AIX regression due to DFA scheduler merge

law@redhat.com law@redhat.com
Sun Jun 2 20:12:00 GMT 2002


 In message <200206020236.WAA23556@makai.watson.ibm.com>, David Edelsohn 
writes:
 > With the libcall patch, insn 2951 (plus:SI) is scheduled before insn 1711
 > and insn 1715 on which it has anti-dependence.  Without the libcall patch,
 > it is scheduled after those instructions where reg:SI 791 is used.
 > 
 > 	I would really appreciate some help debugging why the instruction
 > is being moved across the dependency.  I will be happy to send
 > pre-processed input and any RTL dumps people want to browse.
I would recommend using -fsched-verbose to dump the dependencies to verify
that they actually are correct.

jeff




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