[Issue 22658] New: Inline asm rejects [RIP+RAX] but not [RAX+RIP]

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22658

          Issue ID: 22658
           Summary: Inline asm rejects [RIP+RAX] but not [RAX+RIP]
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Keywords: accepts-invalid, iasm
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: maxhaton at gmail.com

```
extern(C)
void bdasm()
{
    asm {
    naked;
        mov EAX, [RAX+RIP];
        //mov EAX, [RIP+RAX];
    }
}
```

The error message is also terrible when it the check works.

GNU AS rejects this correctly with the following:
```
simple.s: Assembler messages:
simple.s:15: Error: `[RIP+RAX]' is not a valid base/index expression
```

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