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mos6502instrinfo
2016 Feb 12
3
Experimental 6502 backend; memory operand folding problem
...y operands. In the test file above,
in @testSum, switch %a, %b to %b, %a. llc will assert in Register Spilling:
"Remaining use wasn't a snippet copy". Debug output shows STRabs being
generated,
followed by an attempted fold of a stack-load into ADDabs.
I must be on the wrong track in M6502InstrInfo::foldMemoryOperandImpl. If
someone could please explain this error, it would really help. Thanks!
- Nolan