PR 15492: floating-point arguments are loaded too early to x87 stack

[James E Wilson]

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