[Bug target/27772] mr instruction with odd-numbered register created

[uweigand at gcc dot gnu dot org]

------- Comment #2 from uweigand at gcc dot gnu dot org  2006-05-26 12:58 -------
This looks like a source-code problem.  The assembler instruction

 union {DItype __ll; struct {USItype __h, __l;} __i; } __x;
 __asm__ ("lr %N0,%1\n\tmr %0,%2" : "=&r" (__x.__ll)
                                  : "r" (__xm0), "r" (__xm1));

fundamentally assumes __ll is in fact of mode DImode, as the type name
DItype suggests -- that's (on 32-bit) what causes reload to allocate a
register *pair* for the %0 operand.

However, in your mul.i file, that type is defined as:

typedef long int DItype;

which happens to be in fact SImode ...


-- 

uweigand at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27772