src/test/ui/asm/aarch64/bad-reg.rs

   1 // only-aarch64
   2 // compile-flags: -C target-feature=+neon
   3
   4 #![feature(asm_const, asm_sym)]
   5
   6 use std::arch::asm;
   7
   8 fn main() {
   9     let mut foo = 0;
  10     let mut bar = 0;
  11     unsafe {
  12         // Bad register/register class
  13
  14         asm!("{}", in(foo) foo);
  15         //~^ ERROR invalid register class `foo`: unknown register class
  16         asm!("", in("foo") foo);
  17         //~^ ERROR invalid register `foo`: unknown register
  18         asm!("{:z}", in(reg) foo);
  19         //~^ ERROR invalid asm template modifier for this register class
  20         asm!("{:r}", in(vreg) foo);
  21         //~^ ERROR invalid asm template modifier for this register class
  22         asm!("{:r}", in(vreg_low16) foo);
  23         //~^ ERROR invalid asm template modifier for this register class
  24         asm!("{:a}", const 0);
  25         //~^ ERROR asm template modifiers are not allowed for `const` arguments
  26         asm!("{:a}", sym main);
  27         //~^ ERROR asm template modifiers are not allowed for `sym` arguments
  28         asm!("", in("x29") foo);
  29         //~^ ERROR invalid register `x29`: the frame pointer cannot be used as an operand
  30         asm!("", in("sp") foo);
  31         //~^ ERROR invalid register `sp`: the stack pointer cannot be used as an operand
  32         asm!("", in("xzr") foo);
  33         //~^ ERROR invalid register `xzr`: the zero register cannot be used as an operand
  34         asm!("", in("x19") foo);
  35         //~^ ERROR invalid register `x19`: x19 is used internally by LLVM and cannot be used as an operand for inline asm
  36
  37         asm!("", in("p0") foo);
  38         //~^ ERROR register class `preg` can only be used as a clobber, not as an input or output
  39         //~| ERROR type `i32` cannot be used with this register class
  40         asm!("", out("p0") _);
  41         asm!("{}", in(preg) foo);
  42         //~^ ERROR register class `preg` can only be used as a clobber, not as an input or output
  43         //~| ERROR type `i32` cannot be used with this register class
  44         asm!("{}", out(preg) _);
  45         //~^ ERROR register class `preg` can only be used as a clobber, not as an input or output
  46
  47         // Explicit register conflicts
  48         // (except in/lateout which don't conflict)
  49
  50         asm!("", in("x0") foo, in("w0") bar);
  51         //~^ ERROR register `x0` conflicts with register `x0`
  52         asm!("", in("x0") foo, out("x0") bar);
  53         //~^ ERROR register `x0` conflicts with register `x0`
  54         asm!("", in("w0") foo, lateout("w0") bar);
  55         asm!("", in("v0") foo, in("q0") bar);
  56         //~^ ERROR register `v0` conflicts with register `v0`
  57         asm!("", in("v0") foo, out("q0") bar);
  58         //~^ ERROR register `v0` conflicts with register `v0`
  59         asm!("", in("v0") foo, lateout("q0") bar);
  60     }
  61 }