diff --git a/lld/MachO/OutputSection.h b/lld/MachO/OutputSection.h
--- a/lld/MachO/OutputSection.h
+++ b/lld/MachO/OutputSection.h
@@ -36,8 +36,8 @@
   // as-is so their file size is the same as their address space size.
   virtual uint64_t getFileSize() const { return getSize(); }
 
-  // Hidden sections omit header content, but body content is still present.
-  virtual bool isHidden() const { return !this->isNeeded(); }
+  // Hidden sections omit header content, but body content may still be present.
+  virtual bool isHidden() const { return false; }
   // Unneeded sections are omitted entirely (header and body).
   virtual bool isNeeded() const { return true; }
 
diff --git a/lld/MachO/OutputSegment.h b/lld/MachO/OutputSegment.h
--- a/lld/MachO/OutputSegment.h
+++ b/lld/MachO/OutputSegment.h
@@ -51,6 +51,7 @@
   OutputSection *getOrCreateOutputSection(StringRef name);
   void addOutputSection(OutputSection *os);
   void sortOutputSections(OutputSegmentComparator *comparator);
+  void removeUnneededSections();
 
   const SectionMap &getSections() const { return sections; }
   size_t numNonHiddenSections() const;
diff --git a/lld/MachO/OutputSegment.cpp b/lld/MachO/OutputSegment.cpp
--- a/lld/MachO/OutputSegment.cpp
+++ b/lld/MachO/OutputSegment.cpp
@@ -40,7 +40,7 @@
   size_t count = 0;
   for (const OutputSegment::SectionMapEntry &i : sections) {
     OutputSection *os = i.second;
-    count += (os->isHidden() ? 0 : 1);
+    count += (!os->isHidden() ? 1 : 0);
   }
   return count;
 }
@@ -70,6 +70,12 @@
   llvm::stable_sort(sections, *comparator->sectionComparator(this));
 }
 
+void OutputSegment::removeUnneededSections() {
+  sections.remove_if([](const std::pair<StringRef, OutputSection *> &p) {
+    return !p.second->isNeeded();
+  });
+}
+
 OutputSegmentComparator::OutputSegmentComparator() {
   // This defines the order of segments and the sections within each segment.
   // Segments that are not mentioned here will end up at defaultPosition;
@@ -138,9 +144,8 @@
     seg->sortOutputSections(&comparator);
     for (auto &p : seg->getSections()) {
       OutputSection *section = p.second;
-      if (!section->isHidden()) {
+      if (!section->isHidden())
         section->index = ++sectionIndex;
-      }
     }
   }
 }
diff --git a/lld/MachO/Writer.cpp b/lld/MachO/Writer.cpp
--- a/lld/MachO/Writer.cpp
+++ b/lld/MachO/Writer.cpp
@@ -114,7 +114,7 @@
     c->maxprot = seg->maxProt;
     c->initprot = seg->initProt;
 
-    if (!seg->isNeeded())
+    if (seg->getSections().empty())
       return;
 
     c->vmaddr = seg->firstSection()->addr;
@@ -126,6 +126,7 @@
       StringRef s = p.first;
       OutputSection *section = p.second;
       c->filesize += section->getFileSize();
+
       if (section->isHidden())
         continue;
 
@@ -283,10 +284,8 @@
 
   uint8_t segIndex = 0;
   for (OutputSegment *seg : outputSegments) {
-    if (seg->isNeeded()) {
-      headerSection->addLoadCommand(make<LCSegment>(seg->name, seg));
-      seg->index = segIndex++;
-    }
+    headerSection->addLoadCommand(make<LCSegment>(seg->name, seg));
+    seg->index = segIndex++;
   }
 
   uint64_t dylibOrdinal = 1;
@@ -327,6 +326,17 @@
         ->getOrCreateOutputSection(isec->name)
         ->mergeInput(isec);
   }
+
+  // Remove unneeded segments and sections.
+  // TODO: Avoid creating unneeded segments in the first place
+  for (auto it = outputSegments.begin(); it != outputSegments.end();) {
+    OutputSegment *seg = *it;
+    seg->removeUnneededSections();
+    if (!seg->isNeeded())
+      it = outputSegments.erase(it);
+    else
+      ++it;
+  }
 }
 
 void Writer::assignAddresses(OutputSegment *seg) {
diff --git a/lld/test/MachO/section-merge.s b/lld/test/MachO/section-merge.s
--- a/lld/test/MachO/section-merge.s
+++ b/lld/test/MachO/section-merge.s
@@ -23,9 +23,9 @@
 # DATA:        {{0*}}[[#%x,BASE:]] <_some_function>:
 # DATA-NEXT:             [[#BASE]]: 48 c7 c0 01 00 00 00          movq    $1, %rax
 # DATA-NEXT:       [[#BASE + 0x7]]: c3                            retq
-# DATA:      {{0*}}[[#BASE + 0x8]] <_main>:
-# DATA-NEXT:       [[#BASE + 0x8]]: 48 c7 c0 00 00 00 00          movq    $0, %rax
-# DATA-NEXT:       [[#BASE + 0xf]]: c3                            retq
+# DATA:        {{0*}}[[#%x,MAIN:]] <_main>:
+# DATA-NEXT:             [[#MAIN]]: 48 c7 c0 00 00 00 00          movq    $0, %rax
+# DATA-NEXT:       [[#MAIN + 0x7]]: c3                            retq
 
 .section __TEXT,__text
 .global _main