[PATCH] D89841: [ELF] --gc-sections: retain dependent sections of non-SHF_ALLOC sections

[Fangrui Song via Phabricator via llvm-commits]

MaskRay updated this revision to Diff 299532.
MaskRay added a comment.

Drop an unneeded change


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D89841/new/

https://reviews.llvm.org/D89841

Files:
  lld/ELF/MarkLive.cpp
  lld/test/ELF/gc-sections-linkorder2.s


Index: lld/test/ELF/gc-sections-linkorder2.s
===================================================================
--- lld/test/ELF/gc-sections-linkorder2.s
+++ lld/test/ELF/gc-sections-linkorder2.s
@@ -14,3 +14,9 @@
 .quad 0
 .section .zed,"ao", at progbits,.foo
 .quad 0
+
+.section .nonalloc
+.quad 0
+
+.section .nonalloc_linkorder,"o", at progbits,.nonalloc
+.quad 0
Index: lld/ELF/MarkLive.cpp
===================================================================
--- lld/ELF/MarkLive.cpp
+++ lld/ELF/MarkLive.cpp
@@ -370,8 +370,11 @@
     bool isLinkOrder = (sec->flags & SHF_LINK_ORDER);
     bool isRel = (sec->type == SHT_REL || sec->type == SHT_RELA);
 
-    if (!isAlloc && !isLinkOrder && !isRel && !sec->nextInSectionGroup)
+    if (!isAlloc && !isLinkOrder && !isRel && !sec->nextInSectionGroup) {
       sec->markLive();
+      for (InputSection *isec : sec->dependentSections)
+        isec->markLive();
+    }
   }
 
   // Follow the graph to mark all live sections.


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