var result = clz.__clzdi2(x);
try testing.expectEqual(expected, result);
}
lib/std/special/compiler_rt/clzti2_test.zig
@@ -2,12 +2,8 @@ const clz = @import("count0bits.zig");
const testing = @import("std").testing;
fn test__clzti2(a: u128, expected: i64) !void {
- // XXX At high optimization levels this test may be horribly miscompiled if
- // one of the naked implementations is selected.
- var nakedClzti2 = clz.__clzti2;
- var actualClzti2 = @ptrCast(fn (a: i128) callconv(.C) i32, nakedClzti2);
var x = @bitCast(i128, a);
- var result = actualClzti2(x);
+ var result = clz.__clzti2(x);
try testing.expectEqual(expected, result);
}
lib/std/special/compiler_rt/count0bits.zig
@@ -2,10 +2,13 @@ const std = @import("std");
const builtin = @import("builtin");
// clz - count leading zeroes
-// - clzXi2_generic for little endian
+// - clzXi2_generic for unoptimized little and big endian
// - __clzsi2_thumb1: assume a != 0
// - __clzsi2_arm32: assume a != 0
+// ctz - count trailing zeroes
+// - ctzXi2_generic for unoptimized little and big endian
+
fn clzXi2_generic(comptime T: type) fn (a: T) callconv(.C) i32 {
return struct {
fn f(a: T) callconv(.C) i32 {
@@ -139,22 +142,51 @@ pub const __clzsi2 = impl: {
}
};
-pub const __clzdi2 = impl: {
- switch (builtin.cpu.arch) {
- // TODO architecture optimised versions
- else => break :impl clzXi2_generic(i64),
- }
-};
+pub const __clzdi2 = clzXi2_generic(i64);
-pub const __clzti2 = impl: {
- switch (builtin.cpu.arch) {
- // TODO architecture optimised versions
- else => break :impl clzXi2_generic(i128),
- }
-};
+pub const __clzti2 = clzXi2_generic(i128);
+
+fn ctzXi2_generic(comptime T: type) fn (a: T) callconv(.C) i32 {
+ return struct {
+ fn f(a: T) callconv(.C) i32 {
+ @setRuntimeSafety(builtin.is_test);
+
+ var x = switch (@bitSizeOf(T)) {
+ 32 => @bitCast(u32, a),
+ 64 => @bitCast(u64, a),
+ 128 => @bitCast(u128, a),
+ else => unreachable,
+ };
+ var n: T = 1;
+ // Number of trailing zeroes as binary search, from Hacker's Delight
+ var mask: @TypeOf(x) = std.math.maxInt(@TypeOf(x));
+ comptime var shift = @bitSizeOf(T);
+ if (x == 0) return shift;
+ inline while (shift > 1) {
+ shift = shift >> 1;
+ mask = mask >> shift;
+ if ((x & mask) == 0) {
+ n = n + shift;
+ x = x >> shift;
+ }
+ }
+ return @intCast(i32, n - @bitCast(T, (x & 1)));
+ }
+ }.f;
+}
+
+pub const __ctzsi2 = ctzXi2_generic(i32);
+
+pub const __ctzdi2 = ctzXi2_generic(i64);
+
+pub const __ctzti2 = ctzXi2_generic(i128);
test {
_ = @import("clzsi2_test.zig");
_ = @import("clzdi2_test.zig");
_ = @import("clzti2_test.zig");
+
+ _ = @import("ctzsi2_test.zig");
+ _ = @import("ctzdi2_test.zig");
+ _ = @import("ctzti2_test.zig");
}
lib/std/special/compiler_rt/ctzdi2_test.zig
@@ -0,0 +1,325 @@
+const ctz = @import("count0bits.zig");
+const testing = @import("std").testing;
+
+fn test__ctzdi2(a: u64, expected: i32) !void {
+ var x = @bitCast(i64, a);
+ var result = ctz.__ctzdi2(x);
+ try testing.expectEqual(expected, result);
+}
+
+test "ctzdi2" {
+ try test__ctzdi2(0x00000000_00000001, 0);
+ try test__ctzdi2(0x00000000_00000002, 1);
+ try test__ctzdi2(0x00000000_00000003, 0);
+ try test__ctzdi2(0x00000000_00000004, 2);
+ try test__ctzdi2(0x00000000_00000005, 0);
+ try test__ctzdi2(0x00000000_00000006, 1);
+ try test__ctzdi2(0x00000000_00000007, 0);
+ try test__ctzdi2(0x00000000_00000008, 3);
+ try test__ctzdi2(0x00000000_00000009, 0);
+ try test__ctzdi2(0x00000000_0000000A, 1);
+ try test__ctzdi2(0x00000000_0000000B, 0);
+ try test__ctzdi2(0x00000000_0000000C, 2);
+ try test__ctzdi2(0x00000000_0000000D, 0);
+ try test__ctzdi2(0x00000000_0000000E, 1);
+ try test__ctzdi2(0x00000000_0000000F, 0);
+ try test__ctzdi2(0x00000000_00000010, 4);
+ try test__ctzdi2(0x00000000_00000011, 0);
+ try test__ctzdi2(0x00000000_00000012, 1);
+ try test__ctzdi2(0x00000000_00000013, 0);
+ try test__ctzdi2(0x00000000_00000014, 2);
+ try test__ctzdi2(0x00000000_00000015, 0);
+ try test__ctzdi2(0x00000000_00000016, 1);
+ try test__ctzdi2(0x00000000_00000017, 0);
+ try test__ctzdi2(0x00000000_00000018, 3);
+ try test__ctzdi2(0x00000000_00000019, 0);
+ try test__ctzdi2(0x00000000_0000001A, 1);
+ try test__ctzdi2(0x00000000_0000001B, 0);
+ try test__ctzdi2(0x00000000_0000001C, 2);
+ try test__ctzdi2(0x00000000_0000001D, 0);
+ try test__ctzdi2(0x00000000_0000001E, 1);
+ try test__ctzdi2(0x00000000_0000001F, 0);
+ try test__ctzdi2(0x00000000_00000020, 5);
+ try test__ctzdi2(0x00000000_00000021, 0);
+ try test__ctzdi2(0x00000000_00000022, 1);
+ try test__ctzdi2(0x00000000_00000023, 0);
+ try test__ctzdi2(0x00000000_00000024, 2);
+ try test__ctzdi2(0x00000000_00000025, 0);
+ try test__ctzdi2(0x00000000_00000026, 1);
+ try test__ctzdi2(0x00000000_00000027, 0);
+ try test__ctzdi2(0x00000000_00000028, 3);
+ try test__ctzdi2(0x00000000_00000029, 0);
+ try test__ctzdi2(0x00000000_0000002A, 1);
+ try test__ctzdi2(0x00000000_0000002B, 0);
+ try test__ctzdi2(0x00000000_0000002C, 2);
+ try test__ctzdi2(0x00000000_0000002D, 0);
+ try test__ctzdi2(0x00000000_0000002E, 1);
+ try test__ctzdi2(0x00000000_0000002F, 0);
+ try test__ctzdi2(0x00000000_00000030, 4);
+ try test__ctzdi2(0x00000000_00000031, 0);
+ try test__ctzdi2(0x00000000_00000032, 1);
+ try test__ctzdi2(0x00000000_00000033, 0);
+ try test__ctzdi2(0x00000000_00000034, 2);
+ try test__ctzdi2(0x00000000_00000035, 0);
+ try test__ctzdi2(0x00000000_00000036, 1);
+ try test__ctzdi2(0x00000000_00000037, 0);
+ try test__ctzdi2(0x00000000_00000038, 3);
+ try test__ctzdi2(0x00000000_00000039, 0);
+ try test__ctzdi2(0x00000000_0000003A, 1);
+ try test__ctzdi2(0x00000000_0000003B, 0);
+ try test__ctzdi2(0x00000000_0000003C, 2);
+ try test__ctzdi2(0x00000000_0000003D, 0);
+ try test__ctzdi2(0x00000000_0000003E, 1);
+ try test__ctzdi2(0x00000000_0000003F, 0);
+ try test__ctzdi2(0x00000000_00000040, 6);
+ try test__ctzdi2(0x00000000_00000041, 0);
+ try test__ctzdi2(0x00000000_00000042, 1);
+ try test__ctzdi2(0x00000000_00000043, 0);
+ try test__ctzdi2(0x00000000_00000044, 2);
+ try test__ctzdi2(0x00000000_00000045, 0);
+ try test__ctzdi2(0x00000000_00000046, 1);
+ try test__ctzdi2(0x00000000_00000047, 0);
+ try test__ctzdi2(0x00000000_00000048, 3);
+ try test__ctzdi2(0x00000000_00000049, 0);
+ try test__ctzdi2(0x00000000_0000004A, 1);
+ try test__ctzdi2(0x00000000_0000004B, 0);
+ try test__ctzdi2(0x00000000_0000004C, 2);
+ try test__ctzdi2(0x00000000_0000004D, 0);
+ try test__ctzdi2(0x00000000_0000004E, 1);
+ try test__ctzdi2(0x00000000_0000004F, 0);
+ try test__ctzdi2(0x00000000_00000050, 4);
+ try test__ctzdi2(0x00000000_00000051, 0);
+ try test__ctzdi2(0x00000000_00000052, 1);
+ try test__ctzdi2(0x00000000_00000053, 0);
+ try test__ctzdi2(0x00000000_00000054, 2);
+ try test__ctzdi2(0x00000000_00000055, 0);
+ try test__ctzdi2(0x00000000_00000056, 1);
+ try test__ctzdi2(0x00000000_00000057, 0);
+ try test__ctzdi2(0x00000000_00000058, 3);
+ try test__ctzdi2(0x00000000_00000059, 0);
+ try test__ctzdi2(0x00000000_0000005A, 1);
+ try test__ctzdi2(0x00000000_0000005B, 0);
+ try test__ctzdi2(0x00000000_0000005C, 2);
+ try test__ctzdi2(0x00000000_0000005D, 0);
+ try test__ctzdi2(0x00000000_0000005E, 1);
+ try test__ctzdi2(0x00000000_0000005F, 0);
+ try test__ctzdi2(0x00000000_00000060, 5);
+ try test__ctzdi2(0x00000000_00000061, 0);
+ try test__ctzdi2(0x00000000_00000062, 1);
+ try test__ctzdi2(0x00000000_00000063, 0);
+ try test__ctzdi2(0x00000000_00000064, 2);
+ try test__ctzdi2(0x00000000_00000065, 0);
+ try test__ctzdi2(0x00000000_00000066, 1);
+ try test__ctzdi2(0x00000000_00000067, 0);
+ try test__ctzdi2(0x00000000_00000068, 3);
+ try test__ctzdi2(0x00000000_00000069, 0);
+ try test__ctzdi2(0x00000000_0000006A, 1);
+ try test__ctzdi2(0x00000000_0000006B, 0);
+ try test__ctzdi2(0x00000000_0000006C, 2);
+ try test__ctzdi2(0x00000000_0000006D, 0);
+ try test__ctzdi2(0x00000000_0000006E, 1);
+ try test__ctzdi2(0x00000000_0000006F, 0);
+ try test__ctzdi2(0x00000000_00000070, 4);
+ try test__ctzdi2(0x00000000_00000071, 0);
+ try test__ctzdi2(0x00000000_00000072, 1);
+ try test__ctzdi2(0x00000000_00000073, 0);
+ try test__ctzdi2(0x00000000_00000074, 2);
+ try test__ctzdi2(0x00000000_00000075, 0);
+ try test__ctzdi2(0x00000000_00000076, 1);
+ try test__ctzdi2(0x00000000_00000077, 0);
+ try test__ctzdi2(0x00000000_00000078, 3);
+ try test__ctzdi2(0x00000000_00000079, 0);
+ try test__ctzdi2(0x00000000_0000007A, 1);
+ try test__ctzdi2(0x00000000_0000007B, 0);
+ try test__ctzdi2(0x00000000_0000007C, 2);
+ try test__ctzdi2(0x00000000_0000007D, 0);
+ try test__ctzdi2(0x00000000_0000007E, 1);
+ try test__ctzdi2(0x00000000_0000007F, 0);
+ try test__ctzdi2(0x00000000_00000080, 7);
+ try test__ctzdi2(0x00000000_00000081, 0);
+ try test__ctzdi2(0x00000000_00000082, 1);
+ try test__ctzdi2(0x00000000_00000083, 0);
+ try test__ctzdi2(0x00000000_00000084, 2);
+ try test__ctzdi2(0x00000000_00000085, 0);
+ try test__ctzdi2(0x00000000_00000086, 1);
+ try test__ctzdi2(0x00000000_00000087, 0);
+ try test__ctzdi2(0x00000000_00000088, 3);
+ try test__ctzdi2(0x00000000_00000089, 0);
+ try test__ctzdi2(0x00000000_0000008A, 1);
+ try test__ctzdi2(0x00000000_0000008B, 0);
+ try test__ctzdi2(0x00000000_0000008C, 2);
+ try test__ctzdi2(0x00000000_0000008D, 0);
+ try test__ctzdi2(0x00000000_0000008E, 1);
+ try test__ctzdi2(0x00000000_0000008F, 0);
+ try test__ctzdi2(0x00000000_00000090, 4);
+ try test__ctzdi2(0x00000000_00000091, 0);
+ try test__ctzdi2(0x00000000_00000092, 1);
+ try test__ctzdi2(0x00000000_00000093, 0);
+ try test__ctzdi2(0x00000000_00000094, 2);
+ try test__ctzdi2(0x00000000_00000095, 0);
+ try test__ctzdi2(0x00000000_00000096, 1);
+ try test__ctzdi2(0x00000000_00000097, 0);
+ try test__ctzdi2(0x00000000_00000098, 3);
+ try test__ctzdi2(0x00000000_00000099, 0);
+ try test__ctzdi2(0x00000000_0000009A, 1);
+ try test__ctzdi2(0x00000000_0000009B, 0);
+ try test__ctzdi2(0x00000000_0000009C, 2);
+ try test__ctzdi2(0x00000000_0000009D, 0);
+ try test__ctzdi2(0x00000000_0000009E, 1);
+ try test__ctzdi2(0x00000000_0000009F, 0);
+ try test__ctzdi2(0x00000000_000000A0, 5);
+ try test__ctzdi2(0x00000000_000000A1, 0);
+ try test__ctzdi2(0x00000000_000000A2, 1);
+ try test__ctzdi2(0x00000000_000000A3, 0);
+ try test__ctzdi2(0x00000000_000000A4, 2);
+ try test__ctzdi2(0x00000000_000000A5, 0);
+ try test__ctzdi2(0x00000000_000000A6, 1);
+ try test__ctzdi2(0x00000000_000000A7, 0);
+ try test__ctzdi2(0x00000000_000000A8, 3);
+ try test__ctzdi2(0x00000000_000000A9, 0);
+ try test__ctzdi2(0x00000000_000000AA, 1);
+ try test__ctzdi2(0x00000000_000000AB, 0);
+ try test__ctzdi2(0x00000000_000000AC, 2);
+ try test__ctzdi2(0x00000000_000000AD, 0);
+ try test__ctzdi2(0x00000000_000000AE, 1);
+ try test__ctzdi2(0x00000000_000000AF, 0);
+ try test__ctzdi2(0x00000000_000000B0, 4);
+ try test__ctzdi2(0x00000000_000000B1, 0);
+ try test__ctzdi2(0x00000000_000000B2, 1);
+ try test__ctzdi2(0x00000000_000000B3, 0);
+ try test__ctzdi2(0x00000000_000000B4, 2);
+ try test__ctzdi2(0x00000000_000000B5, 0);
+ try test__ctzdi2(0x00000000_000000B6, 1);
+ try test__ctzdi2(0x00000000_000000B7, 0);
+ try test__ctzdi2(0x00000000_000000B8, 3);
+ try test__ctzdi2(0x00000000_000000B9, 0);
+ try test__ctzdi2(0x00000000_000000BA, 1);
+ try test__ctzdi2(0x00000000_000000BB, 0);
+ try test__ctzdi2(0x00000000_000000BC, 2);
+ try test__ctzdi2(0x00000000_000000BD, 0);
+ try test__ctzdi2(0x00000000_000000BE, 1);
+ try test__ctzdi2(0x00000000_000000BF, 0);
+ try test__ctzdi2(0x00000000_000000C0, 6);
+ try test__ctzdi2(0x00000000_000000C1, 0);
+ try test__ctzdi2(0x00000000_000000C2, 1);
+ try test__ctzdi2(0x00000000_000000C3, 0);
+ try test__ctzdi2(0x00000000_000000C4, 2);
+ try test__ctzdi2(0x00000000_000000C5, 0);
+ try test__ctzdi2(0x00000000_000000C6, 1);
+ try test__ctzdi2(0x00000000_000000C7, 0);
+ try test__ctzdi2(0x00000000_000000C8, 3);
+ try test__ctzdi2(0x00000000_000000C9, 0);
+ try test__ctzdi2(0x00000000_000000CA, 1);
+ try test__ctzdi2(0x00000000_000000CB, 0);
+ try test__ctzdi2(0x00000000_000000CC, 2);
+ try test__ctzdi2(0x00000000_000000CD, 0);
+ try test__ctzdi2(0x00000000_000000CE, 1);
+ try test__ctzdi2(0x00000000_000000CF, 0);
+ try test__ctzdi2(0x00000000_000000D0, 4);
+ try test__ctzdi2(0x00000000_000000D1, 0);
+ try test__ctzdi2(0x00000000_000000D2, 1);
+ try test__ctzdi2(0x00000000_000000D3, 0);
+ try test__ctzdi2(0x00000000_000000D4, 2);
+ try test__ctzdi2(0x00000000_000000D5, 0);
+ try test__ctzdi2(0x00000000_000000D6, 1);
+ try test__ctzdi2(0x00000000_000000D7, 0);
+ try test__ctzdi2(0x00000000_000000D8, 3);
+ try test__ctzdi2(0x00000000_000000D9, 0);
+ try test__ctzdi2(0x00000000_000000DA, 1);
+ try test__ctzdi2(0x00000000_000000DB, 0);
+ try test__ctzdi2(0x00000000_000000DC, 2);
+ try test__ctzdi2(0x00000000_000000DD, 0);
+ try test__ctzdi2(0x00000000_000000DE, 1);
+ try test__ctzdi2(0x00000000_000000DF, 0);
+ try test__ctzdi2(0x00000000_000000E0, 5);
+ try test__ctzdi2(0x00000000_000000E1, 0);
+ try test__ctzdi2(0x00000000_000000E2, 1);
+ try test__ctzdi2(0x00000000_000000E3, 0);
+ try test__ctzdi2(0x00000000_000000E4, 2);
+ try test__ctzdi2(0x00000000_000000E5, 0);
+ try test__ctzdi2(0x00000000_000000E6, 1);
+ try test__ctzdi2(0x00000000_000000E7, 0);
+ try test__ctzdi2(0x00000000_000000E8, 3);
+ try test__ctzdi2(0x00000000_000000E9, 0);
+ try test__ctzdi2(0x00000000_000000EA, 1);
+ try test__ctzdi2(0x00000000_000000EB, 0);
+ try test__ctzdi2(0x00000000_000000EC, 2);
+ try test__ctzdi2(0x00000000_000000ED, 0);
+ try test__ctzdi2(0x00000000_000000EE, 1);
+ try test__ctzdi2(0x00000000_000000EF, 0);
+ try test__ctzdi2(0x00000000_000000F0, 4);
+ try test__ctzdi2(0x00000000_000000F1, 0);
+ try test__ctzdi2(0x00000000_000000F2, 1);
+ try test__ctzdi2(0x00000000_000000F3, 0);
+ try test__ctzdi2(0x00000000_000000F4, 2);
+ try test__ctzdi2(0x00000000_000000F5, 0);
+ try test__ctzdi2(0x00000000_000000F6, 1);
+ try test__ctzdi2(0x00000000_000000F7, 0);
+ try test__ctzdi2(0x00000000_000000F8, 3);
+ try test__ctzdi2(0x00000000_000000F9, 0);
+ try test__ctzdi2(0x00000000_000000FA, 1);
+ try test__ctzdi2(0x00000000_000000FB, 0);
+ try test__ctzdi2(0x00000000_000000FC, 2);
+ try test__ctzdi2(0x00000000_000000FD, 0);
+ try test__ctzdi2(0x00000000_000000FE, 1);
+ try test__ctzdi2(0x00000000_000000FF, 0);
+
+ try test__ctzdi2(0x00000000_00000000, 64);
+ try test__ctzdi2(0x80000000_00000000, 63);
+ try test__ctzdi2(0x40000000_00000000, 62);
+ try test__ctzdi2(0x20000000_00000000, 61);
+ try test__ctzdi2(0x10000000_00000000, 60);
+ try test__ctzdi2(0x08000000_00000000, 59);
+ try test__ctzdi2(0x04000000_00000000, 58);
+ try test__ctzdi2(0x02000000_00000000, 57);
+ try test__ctzdi2(0x01000000_00000000, 56);
+ try test__ctzdi2(0x00800000_00000000, 55);
+ try test__ctzdi2(0x00400000_00000000, 54);
+ try test__ctzdi2(0x00200000_00000000, 53);
+ try test__ctzdi2(0x00100000_00000000, 52);
+ try test__ctzdi2(0x00080000_00000000, 51);
+ try test__ctzdi2(0x00040000_00000000, 50);
+ try test__ctzdi2(0x00020000_00000000, 49);
+ try test__ctzdi2(0x00010000_00000000, 48);
+ try test__ctzdi2(0x00008000_00000000, 47);
+ try test__ctzdi2(0x00004000_00000000, 46);
+ try test__ctzdi2(0x00002000_00000000, 45);
+ try test__ctzdi2(0x00001000_00000000, 44);
+ try test__ctzdi2(0x00000800_00000000, 43);
+ try test__ctzdi2(0x00000400_00000000, 42);
+ try test__ctzdi2(0x00000200_00000000, 41);
+ try test__ctzdi2(0x00000100_00000000, 40);
+ try test__ctzdi2(0x00000080_00000000, 39);
+ try test__ctzdi2(0x00000040_00000000, 38);
+ try test__ctzdi2(0x00000020_00000000, 37);
+ try test__ctzdi2(0x00000010_00000000, 36);
+ try test__ctzdi2(0x00000008_00000000, 35);
+ try test__ctzdi2(0x00000004_00000000, 34);
+ try test__ctzdi2(0x00000002_00000000, 33);
+ try test__ctzdi2(0x00000001_00000000, 32);
+
+ try test__ctzdi2(0x00000000_80000000, 31);
+ try test__ctzdi2(0x00000000_40000000, 30);
+ try test__ctzdi2(0x00000000_20000000, 29);
+ try test__ctzdi2(0x00000000_10000000, 28);
+ try test__ctzdi2(0x00000000_08000000, 27);
+ try test__ctzdi2(0x00000000_04000000, 26);
+ try test__ctzdi2(0x00000000_02000000, 25);
+ try test__ctzdi2(0x00000000_01000000, 24);
+ try test__ctzdi2(0x00000000_00800000, 23);
+ try test__ctzdi2(0x00000000_00400000, 22);
+ try test__ctzdi2(0x00000000_00200000, 21);
+ try test__ctzdi2(0x00000000_00100000, 20);
+ try test__ctzdi2(0x00000000_00080000, 19);
+ try test__ctzdi2(0x00000000_00040000, 18);
+ try test__ctzdi2(0x00000000_00020000, 17);
+ try test__ctzdi2(0x00000000_00010000, 16);
+ try test__ctzdi2(0x00000000_00008000, 15);
+ try test__ctzdi2(0x00000000_00004000, 14);
+ try test__ctzdi2(0x00000000_00002000, 13);
+ try test__ctzdi2(0x00000000_00001000, 12);
+ try test__ctzdi2(0x00000000_00000800, 11);
+ try test__ctzdi2(0x00000000_00000400, 10);
+ try test__ctzdi2(0x00000000_00000200, 9);
+ try test__ctzdi2(0x00000000_00000100, 8);
+}
lib/std/special/compiler_rt/ctzsi2_test.zig
@@ -0,0 +1,292 @@
+const ctz = @import("count0bits.zig");
+const testing = @import("std").testing;
+
+fn test__ctzsi2(a: u32, expected: i32) !void {
+ var x = @bitCast(i32, a);
+ var result = ctz.__ctzsi2(x);
+ try testing.expectEqual(expected, result);
+}
+
+test "ctzsi2" {
+ try test__ctzsi2(0x00000001, 0);
+ try test__ctzsi2(0x00000002, 1);
+ try test__ctzsi2(0x00000003, 0);
+ try test__ctzsi2(0x00000004, 2);
+ try test__ctzsi2(0x00000005, 0);
+ try test__ctzsi2(0x00000006, 1);
+ try test__ctzsi2(0x00000007, 0);
+ try test__ctzsi2(0x00000008, 3);
+ try test__ctzsi2(0x00000009, 0);
+ try test__ctzsi2(0x0000000A, 1);
+ try test__ctzsi2(0x0000000B, 0);
+ try test__ctzsi2(0x0000000C, 2);
+ try test__ctzsi2(0x0000000D, 0);
+ try test__ctzsi2(0x0000000E, 1);
+ try test__ctzsi2(0x0000000F, 0);
+ try test__ctzsi2(0x00000010, 4);
+ try test__ctzsi2(0x00000011, 0);
+ try test__ctzsi2(0x00000012, 1);
+ try test__ctzsi2(0x00000013, 0);
+ try test__ctzsi2(0x00000014, 2);
+ try test__ctzsi2(0x00000015, 0);
+ try test__ctzsi2(0x00000016, 1);
+ try test__ctzsi2(0x00000017, 0);
+ try test__ctzsi2(0x00000018, 3);
+ try test__ctzsi2(0x00000019, 0);
+ try test__ctzsi2(0x0000001A, 1);
+ try test__ctzsi2(0x0000001B, 0);
+ try test__ctzsi2(0x0000001C, 2);
+ try test__ctzsi2(0x0000001D, 0);
+ try test__ctzsi2(0x0000001E, 1);
+ try test__ctzsi2(0x0000001F, 0);
+ try test__ctzsi2(0x00000020, 5);
+ try test__ctzsi2(0x00000021, 0);
+ try test__ctzsi2(0x00000022, 1);
+ try test__ctzsi2(0x00000023, 0);
+ try test__ctzsi2(0x00000024, 2);
+ try test__ctzsi2(0x00000025, 0);
+ try test__ctzsi2(0x00000026, 1);
+ try test__ctzsi2(0x00000027, 0);
+ try test__ctzsi2(0x00000028, 3);
+ try test__ctzsi2(0x00000029, 0);
+ try test__ctzsi2(0x0000002A, 1);
+ try test__ctzsi2(0x0000002B, 0);
+ try test__ctzsi2(0x0000002C, 2);
+ try test__ctzsi2(0x0000002D, 0);
+ try test__ctzsi2(0x0000002E, 1);
+ try test__ctzsi2(0x0000002F, 0);
+ try test__ctzsi2(0x00000030, 4);
+ try test__ctzsi2(0x00000031, 0);
+ try test__ctzsi2(0x00000032, 1);
+ try test__ctzsi2(0x00000033, 0);
+ try test__ctzsi2(0x00000034, 2);
+ try test__ctzsi2(0x00000035, 0);
+ try test__ctzsi2(0x00000036, 1);
+ try test__ctzsi2(0x00000037, 0);
+ try test__ctzsi2(0x00000038, 3);
+ try test__ctzsi2(0x00000039, 0);
+ try test__ctzsi2(0x0000003A, 1);
+ try test__ctzsi2(0x0000003B, 0);
+ try test__ctzsi2(0x0000003C, 2);
+ try test__ctzsi2(0x0000003D, 0);
+ try test__ctzsi2(0x0000003E, 1);
+ try test__ctzsi2(0x0000003F, 0);
+ try test__ctzsi2(0x00000040, 6);
+ try test__ctzsi2(0x00000041, 0);
+ try test__ctzsi2(0x00000042, 1);
+ try test__ctzsi2(0x00000043, 0);
+ try test__ctzsi2(0x00000044, 2);
+ try test__ctzsi2(0x00000045, 0);
+ try test__ctzsi2(0x00000046, 1);
+ try test__ctzsi2(0x00000047, 0);
+ try test__ctzsi2(0x00000048, 3);
+ try test__ctzsi2(0x00000049, 0);
+ try test__ctzsi2(0x0000004A, 1);
+ try test__ctzsi2(0x0000004B, 0);
+ try test__ctzsi2(0x0000004C, 2);
+ try test__ctzsi2(0x0000004D, 0);
+ try test__ctzsi2(0x0000004E, 1);
+ try test__ctzsi2(0x0000004F, 0);
+ try test__ctzsi2(0x00000050, 4);
+ try test__ctzsi2(0x00000051, 0);
+ try test__ctzsi2(0x00000052, 1);
+ try test__ctzsi2(0x00000053, 0);
+ try test__ctzsi2(0x00000054, 2);
+ try test__ctzsi2(0x00000055, 0);
+ try test__ctzsi2(0x00000056, 1);
+ try test__ctzsi2(0x00000057, 0);
+ try test__ctzsi2(0x00000058, 3);
+ try test__ctzsi2(0x00000059, 0);
+ try test__ctzsi2(0x0000005A, 1);
+ try test__ctzsi2(0x0000005B, 0);
+ try test__ctzsi2(0x0000005C, 2);
+ try test__ctzsi2(0x0000005D, 0);
+ try test__ctzsi2(0x0000005E, 1);
+ try test__ctzsi2(0x0000005F, 0);
+ try test__ctzsi2(0x00000060, 5);
+ try test__ctzsi2(0x00000061, 0);
+ try test__ctzsi2(0x00000062, 1);
+ try test__ctzsi2(0x00000063, 0);
+ try test__ctzsi2(0x00000064, 2);
+ try test__ctzsi2(0x00000065, 0);
+ try test__ctzsi2(0x00000066, 1);
+ try test__ctzsi2(0x00000067, 0);
+ try test__ctzsi2(0x00000068, 3);
+ try test__ctzsi2(0x00000069, 0);
+ try test__ctzsi2(0x0000006A, 1);
+ try test__ctzsi2(0x0000006B, 0);
+ try test__ctzsi2(0x0000006C, 2);
+ try test__ctzsi2(0x0000006D, 0);
+ try test__ctzsi2(0x0000006E, 1);
+ try test__ctzsi2(0x0000006F, 0);
+ try test__ctzsi2(0x00000070, 4);
+ try test__ctzsi2(0x00000071, 0);
+ try test__ctzsi2(0x00000072, 1);
+ try test__ctzsi2(0x00000073, 0);
+ try test__ctzsi2(0x00000074, 2);
+ try test__ctzsi2(0x00000075, 0);
+ try test__ctzsi2(0x00000076, 1);
+ try test__ctzsi2(0x00000077, 0);
+ try test__ctzsi2(0x00000078, 3);
+ try test__ctzsi2(0x00000079, 0);
+ try test__ctzsi2(0x0000007A, 1);
+ try test__ctzsi2(0x0000007B, 0);
+ try test__ctzsi2(0x0000007C, 2);
+ try test__ctzsi2(0x0000007D, 0);
+ try test__ctzsi2(0x0000007E, 1);
+ try test__ctzsi2(0x0000007F, 0);
+ try test__ctzsi2(0x00000080, 7);
+ try test__ctzsi2(0x00000081, 0);
+ try test__ctzsi2(0x00000082, 1);
+ try test__ctzsi2(0x00000083, 0);
+ try test__ctzsi2(0x00000084, 2);
+ try test__ctzsi2(0x00000085, 0);
+ try test__ctzsi2(0x00000086, 1);
+ try test__ctzsi2(0x00000087, 0);
+ try test__ctzsi2(0x00000088, 3);
+ try test__ctzsi2(0x00000089, 0);
+ try test__ctzsi2(0x0000008A, 1);
+ try test__ctzsi2(0x0000008B, 0);
+ try test__ctzsi2(0x0000008C, 2);
+ try test__ctzsi2(0x0000008D, 0);
+ try test__ctzsi2(0x0000008E, 1);
+ try test__ctzsi2(0x0000008F, 0);
+ try test__ctzsi2(0x00000090, 4);
+ try test__ctzsi2(0x00000091, 0);
+ try test__ctzsi2(0x00000092, 1);
+ try test__ctzsi2(0x00000093, 0);
+ try test__ctzsi2(0x00000094, 2);
+ try test__ctzsi2(0x00000095, 0);
+ try test__ctzsi2(0x00000096, 1);
+ try test__ctzsi2(0x00000097, 0);
+ try test__ctzsi2(0x00000098, 3);
+ try test__ctzsi2(0x00000099, 0);
+ try test__ctzsi2(0x0000009A, 1);
+ try test__ctzsi2(0x0000009B, 0);
+ try test__ctzsi2(0x0000009C, 2);
+ try test__ctzsi2(0x0000009D, 0);
+ try test__ctzsi2(0x0000009E, 1);
+ try test__ctzsi2(0x0000009F, 0);
+ try test__ctzsi2(0x000000A0, 5);
+ try test__ctzsi2(0x000000A1, 0);
+ try test__ctzsi2(0x000000A2, 1);
+ try test__ctzsi2(0x000000A3, 0);
+ try test__ctzsi2(0x000000A4, 2);
+ try test__ctzsi2(0x000000A5, 0);
+ try test__ctzsi2(0x000000A6, 1);
+ try test__ctzsi2(0x000000A7, 0);
+ try test__ctzsi2(0x000000A8, 3);
+ try test__ctzsi2(0x000000A9, 0);
+ try test__ctzsi2(0x000000AA, 1);
+ try test__ctzsi2(0x000000AB, 0);
+ try test__ctzsi2(0x000000AC, 2);
+ try test__ctzsi2(0x000000AD, 0);
+ try test__ctzsi2(0x000000AE, 1);
+ try test__ctzsi2(0x000000AF, 0);
+ try test__ctzsi2(0x000000B0, 4);
+ try test__ctzsi2(0x000000B1, 0);
+ try test__ctzsi2(0x000000B2, 1);
+ try test__ctzsi2(0x000000B3, 0);
+ try test__ctzsi2(0x000000B4, 2);
+ try test__ctzsi2(0x000000B5, 0);
+ try test__ctzsi2(0x000000B6, 1);
+ try test__ctzsi2(0x000000B7, 0);
+ try test__ctzsi2(0x000000B8, 3);
+ try test__ctzsi2(0x000000B9, 0);
+ try test__ctzsi2(0x000000BA, 1);
+ try test__ctzsi2(0x000000BB, 0);
+ try test__ctzsi2(0x000000BC, 2);
+ try test__ctzsi2(0x000000BD, 0);
+ try test__ctzsi2(0x000000BE, 1);
+ try test__ctzsi2(0x000000BF, 0);
+ try test__ctzsi2(0x000000C0, 6);
+ try test__ctzsi2(0x000000C1, 0);
+ try test__ctzsi2(0x000000C2, 1);
+ try test__ctzsi2(0x000000C3, 0);
+ try test__ctzsi2(0x000000C4, 2);
+ try test__ctzsi2(0x000000C5, 0);
+ try test__ctzsi2(0x000000C6, 1);
+ try test__ctzsi2(0x000000C7, 0);
+ try test__ctzsi2(0x000000C8, 3);
+ try test__ctzsi2(0x000000C9, 0);
+ try test__ctzsi2(0x000000CA, 1);
+ try test__ctzsi2(0x000000CB, 0);
+ try test__ctzsi2(0x000000CC, 2);
+ try test__ctzsi2(0x000000CD, 0);
+ try test__ctzsi2(0x000000CE, 1);
+ try test__ctzsi2(0x000000CF, 0);
+ try test__ctzsi2(0x000000D0, 4);
+ try test__ctzsi2(0x000000D1, 0);
+ try test__ctzsi2(0x000000D2, 1);
+ try test__ctzsi2(0x000000D3, 0);
+ try test__ctzsi2(0x000000D4, 2);
+ try test__ctzsi2(0x000000D5, 0);
+ try test__ctzsi2(0x000000D6, 1);
+ try test__ctzsi2(0x000000D7, 0);
+ try test__ctzsi2(0x000000D8, 3);
+ try test__ctzsi2(0x000000D9, 0);
+ try test__ctzsi2(0x000000DA, 1);
+ try test__ctzsi2(0x000000DB, 0);
+ try test__ctzsi2(0x000000DC, 2);
+ try test__ctzsi2(0x000000DD, 0);
+ try test__ctzsi2(0x000000DE, 1);
+ try test__ctzsi2(0x000000DF, 0);
+ try test__ctzsi2(0x000000E0, 5);
+ try test__ctzsi2(0x000000E1, 0);
+ try test__ctzsi2(0x000000E2, 1);
+ try test__ctzsi2(0x000000E3, 0);
+ try test__ctzsi2(0x000000E4, 2);
+ try test__ctzsi2(0x000000E5, 0);
+ try test__ctzsi2(0x000000E6, 1);
+ try test__ctzsi2(0x000000E7, 0);
+ try test__ctzsi2(0x000000E8, 3);
+ try test__ctzsi2(0x000000E9, 0);
+ try test__ctzsi2(0x000000EA, 1);
+ try test__ctzsi2(0x000000EB, 0);
+ try test__ctzsi2(0x000000EC, 2);
+ try test__ctzsi2(0x000000ED, 0);
+ try test__ctzsi2(0x000000EE, 1);
+ try test__ctzsi2(0x000000EF, 0);
+ try test__ctzsi2(0x000000F0, 4);
+ try test__ctzsi2(0x000000F1, 0);
+ try test__ctzsi2(0x000000F2, 1);
+ try test__ctzsi2(0x000000F3, 0);
+ try test__ctzsi2(0x000000F4, 2);
+ try test__ctzsi2(0x000000F5, 0);
+ try test__ctzsi2(0x000000F6, 1);
+ try test__ctzsi2(0x000000F7, 0);
+ try test__ctzsi2(0x000000F8, 3);
+ try test__ctzsi2(0x000000F9, 0);
+ try test__ctzsi2(0x000000FA, 1);
+ try test__ctzsi2(0x000000FB, 0);
+ try test__ctzsi2(0x000000FC, 2);
+ try test__ctzsi2(0x000000FD, 0);
+ try test__ctzsi2(0x000000FE, 1);
+ try test__ctzsi2(0x000000FF, 0);
+
+ try test__ctzsi2(0x00000000, 32);
+ try test__ctzsi2(0x80000000, 31);
+ try test__ctzsi2(0x40000000, 30);
+ try test__ctzsi2(0x20000000, 29);
+ try test__ctzsi2(0x10000000, 28);
+ try test__ctzsi2(0x08000000, 27);
+ try test__ctzsi2(0x04000000, 26);
+ try test__ctzsi2(0x02000000, 25);
+ try test__ctzsi2(0x01000000, 24);
+ try test__ctzsi2(0x00800000, 23);
+ try test__ctzsi2(0x00400000, 22);
+ try test__ctzsi2(0x00200000, 21);
+ try test__ctzsi2(0x00100000, 20);
+ try test__ctzsi2(0x00080000, 19);
+ try test__ctzsi2(0x00040000, 18);
+ try test__ctzsi2(0x00020000, 17);
+ try test__ctzsi2(0x00010000, 16);
+ try test__ctzsi2(0x00008000, 15);
+ try test__ctzsi2(0x00004000, 14);
+ try test__ctzsi2(0x00002000, 13);
+ try test__ctzsi2(0x00001000, 12);
+ try test__ctzsi2(0x00000800, 11);
+ try test__ctzsi2(0x00000400, 10);
+ try test__ctzsi2(0x00000200, 9);
+ try test__ctzsi2(0x00000100, 8);
+}
lib/std/special/compiler_rt/ctzti2_test.zig
@@ -0,0 +1,391 @@
+const ctz = @import("count0bits.zig");
+const testing = @import("std").testing;
+
+fn test__ctzti2(a: u128, expected: i32) !void {
+ var x = @bitCast(i128, a);
+ var result = ctz.__ctzti2(x);
+ try testing.expectEqual(expected, result);
+}
+
+test "ctzti2" {
+ try test__ctzti2(0x00000000_00000000_00000000_00000001, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000002, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000003, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000004, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_00000005, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000006, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000007, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000008, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_00000009, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000000A, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000000B, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000000C, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_0000000D, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000000E, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000000F, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000010, 4);
+ try test__ctzti2(0x00000000_00000000_00000000_00000011, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000012, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000013, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000014, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_00000015, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000016, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000017, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000018, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_00000019, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000001A, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000001B, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000001C, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_0000001D, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000001E, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000001F, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000020, 5);
+ try test__ctzti2(0x00000000_00000000_00000000_00000021, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000022, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000023, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000024, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_00000025, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000026, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000027, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000028, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_00000029, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000002A, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000002B, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000002C, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_0000002D, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000002E, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000002F, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000030, 4);
+ try test__ctzti2(0x00000000_00000000_00000000_00000031, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000032, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000033, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000034, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_00000035, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000036, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000037, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000038, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_00000039, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000003A, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000003B, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000003C, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_0000003D, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000003E, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000003F, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000040, 6);
+ try test__ctzti2(0x00000000_00000000_00000000_00000041, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000042, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000043, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000044, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_00000045, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000046, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000047, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000048, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_00000049, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000004A, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000004B, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000004C, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_0000004D, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000004E, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000004F, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000050, 4);
+ try test__ctzti2(0x00000000_00000000_00000000_00000051, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000052, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000053, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000054, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_00000055, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000056, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000057, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000058, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_00000059, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000005A, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000005B, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000005C, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_0000005D, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000005E, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000005F, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000060, 5);
+ try test__ctzti2(0x00000000_00000000_00000000_00000061, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000062, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000063, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000064, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_00000065, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000066, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000067, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000068, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_00000069, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000006A, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000006B, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000006C, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_0000006D, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000006E, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000006F, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000070, 4);
+ try test__ctzti2(0x00000000_00000000_00000000_00000071, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000072, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000073, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000074, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_00000075, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000076, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000077, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000078, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_00000079, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000007A, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000007B, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000007C, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_0000007D, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000007E, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000007F, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000080, 7);
+ try test__ctzti2(0x00000000_00000000_00000000_00000081, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000082, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000083, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000084, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_00000085, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000086, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000087, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000088, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_00000089, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000008A, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000008B, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000008C, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_0000008D, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000008E, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000008F, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000090, 4);
+ try test__ctzti2(0x00000000_00000000_00000000_00000091, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000092, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000093, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000094, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_00000095, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000096, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_00000097, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_00000098, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_00000099, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000009A, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000009B, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000009C, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_0000009D, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_0000009E, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_0000009F, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000A0, 5);
+ try test__ctzti2(0x00000000_00000000_00000000_000000A1, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000A2, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000A3, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000A4, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_000000A5, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000A6, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000A7, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000A8, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_000000A9, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000AA, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000AB, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000AC, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_000000AD, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000AE, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000AF, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000B0, 4);
+ try test__ctzti2(0x00000000_00000000_00000000_000000B1, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000B2, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000B3, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000B4, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_000000B5, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000B6, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000B7, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000B8, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_000000B9, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000BA, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000BB, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000BC, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_000000BD, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000BE, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000BF, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000C0, 6);
+ try test__ctzti2(0x00000000_00000000_00000000_000000C1, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000C2, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000C3, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000C4, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_000000C5, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000C6, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000C7, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000C8, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_000000C9, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000CA, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000CB, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000CC, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_000000CD, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000CE, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000CF, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000D0, 4);
+ try test__ctzti2(0x00000000_00000000_00000000_000000D1, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000D2, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000D3, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000D4, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_000000D5, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000D6, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000D7, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000D8, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_000000D9, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000DA, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000DB, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000DC, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_000000DD, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000DE, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000DF, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000E0, 5);
+ try test__ctzti2(0x00000000_00000000_00000000_000000E1, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000E2, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000E3, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000E4, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_000000E5, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000E6, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000E7, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000E8, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_000000E9, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000EA, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000EB, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000EC, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_000000ED, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000EE, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000EF, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000F0, 4);
+ try test__ctzti2(0x00000000_00000000_00000000_000000F1, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000F2, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000F3, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000F4, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_000000F5, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000F6, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000F7, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000F8, 3);
+ try test__ctzti2(0x00000000_00000000_00000000_000000F9, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000FA, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000FB, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000FC, 2);
+ try test__ctzti2(0x00000000_00000000_00000000_000000FD, 0);
+ try test__ctzti2(0x00000000_00000000_00000000_000000FE, 1);
+ try test__ctzti2(0x00000000_00000000_00000000_000000FF, 0);
+
+ try test__ctzti2(0x00000000_00000000_00000000_00000000, 128);
+ try test__ctzti2(0x80000000_00000000_00000000_00000000, 127);
+ try test__ctzti2(0x40000000_00000000_00000000_00000000, 126);
+ try test__ctzti2(0x20000000_00000000_00000000_00000000, 125);
+ try test__ctzti2(0x10000000_00000000_00000000_00000000, 124);
+ try test__ctzti2(0x08000000_00000000_00000000_00000000, 123);
+ try test__ctzti2(0x04000000_00000000_00000000_00000000, 122);
+ try test__ctzti2(0x02000000_00000000_00000000_00000000, 121);
+ try test__ctzti2(0x01000000_00000000_00000000_00000000, 120);
+ try test__ctzti2(0x00800000_00000000_00000000_00000000, 119);
+ try test__ctzti2(0x00400000_00000000_00000000_00000000, 118);
+ try test__ctzti2(0x00200000_00000000_00000000_00000000, 117);
+ try test__ctzti2(0x00100000_00000000_00000000_00000000, 116);
+ try test__ctzti2(0x00080000_00000000_00000000_00000000, 115);
+ try test__ctzti2(0x00040000_00000000_00000000_00000000, 114);
+ try test__ctzti2(0x00020000_00000000_00000000_00000000, 113);
+ try test__ctzti2(0x00010000_00000000_00000000_00000000, 112);
+ try test__ctzti2(0x00008000_00000000_00000000_00000000, 111);
+ try test__ctzti2(0x00004000_00000000_00000000_00000000, 110);
+ try test__ctzti2(0x00002000_00000000_00000000_00000000, 109);
+ try test__ctzti2(0x00001000_00000000_00000000_00000000, 108);
+ try test__ctzti2(0x00000800_00000000_00000000_00000000, 107);
+ try test__ctzti2(0x00000400_00000000_00000000_00000000, 106);
+ try test__ctzti2(0x00000200_00000000_00000000_00000000, 105);
+ try test__ctzti2(0x00000100_00000000_00000000_00000000, 104);
+ try test__ctzti2(0x00000080_00000000_00000000_00000000, 103);
+ try test__ctzti2(0x00000040_00000000_00000000_00000000, 102);
+ try test__ctzti2(0x00000020_00000000_00000000_00000000, 101);
+ try test__ctzti2(0x00000010_00000000_00000000_00000000, 100);
+ try test__ctzti2(0x00000008_00000000_00000000_00000000, 99);
+ try test__ctzti2(0x00000004_00000000_00000000_00000000, 98);
+ try test__ctzti2(0x00000002_00000000_00000000_00000000, 97);
+ try test__ctzti2(0x00000001_00000000_00000000_00000000, 96);
+
+ try test__ctzti2(0x00000000_80000000_00000000_00000000, 95);
+ try test__ctzti2(0x00000000_40000000_00000000_00000000, 94);
+ try test__ctzti2(0x00000000_20000000_00000000_00000000, 93);
+ try test__ctzti2(0x00000000_10000000_00000000_00000000, 92);
+ try test__ctzti2(0x00000000_08000000_00000000_00000000, 91);
+ try test__ctzti2(0x00000000_04000000_00000000_00000000, 90);
+ try test__ctzti2(0x00000000_02000000_00000000_00000000, 89);
+ try test__ctzti2(0x00000000_01000000_00000000_00000000, 88);
+ try test__ctzti2(0x00000000_00800000_00000000_00000000, 87);
+ try test__ctzti2(0x00000000_00400000_00000000_00000000, 86);
+ try test__ctzti2(0x00000000_00200000_00000000_00000000, 85);
+ try test__ctzti2(0x00000000_00100000_00000000_00000000, 84);
+ try test__ctzti2(0x00000000_00080000_00000000_00000000, 83);
+ try test__ctzti2(0x00000000_00040000_00000000_00000000, 82);
+ try test__ctzti2(0x00000000_00020000_00000000_00000000, 81);
+ try test__ctzti2(0x00000000_00010000_00000000_00000000, 80);
+ try test__ctzti2(0x00000000_00008000_00000000_00000000, 79);
+ try test__ctzti2(0x00000000_00004000_00000000_00000000, 78);
+ try test__ctzti2(0x00000000_00002000_00000000_00000000, 77);
+ try test__ctzti2(0x00000000_00001000_00000000_00000000, 76);
+ try test__ctzti2(0x00000000_00000800_00000000_00000000, 75);
+ try test__ctzti2(0x00000000_00000400_00000000_00000000, 74);
+ try test__ctzti2(0x00000000_00000200_00000000_00000000, 73);
+ try test__ctzti2(0x00000000_00000100_00000000_00000000, 72);
+ try test__ctzti2(0x00000000_00000080_00000000_00000000, 71);
+ try test__ctzti2(0x00000000_00000040_00000000_00000000, 70);
+ try test__ctzti2(0x00000000_00000020_00000000_00000000, 69);
+ try test__ctzti2(0x00000000_00000010_00000000_00000000, 68);
+ try test__ctzti2(0x00000000_00000008_00000000_00000000, 67);
+ try test__ctzti2(0x00000000_00000004_00000000_00000000, 66);
+ try test__ctzti2(0x00000000_00000002_00000000_00000000, 65);
+ try test__ctzti2(0x00000000_00000001_00000000_00000000, 64);
+
+ try test__ctzti2(0x00000000_00000000_80000000_00000000, 63);
+ try test__ctzti2(0x00000000_00000000_40000000_00000000, 62);
+ try test__ctzti2(0x00000000_00000000_20000000_00000000, 61);
+ try test__ctzti2(0x00000000_00000000_10000000_00000000, 60);
+ try test__ctzti2(0x00000000_00000000_08000000_00000000, 59);
+ try test__ctzti2(0x00000000_00000000_04000000_00000000, 58);
+ try test__ctzti2(0x00000000_00000000_02000000_00000000, 57);
+ try test__ctzti2(0x00000000_00000000_01000000_00000000, 56);
+ try test__ctzti2(0x00000000_00000000_00800000_00000000, 55);
+ try test__ctzti2(0x00000000_00000000_00400000_00000000, 54);
+ try test__ctzti2(0x00000000_00000000_00200000_00000000, 53);
+ try test__ctzti2(0x00000000_00000000_00100000_00000000, 52);
+ try test__ctzti2(0x00000000_00000000_00080000_00000000, 51);
+ try test__ctzti2(0x00000000_00000000_00040000_00000000, 50);
+ try test__ctzti2(0x00000000_00000000_00020000_00000000, 49);
+ try test__ctzti2(0x00000000_00000000_00010000_00000000, 48);
+ try test__ctzti2(0x00000000_00000000_00008000_00000000, 47);
+ try test__ctzti2(0x00000000_00000000_00004000_00000000, 46);
+ try test__ctzti2(0x00000000_00000000_00002000_00000000, 45);
+ try test__ctzti2(0x00000000_00000000_00001000_00000000, 44);
+ try test__ctzti2(0x00000000_00000000_00000800_00000000, 43);
+ try test__ctzti2(0x00000000_00000000_00000400_00000000, 42);
+ try test__ctzti2(0x00000000_00000000_00000200_00000000, 41);
+ try test__ctzti2(0x00000000_00000000_00000100_00000000, 40);
+ try test__ctzti2(0x00000000_00000000_00000080_00000000, 39);
+ try test__ctzti2(0x00000000_00000000_00000040_00000000, 38);
+ try test__ctzti2(0x00000000_00000000_00000020_00000000, 37);
+ try test__ctzti2(0x00000000_00000000_00000010_00000000, 36);
+ try test__ctzti2(0x00000000_00000000_00000008_00000000, 35);
+ try test__ctzti2(0x00000000_00000000_00000004_00000000, 34);
+ try test__ctzti2(0x00000000_00000000_00000002_00000000, 33);
+ try test__ctzti2(0x00000000_00000000_00000001_00000000, 32);
+
+ try test__ctzti2(0x00000000_00000000_00000000_80000000, 31);
+ try test__ctzti2(0x00000000_00000000_00000000_40000000, 30);
+ try test__ctzti2(0x00000000_00000000_00000000_20000000, 29);
+ try test__ctzti2(0x00000000_00000000_00000000_10000000, 28);
+ try test__ctzti2(0x00000000_00000000_00000000_08000000, 27);
+ try test__ctzti2(0x00000000_00000000_00000000_04000000, 26);
+ try test__ctzti2(0x00000000_00000000_00000000_02000000, 25);
+ try test__ctzti2(0x00000000_00000000_00000000_01000000, 24);
+ try test__ctzti2(0x00000000_00000000_00000000_00800000, 23);
+ try test__ctzti2(0x00000000_00000000_00000000_00400000, 22);
+ try test__ctzti2(0x00000000_00000000_00000000_00200000, 21);
+ try test__ctzti2(0x00000000_00000000_00000000_00100000, 20);
+ try test__ctzti2(0x00000000_00000000_00000000_00080000, 19);
+ try test__ctzti2(0x00000000_00000000_00000000_00040000, 18);
+ try test__ctzti2(0x00000000_00000000_00000000_00020000, 17);
+ try test__ctzti2(0x00000000_00000000_00000000_00010000, 16);
+ try test__ctzti2(0x00000000_00000000_00000000_00008000, 15);
+ try test__ctzti2(0x00000000_00000000_00000000_00004000, 14);
+ try test__ctzti2(0x00000000_00000000_00000000_00002000, 13);
+ try test__ctzti2(0x00000000_00000000_00000000_00001000, 12);
+ try test__ctzti2(0x00000000_00000000_00000000_00000800, 11);
+ try test__ctzti2(0x00000000_00000000_00000000_00000400, 10);
+ try test__ctzti2(0x00000000_00000000_00000000_00000200, 9);
+ try test__ctzti2(0x00000000_00000000_00000000_00000100, 8);
+}
lib/std/special/compiler_rt.zig
@@ -383,6 +383,12 @@ comptime {
@export(__clzdi2, .{ .name = "__clzdi2", .linkage = linkage });
const __clzti2 = @import("compiler_rt/count0bits.zig").__clzti2;
@export(__clzti2, .{ .name = "__clzti2", .linkage = linkage });
+ const __ctzsi2 = @import("compiler_rt/count0bits.zig").__ctzsi2;
+ @export(__ctzsi2, .{ .name = "__ctzsi2", .linkage = linkage });
+ const __ctzdi2 = @import("compiler_rt/count0bits.zig").__ctzdi2;
+ @export(__ctzdi2, .{ .name = "__ctzdi2", .linkage = linkage });
+ const __ctzti2 = @import("compiler_rt/count0bits.zig").__ctzti2;
+ @export(__ctzti2, .{ .name = "__ctzti2", .linkage = linkage });
if (builtin.link_libc and os_tag == .openbsd) {
const __emutls_get_address = @import("compiler_rt/emutls.zig").__emutls_get_address;