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Actually I wonder if the linker could modify the instruction to use r0 instead of gp if the offset from gp is out of range but a valid offset from r0? There is a specific error message so there must be some specific code.
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I really like that idea! It also fits the zeitgeist of doing much more stuff at linktime -- basically Creeping Full-program Optimization. (The Mlton compiler has been doing that for ages; mainstream efforts like LLVM are now getting into the game too.) The Mentor release has link-time optimization on enabled by a -lto flag. The Altera ACDS 13.1 release will not, because I haven't had time to check it out. Altera keeps me pretty busy just putting out major fires.
BTW, Mentor wasn't happy about my tossing a batch of unrelated third-party patches at them. They want me to check them out one by one myself for validity and submit them as separate issues. Understandably. And as usual I have Critical level stuff I need to do first.
“The mills of the gods
grind slowly,
but they grind exceedingly fine.” -- English Proverb
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