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Re: PR 15492: floating-point arguments are loaded too early to x87 stack
Uros Bizjak wrote:
Is there everything OK with fsched-insn2 for pentum4 case?
The problem here is that we have no DFA scheduler for pentium4, and we
also have no default scheduling info. As a result, the compiler assumes
that almost everything takes 1 cycle. This is unlikely to result in a
good schedule.
Someone will have to write a DFA scheduler for pentium4 if we want good
code for that target.
I say almost everything, because in the ppro.md file, the reservation
for call instruction is missing the cpu==pentiumpro check, and hence it
applies to pentium4 also. I suspect this is a bug, but it could be an
undocumented misfeature.
--
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com