Do not emit a named symbol to denote the start of the debug_frame section

When emitting a debug_frame section, it contains a named symbol.

> echo "void foo(void) {}" | clang -arch arm64  -ffreestanding -g -c -o \
/tmp/test.o -x c -
> nm /tmp/test.o -s __DWARF __debug_frame
0000000000000200 s ltmp1

There are no such symbols emitted in any of the other DWARF sections,
this is because when the __debug_frame section is created, it doesn't
get a `BeginSymName` and so it creates a named symbol, such as `ltmp1`
and emits it when we switch to the section in MCDwarf.cpp.

This patch fixes the above issue.

Differential Revision: https://reviews.llvm.org/D153484

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/MC/MCObjectFileInfo.cpp b/llvm/lib/MC/MCObjectFileInfo.cpp
index d3b9fa45..9fceaa2 100644
--- a/llvm/lib/MC/MCObjectFileInfo.cpp
+++ b/llvm/lib/MC/MCObjectFileInfo.cpp
@@ -249,7 +249,7 @@ void MCObjectFileInfo::initMachOMCObjectFileInfo(const Triple &T) {
                            SectionKind::getMetadata(), "section_line_str");
   DwarfFrameSection =
       Ctx->getMachOSection("__DWARF", "__debug_frame", MachO::S_ATTR_DEBUG,
-                           SectionKind::getMetadata());
+                           SectionKind::getMetadata(), "section_frame");
   DwarfPubNamesSection =
       Ctx->getMachOSection("__DWARF", "__debug_pubnames", MachO::S_ATTR_DEBUG,
                            SectionKind::getMetadata());