[LLVMdev] debug info for global variables when optimising

[Dale Johannesen]

On May 29, 2009, at 6:24 AMPDT, Jay Foad wrote:

> I see that llvm-gcc now has some support for generating debug info
> when optimising - thanks!
>
> However, it still doesn't generate debug info for global variables
> when optimising. Is there any reason for this? With the attached
> patch, the whole test suite passes for me with TEST=ipodbgopt.

The reason is given in the comment your patch deletes.  Having debug  
info affect the codegen is pretty bad, because you get situations  
where a bug goes away when you turn on debug info,  and you can't  
debug it.

TEST=ipodbgopt currently runs through -strip-debug-declare  
immediately, which would hide such cases.  Try it with that flag  
removed and I bet you'll see some failures.

> Thanks,
> Jay.
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