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95d9b0ea49
`__sancov_pcs` parallels the other metadata section(s). While some optimizers (e.g. GlobalDCE) respect linker semantics for comdat and retain or discard the sections as a unit, some (e.g. GlobalOpt/ConstantMerge) do not. So we have to conservatively retain all unconditionally in the compiler. When a comdat is used, the COFF/ELF linkers' GC semantics ensure the associated parallel array elements are retained or discarded together, so `llvm.compiler.used` is sufficient. Otherwise (MachO (see rL311955/rL311959), COFF special case where comdat is not used), we have to use `llvm.used` to conservatively make all sections retain by the linker. This will fix the Windows problem once internal linkage GlobalObject's in `llvm.used` are retained via `/INCLUDE:`. Reviewed By: morehouse, vitalybuka Differential Revision: https://reviews.llvm.org/D97432 |
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| .. | ||
| abort-in-entry-block.ll | ||
| backedge-pruning.ll | ||
| chains.ll | ||
| cmp-tracing-api-x86_32.ll | ||
| cmp-tracing-api-x86_64.ll | ||
| cmp-tracing.ll | ||
| coff-comdat.ll | ||
| coff-pc-table-inline-8bit-counters.ll | ||
| coff-pc-table-inline-bool-flag.ll | ||
| coff-used-ctor.ll | ||
| const-cmp-tracing.ll | ||
| coverage2-dbg.ll | ||
| coverage-dbg.ll | ||
| coverage.ll | ||
| div-tracing.ll | ||
| gep-tracing.ll | ||
| inline-8bit-counters.ll | ||
| inline-bool-flag.ll | ||
| interposable-symbol.ll | ||
| no-func.ll | ||
| pc-table.ll | ||
| postdominator_check.ll | ||
| seh.ll | ||
| stack-depth-variable-declared-by-user.ll | ||
| stack-depth.ll | ||
| switch-tracing.ll | ||
| trace-pc-guard-inline-8bit-counters.ll | ||
| trace-pc-guard-inline-bool-flag.ll | ||
| trace-pc-guard.ll | ||
| tracing-comdat.ll | ||
| tracing.ll | ||
| unreachable-critedge.ll | ||
| wineh.ll | ||