HAIFA-question/bug

[Jeffrey A Law]

  In message < 9801201701.AA16194@occam.informatik.uni-dortmund.de >you write:
  > I have a question about the usage of the instruction-scheduler on a 
  > i586-pc-linux-gnu:
  > If I understood it right, I have to configure egcs with --enable-haifa,
  > build it and then call g++ with -fschedule-insns / -fschedule-insns2.
Correct.  If you don't use --enable-haifa, then you get the old scheduler.

  > I have got strange results with it:
  > 1. First I build a version without --enable-haifa. But objectfiles with
  >    and without -fschedule-insns were different.
No suprise.  The old scheduler will be used if you don't enable haifa.

  > 2. Compiled with the "haifa-egcs", the program behaved differently with
  >    and without -fschedule-insns. 
This would indicate either a bug in haifa or a bug in your program.  You'll
actually have to debug it to figure out which.

jeff