Painful problems with -fpic implementation on powerpc-sysv
David Edelsohn
dje@watson.ibm.com
Sun Aug 23 19:12:00 GMT 1998
>>>>> Geoff Keating writes:
Geoff> Reload sees that its choices are either:
Geoff> - load immediate value in GPRs, store value to memory, load FPR back
Geoff> from memory; or
Geoff> - load FPR directly from memory.
Geoff> Naturally, it chooses the second.
That is exactly my point. reload has another alternative and is
*choosing* the load from memory based upon some cost analysis. I propose
changing the cost analysis when in reload so that the value is
materialized in GPRs and transferred via stack memory instead of a
symbol_ref.
David
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