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[LLD][ELF] Add test cases for range extension thunks (no linkerscripts)

Authored by peter.smith on Apr 4 2017, 4:47 AM.



Add test cases for range extension thunks that do not use linkerscripts. These include tests for:

  • OutputSection larger than Thumb2 branch range
  • Range extension thunks to PLT
  • Mix of ARM and Thumb range extension thunks
  • Special case of Thumb condition branch with short range of 1Mb
  • Thunks drifting out of range

Testing range extension thunks isn't pleasant as testing some of the cases needs a single large OutputSection. I've also found that llvm-objdump doesn't handle large files very well so I've had to do multiple calls with restricted address ranges. The disassembly of branch targets is not good either.

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peter.smith created this revision.Apr 4 2017, 4:47 AM

Updated diff to reflect recent changes to padding between sections. This is patch 10/11 of the range thunks implementation.

ruiu edited edge metadata.Jul 11 2017, 6:57 PM

This looks good, but don't you want to submit these tests with the patches that implement the range extension thunk feature?

peter.smith abandoned this revision.Jul 13 2017, 9:13 AM

I've added these tests into D34691 and D34692 so this revision is no longer needed.