Oliver Stannard c808e665ce [DebugInfo] Don't emit .loc directive with all values zero (#109978) ...

When emitting debug info for code alignment, it was possible to emit a
.loc directive with a file number of zero, which is invalid for DWARF 4
and earlier. This happened because getCurrentDwarfLoc() returned a
zero-initialised value when there hadn't been a previous .loc directive
emitted.

---------

Co-authored-by: Paul T Robinson <paul.robinson@sony.com>

2024-09-26 09:24:30 +01:00

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align-func-start.ll

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big-endian-bitfield.ll

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big-endian-dump.ll

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bitfield.ll

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call-site-info-output.ll

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cfi-eof-prologue.mir

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constant-dbgloc.ll

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dwarfdump-rela.yaml

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entry-value-multi-byte-expr.ll

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float-args.ll

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float-stack-arg.ll

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hardware-loop-phi-insertion.ll

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header.ll

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illegal-fragment.ll

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instr-ref-tcreturn.ll

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line.test

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lit.local.cfg

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little-endian-dump.ll

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lowerbdgdeclare_vla.ll

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machine-cp-updates-dbg-reg.mir

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move-dbg-value-after-value-list.mir

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move-dbg-value-lists.mir

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move-dbg-value-same-reg.mir

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move-dbg-values-imm-test.mir

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move-dbg-values.mir

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multiple-constant-uses-drops-dbgloc.ll

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partial-subreg.ll

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PR16736.ll

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PR26163.ll

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processes-relocations.ll

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prologue_end.ll

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ropi.ll

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rwpi.ll

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s-super-register.ll

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salvage-debug-info.ll

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sdag-split-arg1.ll

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sdag-split-arg.ll

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selectiondag-deadcode.ll

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single-constant-use-preserves-dbgloc.ll

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split-complex.ll

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sroa-complex.ll

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tls.ll

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