[Bug optimization/11440] [3.3 regression] gcc-3.3.1 miscompiles c++ code with -O2, -fno-gcse cures it

["pinskia at physics dot uc dot edu" <gcc-bugzilla at gcc dot gnu dot org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11440



------- Additional Comments From pinskia at physics dot uc dot edu  2003-07-11 00:05 -------
No GCSE should not put the REG_EQUAL there.
Here is the definition of zero_extract's agruments:
/* Reference to a signed bit-field of specified size and position.   
   Operand 0 is the memory unit (usually SImode or QImode) which
   contains the field's first bit.  Operand 1 is the width, in bits.
   Operand 2 is the number of bits in the memory unit before the 
   first bit of this field.
   If BITS_BIG_ENDIAN is defined, the first bit is the msb and
   operand 2 counts from the msb of the memory unit.
   Otherwise, the first bit is the lsb and operand 2 counts from
   the lsb of the memory unit.  */