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[Bug target/29329] [4.1 regression] internal consistency failure at -O2



------- Comment #2 from pinskia at gcc dot gnu dot org  2006-10-08 02:10 -------
(In reply to comment #0)
> compilation with -O0:
> 
> $ gcc -c -fPIC -g -O0 -g tree234.i
> /tmp/cco6vA7j.s: Assembler messages:
> /tmp/cco6vA7j.s:172: Error: Rn must not overlap other operands -- `swpb
> r3,r2,[r3]'

That is a bug in the source:
 asm volatile(
   "# here \n\t"
   "swpb %0, %1, [%2] \n\t"
   : "=r" (val)
   : "r"(1), "r" (lock) : "memory"
 );

I don't know how to fix that in the inline-asm.  Maybe an early clobber can fix
that.  I doubt this is related to the ICE anyways.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29329


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