[LLVMdev] [patch] New feature: debug info for function memory ranges (-jit-emit-debug-function-range)

[Yuri]

This new option (--jit-emit-debug-function-range) will allow to output 
function information for memory ranges that functions occupy in memory 
while they run in JIT. File format generated is like this:
...
0x5000000 0x5001000 function_name_is_here
...

This feature is useful for external tools like valgrind and 
google-perftools to profile the code when it is run in JIT. Particularly 
google-perftools will have a special option (--external_symbols) that 
will be able to import this file.

Note: to be useful this flag should be used with -disable-fp-elim to 
generate standard prologs.

Thank you,
Yuri

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