Subject: Re: I want to rid ugly float load/stores used only for data movement
To: None <firstname.lastname@example.org>
From: der Mouse <mouse@Rodents.Montreal.QC.CA>
Date: 02/22/2003 18:51:50
> Your intent cannot be implemented safely in GCC. If GCC knows it has
> FPRs and FPRs hold 64-bit values (which they must), it will use them
> for 64-bit moves. Cannot be avoided safely.
That sounds as though it's going to be disastrous as soon as gcc runs
into an archtecture where floating-point registers cannot hold
arbitrary bit patterns innocuously - an example, to borrow some
terminology from IEEE floats, might be a machine that traps when you
try to floating-load a signaling NaN into a floating-point register.
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