IR Line Number

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#1

Is there a way to print the IR (file) line number of a arbitrary llvm instruction?

I’m debugging an analysis pass and it would help a lot if I could exactly identify which instruction I’m outputting information about on the screen.

Thanks.

#2

Hi,

I'm debugging an analysis pass and it would help a lot if I could exactly
identify which instruction I'm outputting information about on the screen.

Usually there's no concept of line number in the in-memory data
structures (.bc is equally valid input and doesn't have lines).

If you run the "debug-ir" pass before yours it'll add Dwarf info to
each instruction, which describes what you want. You can then access
it with Instruction::getDebugLoc.

Cheers.

Tim.

#3

Hi Tim,

it worked perfectly.

Thank you.

Hi,

I’m debugging an analysis pass and it would help a lot if I could exactly
identify which instruction I’m outputting information about on the screen.

Usually there’s no concept of line number in the in-memory data
structures (.bc is equally valid input and doesn’t have lines).

If you run the “debug-ir” pass before yours it’ll add Dwarf info to
each instruction, which describes what you want. You can then access
it with Instruction::getDebugLoc.

Cheers.

Tim.