literal constant optimization bug

[HPCguy]

The function Squint.c :: rename_register1() does literal constant optimizations, and is currently unsafe. I suggest commenting out that optimization until this ticket is closed.

This bug might only occur for chained literal constant assignment:

a = b = c = 0.0;

In the case of chained literal assignment, a workaround is likely as easy as:

a = 0.0;
b = 0.0;
c = 0.0;

This bug gives me an excuse to refactor how I handle literal constants in general (which are tricky on ARM since they are embedded in inactive parts of the instruction stream). Sorry that I am not doing a more direct fix, but I do not yet have any heavy users of Squint.c .

Since I am currently in the midst of a serious medical issue, I may not have the energy to get to this for at least several more weeks.