Displaying 2 results from an estimated 2 matches for "whendirectly".
2015 Jul 05
2
[LLVMdev] ARM Jump table pcrelative relaxation in clang / llc
Hi,
I have written a PassManager (IR) pass that seriously increases the size of
the original IR code.
As a result it seems that the generated machine code is incorrect (as of
LLVM 3.5): The AsmPrinter generates the following instruction :
adr r2, .LJTI4_0_0
when going through the MC streamer, I get a "fatal error: error in backend:
out of range pc-relative fixup" .
Apparently, the fixup
2015 Jul 06
3
[LLVMdev] ARM Jump table pcrelative relaxation in clang / llc
...irly recently fixed a bug that looks very similar (r238680,which
was well after 3.6)*
If I wanted to back port that to 3.5 where should I look at? Where in the
ARM backend the decision to relax an instruction is taken?
*That's weird. Even with "-filetype=obj" (the bug only occurs whendirectly
writing an object file)? Not that it really affects anything,getting the
same backend options with llc can be a bit tricky.*
This is passing even with -filetype=obj. The transformation I apply are in
the optimizer so I must build the new bc to create the object file.
Thanks for your help
Eric
L...