Re: forwarded message from H. J. Lu

[H. J. Lu]

On Tue, May 20, 2003 at 02:32:58PM -0400, John David Anglin wrote:
> > Follow
> > 
> > http://sources.redhat.com/ml/binutils/2003-04/msg00403.html
> > 
> > and all the issues it caused.
> 
> As I'm sure you know, labels on the PA have to start at the beginning
> of a new line.  They may or may not end with a colon.  There has to be
> whitespace between the label, or the start of the line if there is no
> label, and the opcode.  The opcode may contain completers.  These are
> separated from the instruction mneumonic by commas.  The opcode and the
> first operand are separated by whitespace.  Operands are separated by
> a comma.  A comment may follow the operand starting with a semicolon.
> A new statement can be started with '!' but it can't contain a label.
> 
> It would appear safe to remove whitespace after commas in the opcode
> and operand fields.  The code in tc-hppa.c assumes whitespace has
> been removed from the operands and probably from the opcode.
> 
> I still don't fully understand what caused the breakage.  It could be
> related to the ia64 label/opcode identification problem.

We no longer blindly remove whitespaces. Each backend which assumes
whitespace removed may be affected. When it happens, we will add a
testcase and fix it.


H.J.