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b451f3588d
This removes an abuse of ELF linker behaviors while keeping Mach-O/COFF linker behaviors unchanged. ELF: when module_ctor is in a comdat, this patch removes reliance on a linker abuse (an SHT_INIT_ARRAY in a section group retains the whole group) by using SHF_GNU_RETAIN. No linker behavior difference when module_ctor is not in a comdat. Mach-O: module_ctor gets `N_NO_DEAD_STRIP`. No linker behavior difference because module_ctor is already referenced by a `S_MOD_INIT_FUNC_POINTERS` section (GC root). PE/COFF: no-op. SanitizerCoverage already appends module_ctor to `llvm.used`. Other sanitizers: llvm.used for local linkage is not implemented in `TargetLoweringObjectFileCOFF::emitLinkerDirectives` (once implemented or switched to a non-local linkage, COFF can use module_ctor in comdat (i.e. generalize ELF-specific rL301586)). There is no object file size difference. Reviewed By: vitalybuka Differential Revision: https://reviews.llvm.org/D106246 |
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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 | ||
| crit-edge-sancov.ll | ||
| div-tracing.ll | ||
| gep-tracing.ll | ||
| inline-8bit-counters.ll | ||
| inline-bool-flag.ll | ||
| interposable-symbol.ll | ||
| no-func.ll | ||
| opaque-ptr.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 | ||