When working out whether we can see a compressible jump-table pattern during ConstantIslands, we were stopping when we saw a debug instruction. Instead it's better to keep iterating backwards to the first real instruction.
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llvm/lib/Target/ARM/ARMConstantIslandPass.cpp | ||
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2282–2284 | I believe you should be able to use skipDebugInstructionsBackward to achieve this more concisely. |
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Oh, thanks. I thought I'd seen something like that but only turned up the IR-level ones in my search. Switched. Also sanitized some of the strings in the test.
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LGTM from a debug-info perspective; I know next to nothing about ARM though so can't venture an opinion there. A smaller test would be appreciated if that's possible.
(NB: with no reviewers this will be getting little visibility, this showed up for me as I filter for debug-info stuff).
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Thanks, resynthesized a test from a much smaller, single, switch and committed as dc700f1e4daf.
I believe you should be able to use skipDebugInstructionsBackward to achieve this more concisely.