Avoid q modifier for user references to arm64 vector registers

It should only be necessary for the clobber save/restore sequences.

Author: bjorn3

src/inline_asm.rs

@@ -568,20 +568,6 @@ impl<'tcx> InlineAssemblyGenerator<'_, 'tcx> {
                                         .emit(&mut generated_asm, InlineAsmArch::X86_64, *modifier)
                                         .unwrap(),
                                 },
-                                InlineAsmArch::AArch64 => match reg {
-                                    InlineAsmReg::AArch64(reg) if reg.vreg_index().is_some() => {
-                                        // rustc emits v0 rather than q0
-                                        reg.emit(
-                                            &mut generated_asm,
-                                            InlineAsmArch::AArch64,
-                                            Some(modifier.unwrap_or('q')),
-                                        )
-                                        .unwrap()
-                                    }
-                                    _ => reg
-                                        .emit(&mut generated_asm, InlineAsmArch::AArch64, *modifier)
-                                        .unwrap(),
-                                },
                                 _ => reg.emit(&mut generated_asm, self.arch, *modifier).unwrap(),
                             }
                         }