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| author | Matthew Pickering <matthewtpickering@gmail.com> | 2016-11-16 15:59:32 +0000 |
|---|---|---|
| committer | Matthew Pickering <matthewtpickering@gmail.com> | 2016-11-16 16:03:48 +0000 |
| commit | 8dfca69f2339d8d6719f57a4592d35c7d09cca5f (patch) | |
| tree | c6319798594e8c51ecc676b0823d098e36b1a2e4 /compiler/NOTES | |
| parent | d3542fad4b72b807dd1ece415a903fb08f1e490f (diff) | |
| download | haskell-8dfca69f2339d8d6719f57a4592d35c7d09cca5f.tar.gz | |
Inline compiler/NOTES into X86/Ppr.hs
Reviewers: austin, bgamari
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D2721
Diffstat (limited to 'compiler/NOTES')
| -rw-r--r-- | compiler/NOTES | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/compiler/NOTES b/compiler/NOTES deleted file mode 100644 index 14a1f80b41..0000000000 --- a/compiler/NOTES +++ /dev/null @@ -1,16 +0,0 @@ -Note [Subsections Via Symbols] - -If we are using the .subsections_via_symbols directive -(available on recent versions of Darwin), -we have to make sure that there is some kind of reference -from the entry code to a label on the _top_ of of the info table, -so that the linker will not think it is unreferenced and dead-strip -it. That's why the label is called a DeadStripPreventer (_dsp). - -The LLVM code gen already creates `iTableSuf` symbols, where -the X86 would generate the DeadStripPreventer (_dsp) symbol. -Therefore all that is left for llvm code gen, is to ensure -that all the `iTableSuf` symbols are marked as used. -As of this writing the documentation regarding the -.subsections_via_symbols and -dead_stip can be found at -<https://developer.apple.com/library/mac/documentation/DeveloperTools/Reference/Assembler/040-Assembler_Directives/asm_directives.html#//apple_ref/doc/uid/TP30000823-TPXREF101>
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