[lld-macho] Clean up comments

Author: int3

lld/MachO/SyntheticSections.cpp

@@ -200,7 +200,7 @@ void RebaseSection::writeTo(uint8_t *buf) const {
 NonLazyPointerSectionBase::NonLazyPointerSectionBase(const char *segname,
                                                      const char *name)
     : SyntheticSection(segname, name) {
-  align = WordSize; // vector of pointers / mimic ld64
+  align = WordSize;
   flags = MachO::S_NON_LAZY_SYMBOL_POINTERS;
 }
 
@@ -405,7 +405,9 @@ StubsSection::StubsSection()
     : SyntheticSection(segment_names::text, "__stubs") {
   flags = MachO::S_SYMBOL_STUBS | MachO::S_ATTR_SOME_INSTRUCTIONS |
           MachO::S_ATTR_PURE_INSTRUCTIONS;
-  align = 4; // machine instructions / mimic ld64
+  // The stubs section comprises machine instructions, which are aligned to
+  // 4 bytes on the archs we care about.
+  align = 4;
   reserved2 = target->stubSize;
 }
 
@@ -431,7 +433,7 @@ bool StubsSection::addEntry(Symbol *sym) {
 StubHelperSection::StubHelperSection()
     : SyntheticSection(segment_names::text, "__stub_helper") {
   flags = MachO::S_ATTR_SOME_INSTRUCTIONS | MachO::S_ATTR_PURE_INSTRUCTIONS;
-  align = 4; // machine instructions / mimic ld64
+  align = 4; // This section comprises machine instructions
 }
 
 uint64_t StubHelperSection::getSize() const {
@@ -472,12 +474,12 @@ ImageLoaderCacheSection::ImageLoaderCacheSection() {
   uint8_t *arr = bAlloc.Allocate<uint8_t>(WordSize);
   memset(arr, 0, WordSize);
   data = {arr, WordSize};
-  align = WordSize; // pointer / mimic ld64
+  align = WordSize;
 }
 
 LazyPointerSection::LazyPointerSection()
     : SyntheticSection(segment_names::data, "__la_symbol_ptr") {
-  align = WordSize; // vector of pointers / mimic ld64
+  align = WordSize;
   flags = MachO::S_LAZY_SYMBOL_POINTERS;
 }