PPC64 Compiler bug !!

fleming at austin.ibm.com fleming at austin.ibm.com
Sat Jun 14 01:16:47 EST 2003

> With lazy FP save/restore in Linux we have the extra cost of taking an
> exception the first time (after a context switch) we use an FP temporary.
> Im guessing AIX doesnt do this.

AIX does lazy floating point save/restore, though perhaps not in the
same way as Linux.  So the behavior of a program (in AIX) that uses
fprs for temp registers depends on the fp usage of other programs
running on that CPU.

fleming at austin.ibm.com

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