Mark ELF sections whose name start with .note as note
Previously, such section would be marked as SHT_PROGBITS which
makes it impossible to use an initialized C variable declaration
to emit an (allocated) ELF note. The new behavior is also consistent
with ELF assembly parser.
Differential Revision: https://reviews.llvm.org/D24692
llvm-svn: 282010
diff --git a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index 218b45c9e..b8339ee 100644
--- a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -151,6 +151,11 @@
static unsigned getELFSectionType(StringRef Name, SectionKind K) {
+ // Use SHT_NOTE for section whose name starts with ".note" to allow
+ // emitting ELF notes from C variable declaration.
+ // See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77609
+ if (Name.startswith(".note"))
+ return ELF::SHT_NOTE;
if (Name == ".init_array")
return ELF::SHT_INIT_ARRAY;