long comparisons. As of this date, this change hasn't made it into
the development sources. We must consider this when it comes time
to integrate a newer gcc release.
Thu Mar 7 01:16:23 1996 J"orn Rennecke (amylaar@meolyon.hanse.de)
* expmed.c (negate_rtx): Don't negate LONG_MIN if mode is wider
than HOST_WIDE_INT.
gcc now produces worse code for this test case than gcc 2.5.8 when
invoked with -O , but it will optimize as good as gcc 2.5.8 (i.e. all
comparisons vanish) when invoked with -O2 , thus I think it doesn't
matter. If anyone is interested in looking into this, the code in
expr.c, function expand_expr, case MINUS_EXPR, if-clause for if
(TREE_UNSIGNED (type) || TREE_OVERFLOW (negated)), will refuse to
convert the subtraction into an addition if there is an overflow in
the conversion or negation of the constant. If both host and target
machine are binary computers with 2-complement representation, the
overflow should not matter.
instructions which have to be emulated by the operating system on that
chip. This code will still run on M68020, M68030 and M68040, but
might be a bit slower on those chips.
trivial multicast support, and support for xon/xoff output flow
control to the PPP subsystem. Fixed several bugs, including making
the accumulation and resetting of statistics more consistent. State
for the VJ compressor is now dynamically allocated.
prototype in sys/systm.h (which was just put in in by christos)
with revision 1.43 of sys/systm.h
revision 1.43
date: 1996/03/14 18:59:12; author: christos; state: Exp; lines: +1 -3
systm.h: Bring Debugger() prototype into scope.
- softclock was called with extra argument.
- missing %x formats in printf's
- kgdb_copy called with only two arguments.
Fix conf.c so that it used the _conf.h files from other places instead of
rolling its own.
the label; calculating based on the disk geometry is not always
accurate (notably, for SCSI disks). Also be a bit more careful
about printing out fixed-width types.
conflict with the floppy driver.
conf.h: Protect against multiple inclusions. The reason will become apparent
soon.
systm.h: Bring Debugger() prototype into scope.
hook (pci_md_attach_hook()) to do any machine-dependent attachment
gunk, e.g. on the i386 printing out the configuration mode (if bus 0)
(2) don't pass max device number for a given bus in, use
PCI_MAX_DEVICE_NUMBER, which can be defined on a per-machine basis.
(defaults to 32. on i386, it's 32 if pci conf mode == 1, 16 if 2.)
pcibus and pci.
(2) remove the #ifdef i386 from pci.c, and provide a machine-dependent
hook (pci_md_attach_hook()) to do any machine-dependent attachment
gunk, e.g. on the i386 printing out the configuration mode (if bus 0)
(3) don't pass max device number for a given bus in, use
PCI_MAX_DEVICE_NUMBER, which can be defined on a per-machine basis.
(defaults to 32. on i386, it's 32 if pci conf mode == 1, 16 if 2.)
jtc