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zig/lib/compiler_rt/clzsi2_test.zig
Alex Rønne Petersen c9e67e71c1
std.Target: Replace isARM() with isArmOrThumb() and rename it to isArm(). 
The old isARM() function was a portability trap. With the name it had, it seemed
like the obviously correct function to use, but it didn't include Thumb. In the
vast majority of cases where someone wants to ask "is the target Arm?", Thumb
*should* be included.

There are exactly 3 cases in the codebase where we do actually need to exclude
Thumb, although one of those is in Aro and mirrors a check in Clang that is
itself likely a bug. These rare cases can just add an extra isThumb() check.
2024-11-03 09:29:30 +01:00

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const builtin = @import("builtin");
const clz = @import("count0bits.zig");
const testing = @import("std").testing;
fn test__clzsi2(a: u32, expected: i32) !void {
const nakedClzsi2 = clz.__clzsi2;
const actualClzsi2 = @as(*const fn (a: i32) callconv(.C) i32, @ptrCast(&nakedClzsi2));
const x: i32 = @bitCast(a);
const result = actualClzsi2(x);
try testing.expectEqual(expected, result);
}
test "clzsi2" {
try test__clzsi2(0x00800000, 8);
try test__clzsi2(0x01000000, 7);
try test__clzsi2(0x02000000, 6);
try test__clzsi2(0x03000000, 6);
try test__clzsi2(0x04000000, 5);
try test__clzsi2(0x05000000, 5);
try test__clzsi2(0x06000000, 5);
try test__clzsi2(0x07000000, 5);
try test__clzsi2(0x08000000, 4);
try test__clzsi2(0x09000000, 4);
try test__clzsi2(0x0A000000, 4);
try test__clzsi2(0x0B000000, 4);
try test__clzsi2(0x0C000000, 4);
try test__clzsi2(0x0D000000, 4);
try test__clzsi2(0x0E000000, 4);
try test__clzsi2(0x0F000000, 4);
try test__clzsi2(0x10000000, 3);
try test__clzsi2(0x11000000, 3);
try test__clzsi2(0x12000000, 3);
try test__clzsi2(0x13000000, 3);
try test__clzsi2(0x14000000, 3);
try test__clzsi2(0x15000000, 3);
try test__clzsi2(0x16000000, 3);
try test__clzsi2(0x17000000, 3);
try test__clzsi2(0x18000000, 3);
try test__clzsi2(0x19000000, 3);
try test__clzsi2(0x1A000000, 3);
try test__clzsi2(0x1B000000, 3);
try test__clzsi2(0x1C000000, 3);
try test__clzsi2(0x1D000000, 3);
try test__clzsi2(0x1E000000, 3);
try test__clzsi2(0x1F000000, 3);
try test__clzsi2(0x20000000, 2);
try test__clzsi2(0x21000000, 2);
try test__clzsi2(0x22000000, 2);
try test__clzsi2(0x23000000, 2);
try test__clzsi2(0x24000000, 2);
try test__clzsi2(0x25000000, 2);
try test__clzsi2(0x26000000, 2);
try test__clzsi2(0x27000000, 2);
try test__clzsi2(0x28000000, 2);
try test__clzsi2(0x29000000, 2);
try test__clzsi2(0x2A000000, 2);
try test__clzsi2(0x2B000000, 2);
try test__clzsi2(0x2C000000, 2);
try test__clzsi2(0x2D000000, 2);
try test__clzsi2(0x2E000000, 2);
try test__clzsi2(0x2F000000, 2);
try test__clzsi2(0x30000000, 2);
try test__clzsi2(0x31000000, 2);
try test__clzsi2(0x32000000, 2);
try test__clzsi2(0x33000000, 2);
try test__clzsi2(0x34000000, 2);
try test__clzsi2(0x35000000, 2);
try test__clzsi2(0x36000000, 2);
try test__clzsi2(0x37000000, 2);
try test__clzsi2(0x38000000, 2);
try test__clzsi2(0x39000000, 2);
try test__clzsi2(0x3A000000, 2);
try test__clzsi2(0x3B000000, 2);
try test__clzsi2(0x3C000000, 2);
try test__clzsi2(0x3D000000, 2);
try test__clzsi2(0x3E000000, 2);
try test__clzsi2(0x3F000000, 2);
try test__clzsi2(0x40000000, 1);
try test__clzsi2(0x41000000, 1);
try test__clzsi2(0x42000000, 1);
try test__clzsi2(0x43000000, 1);
try test__clzsi2(0x44000000, 1);
try test__clzsi2(0x45000000, 1);
try test__clzsi2(0x46000000, 1);
try test__clzsi2(0x47000000, 1);
try test__clzsi2(0x48000000, 1);
try test__clzsi2(0x49000000, 1);
try test__clzsi2(0x4A000000, 1);
try test__clzsi2(0x4B000000, 1);
try test__clzsi2(0x4C000000, 1);
try test__clzsi2(0x4D000000, 1);
try test__clzsi2(0x4E000000, 1);
try test__clzsi2(0x4F000000, 1);
try test__clzsi2(0x50000000, 1);
try test__clzsi2(0x51000000, 1);
try test__clzsi2(0x52000000, 1);
try test__clzsi2(0x53000000, 1);
try test__clzsi2(0x54000000, 1);
try test__clzsi2(0x55000000, 1);
try test__clzsi2(0x56000000, 1);
try test__clzsi2(0x57000000, 1);
try test__clzsi2(0x58000000, 1);
try test__clzsi2(0x59000000, 1);
try test__clzsi2(0x5A000000, 1);
try test__clzsi2(0x5B000000, 1);
try test__clzsi2(0x5C000000, 1);
try test__clzsi2(0x5D000000, 1);
try test__clzsi2(0x5E000000, 1);
try test__clzsi2(0x5F000000, 1);
try test__clzsi2(0x60000000, 1);
try test__clzsi2(0x61000000, 1);
try test__clzsi2(0x62000000, 1);
try test__clzsi2(0x63000000, 1);
try test__clzsi2(0x64000000, 1);
try test__clzsi2(0x65000000, 1);
try test__clzsi2(0x66000000, 1);
try test__clzsi2(0x67000000, 1);
try test__clzsi2(0x68000000, 1);
try test__clzsi2(0x69000000, 1);
try test__clzsi2(0x6A000000, 1);
try test__clzsi2(0x6B000000, 1);
try test__clzsi2(0x6C000000, 1);
try test__clzsi2(0x6D000000, 1);
try test__clzsi2(0x6E000000, 1);
try test__clzsi2(0x6F000000, 1);
try test__clzsi2(0x70000000, 1);
try test__clzsi2(0x71000000, 1);
try test__clzsi2(0x72000000, 1);
try test__clzsi2(0x73000000, 1);
try test__clzsi2(0x74000000, 1);
try test__clzsi2(0x75000000, 1);
try test__clzsi2(0x76000000, 1);
try test__clzsi2(0x77000000, 1);
try test__clzsi2(0x78000000, 1);
try test__clzsi2(0x79000000, 1);
try test__clzsi2(0x7A000000, 1);
try test__clzsi2(0x7B000000, 1);
try test__clzsi2(0x7C000000, 1);
try test__clzsi2(0x7D000000, 1);
try test__clzsi2(0x7E000000, 1);
try test__clzsi2(0x7F000000, 1);
try test__clzsi2(0x80000000, 0);
try test__clzsi2(0x81000000, 0);
try test__clzsi2(0x82000000, 0);
try test__clzsi2(0x83000000, 0);
try test__clzsi2(0x84000000, 0);
try test__clzsi2(0x85000000, 0);
try test__clzsi2(0x86000000, 0);
try test__clzsi2(0x87000000, 0);
try test__clzsi2(0x88000000, 0);
try test__clzsi2(0x89000000, 0);
try test__clzsi2(0x8A000000, 0);
try test__clzsi2(0x8B000000, 0);
try test__clzsi2(0x8C000000, 0);
try test__clzsi2(0x8D000000, 0);
try test__clzsi2(0x8E000000, 0);
try test__clzsi2(0x8F000000, 0);
try test__clzsi2(0x90000000, 0);
try test__clzsi2(0x91000000, 0);
try test__clzsi2(0x92000000, 0);
try test__clzsi2(0x93000000, 0);
try test__clzsi2(0x94000000, 0);
try test__clzsi2(0x95000000, 0);
try test__clzsi2(0x96000000, 0);
try test__clzsi2(0x97000000, 0);
try test__clzsi2(0x98000000, 0);
try test__clzsi2(0x99000000, 0);
try test__clzsi2(0x9A000000, 0);
try test__clzsi2(0x9B000000, 0);
try test__clzsi2(0x9C000000, 0);
try test__clzsi2(0x9D000000, 0);
try test__clzsi2(0x9E000000, 0);
try test__clzsi2(0x9F000000, 0);
try test__clzsi2(0xA0000000, 0);
try test__clzsi2(0xA1000000, 0);
try test__clzsi2(0xA2000000, 0);
try test__clzsi2(0xA3000000, 0);
try test__clzsi2(0xA4000000, 0);
try test__clzsi2(0xA5000000, 0);
try test__clzsi2(0xA6000000, 0);
try test__clzsi2(0xA7000000, 0);
try test__clzsi2(0xA8000000, 0);
try test__clzsi2(0xA9000000, 0);
try test__clzsi2(0xAA000000, 0);
try test__clzsi2(0xAB000000, 0);
try test__clzsi2(0xAC000000, 0);
try test__clzsi2(0xAD000000, 0);
try test__clzsi2(0xAE000000, 0);
try test__clzsi2(0xAF000000, 0);
try test__clzsi2(0xB0000000, 0);
try test__clzsi2(0xB1000000, 0);
try test__clzsi2(0xB2000000, 0);
try test__clzsi2(0xB3000000, 0);
try test__clzsi2(0xB4000000, 0);
try test__clzsi2(0xB5000000, 0);
try test__clzsi2(0xB6000000, 0);
try test__clzsi2(0xB7000000, 0);
try test__clzsi2(0xB8000000, 0);
try test__clzsi2(0xB9000000, 0);
try test__clzsi2(0xBA000000, 0);
try test__clzsi2(0xBB000000, 0);
try test__clzsi2(0xBC000000, 0);
try test__clzsi2(0xBD000000, 0);
try test__clzsi2(0xBE000000, 0);
try test__clzsi2(0xBF000000, 0);
try test__clzsi2(0xC0000000, 0);
try test__clzsi2(0xC1000000, 0);
try test__clzsi2(0xC2000000, 0);
try test__clzsi2(0xC3000000, 0);
try test__clzsi2(0xC4000000, 0);
try test__clzsi2(0xC5000000, 0);
try test__clzsi2(0xC6000000, 0);
try test__clzsi2(0xC7000000, 0);
try test__clzsi2(0xC8000000, 0);
try test__clzsi2(0xC9000000, 0);
try test__clzsi2(0xCA000000, 0);
try test__clzsi2(0xCB000000, 0);
try test__clzsi2(0xCC000000, 0);
try test__clzsi2(0xCD000000, 0);
try test__clzsi2(0xCE000000, 0);
try test__clzsi2(0xCF000000, 0);
try test__clzsi2(0xD0000000, 0);
try test__clzsi2(0xD1000000, 0);
try test__clzsi2(0xD2000000, 0);
try test__clzsi2(0xD3000000, 0);
try test__clzsi2(0xD4000000, 0);
try test__clzsi2(0xD5000000, 0);
try test__clzsi2(0xD6000000, 0);
try test__clzsi2(0xD7000000, 0);
try test__clzsi2(0xD8000000, 0);
try test__clzsi2(0xD9000000, 0);
try test__clzsi2(0xDA000000, 0);
try test__clzsi2(0xDB000000, 0);
try test__clzsi2(0xDC000000, 0);
try test__clzsi2(0xDD000000, 0);
try test__clzsi2(0xDE000000, 0);
try test__clzsi2(0xDF000000, 0);
try test__clzsi2(0xE0000000, 0);
try test__clzsi2(0xE1000000, 0);
try test__clzsi2(0xE2000000, 0);
try test__clzsi2(0xE3000000, 0);
try test__clzsi2(0xE4000000, 0);
try test__clzsi2(0xE5000000, 0);
try test__clzsi2(0xE6000000, 0);
try test__clzsi2(0xE7000000, 0);
try test__clzsi2(0xE8000000, 0);
try test__clzsi2(0xE9000000, 0);
try test__clzsi2(0xEA000000, 0);
try test__clzsi2(0xEB000000, 0);
try test__clzsi2(0xEC000000, 0);
try test__clzsi2(0xED000000, 0);
try test__clzsi2(0xEE000000, 0);
try test__clzsi2(0xEF000000, 0);
try test__clzsi2(0xF0000000, 0);
try test__clzsi2(0xF1000000, 0);
try test__clzsi2(0xF2000000, 0);
try test__clzsi2(0xF3000000, 0);
try test__clzsi2(0xF4000000, 0);
try test__clzsi2(0xF5000000, 0);
try test__clzsi2(0xF6000000, 0);
try test__clzsi2(0xF7000000, 0);
try test__clzsi2(0xF8000000, 0);
try test__clzsi2(0xF9000000, 0);
try test__clzsi2(0xFA000000, 0);
try test__clzsi2(0xFB000000, 0);
try test__clzsi2(0xFC000000, 0);
try test__clzsi2(0xFD000000, 0);
try test__clzsi2(0xFE000000, 0);
try test__clzsi2(0xFF000000, 0);
// arm and thumb1 assume input a != 0
if (!builtin.cpu.arch.isArm())
try test__clzsi2(0x00000000, 32);
try test__clzsi2(0x00000001, 31);
try test__clzsi2(0x00000002, 30);
try test__clzsi2(0x00000004, 29);
try test__clzsi2(0x00000008, 28);
try test__clzsi2(0x00000010, 27);
try test__clzsi2(0x00000020, 26);
try test__clzsi2(0x00000040, 25);
try test__clzsi2(0x00000080, 24);
try test__clzsi2(0x00000100, 23);
try test__clzsi2(0x00000200, 22);
try test__clzsi2(0x00000400, 21);
try test__clzsi2(0x00000800, 20);
try test__clzsi2(0x00001000, 19);
try test__clzsi2(0x00002000, 18);
try test__clzsi2(0x00004000, 17);
try test__clzsi2(0x00008000, 16);
try test__clzsi2(0x00010000, 15);
try test__clzsi2(0x00020000, 14);
try test__clzsi2(0x00040000, 13);
try test__clzsi2(0x00080000, 12);
try test__clzsi2(0x00100000, 11);
try test__clzsi2(0x00200000, 10);
try test__clzsi2(0x00400000, 9);
}
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