Zig 0.17.0-dev (Split by item)

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__clzsi2

count0bits.__clzsi2

pub const __clzsi2 = switch (builtin.cpu.arch)

File

lib/compiler_rt/count0bits.zig:139

Code

pub const __clzsi2 = switch (builtin.cpu.arch) {
    .arm, .armeb, .thumb, .thumbeb => impl: {
        const use_thumb1 =
            (builtin.cpu.arch.isThumb() or builtin.cpu.has(.arm, .noarm)) and !builtin.cpu.has(.arm, .thumb2);

        if (use_thumb1) {
            break :impl __clzsi2_thumb1;
        }
        // From here on we're either targeting Thumb2 or ARM.
        else if (!builtin.cpu.arch.isThumb()) {
            break :impl __clzsi2_arm32;
        }
        // Use the generic implementation otherwise.
        else break :impl clzsi2_generic;
    },
    else => clzsi2_generic,
}