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On Mon, Dec 27, 2004 at 09:27:08PM -0500, Daniel Berlin wrote:The dwarf3 standard says we can't have location list entries where the begin and end addresses are the same (except for the list terminator entry, which is begin == 0 && end == 0).
What a suck-ass rule. Because,
All this tells you is that there's an insn. It doesn't say that the insn expands to a non-zero number of assembly instructions. E.g.
asm ("" : "=r" (x) :"0"(x));
which has legitimate uses. There are also insns that the backend expands to zero instructions that exist to keep the optimizer happy.
But I guess there's not a whole lot you can do about this.
r~
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