diff --git a/src/codegen.zig b/src/codegen.zig index c2082fdb4a..a345fd8058 100644 --- a/src/codegen.zig +++ b/src/codegen.zig @@ -1745,7 +1745,7 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type { const result = self.args[arg_index]; const mcv = switch (arch) { - // TODO support stack-only registers on all target architectures + // TODO support stack-only arguments on all target architectures .arm, .armeb, .aarch64, .aarch64_32, .aarch64_be => switch (result) { // Copy registers to the stack .register => |reg| blk: { diff --git a/test/stage2/arm.zig b/test/stage2/arm.zig index 31bbfc3170..f4efbd9b2a 100644 --- a/test/stage2/arm.zig +++ b/test/stage2/arm.zig @@ -419,4 +419,43 @@ pub fn addCases(ctx: *TestContext) !void { "", ); } + + { + var case = ctx.exe("recursive fibonacci", linux_arm); + case.addCompareOutput( + \\export fn _start() noreturn { + \\ assert(fib(0) == 0); + \\ assert(fib(1) == 1); + \\ assert(fib(2) == 1); + \\ assert(fib(3) == 2); + \\ assert(fib(10) == 55); + \\ assert(fib(20) == 6765); + \\ exit(); + \\} + \\ + \\fn fib(n: u32) u32 { + \\ if (n < 2) { + \\ return n; + \\ } else { + \\ return fib(n - 2) + fib(n - 1); + \\ } + \\} + \\ + \\fn assert(ok: bool) void { + \\ if (!ok) unreachable; + \\} + \\ + \\fn exit() noreturn { + \\ asm volatile ("svc #0" + \\ : + \\ : [number] "{r7}" (1), + \\ [arg1] "{r0}" (0) + \\ : "memory" + \\ ); + \\ unreachable; + \\} + , + "", + ); + } }