Fangrui Song 9e33c09647 [ELF] Keep orphan section names (.rodata.foo .text.foo) unchanged if !hasSectionsCommand ...

This behavior matches GNU ld and seems reasonable.

```
// If a SECTIONS command is not specified
.text.* -> .text
.rodata.* -> .rodata
.init_array.* -> .init_array
```

A proposed Linux feature CONFIG_FG_KASLR may depend on the GNU ld behavior.

Reword a comment about -z keep-text-section-prefix and a comment about
CommonSection (deleted by rL286234).

Reviewed By: grimar

Differential Revision: https://reviews.llvm.org/D75225

2020-03-23 10:30:06 -07:00

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