http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50434
Bug #: 50434
Summary: genmodes.c hardcodes size of CCmode
Classification: Unclassified
Product: gcc
Version: 4.6.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: paulo.ma...@csr.com
The size of CCmode is harcoded in genmodes.c as 4 bytes:
case MODE_CC:
/* Again, nothing more need be said. For historical reasons,
the size of a CC mode is four units. */
validate_mode (m, UNSET, UNSET, UNSET, UNSET, UNSET);
m->bytesize = 4;
m->ncomponents = 1;
m->component = 0;
break;
However, this seems to work when the size of a byte is 8 bits, however, if this
changes then things start to break. I have a backend where a byte is 16 bits
(size of a word and unit and also size of int) and m->bytesize = 1; is the
correct value.
Paul Koning suggested making it equal to word size.
Thread is :
http://www.mail-archive.com/gcc@gcc.gnu.org/msg59864.html
