MC: Bit pack MCSymbolData.

On x86_64 this brings it from 80 bytes to 64 bytes. Also make any member
variables private and clean up uses to go through the existing accessors.

NFC.

llvm-svn: 219573

6 files changed, 14 insertions, 15 deletions

diff --git a/llvm/lib/MC/MCAssembler.cpp b/llvm/lib/MC/MCAssembler.cpp
index 709a8defec5..25e12aa3323 100644
--- a/llvm/lib/MC/MCAssembler.cpp
+++ b/llvm/lib/MC/MCAssembler.cpp
@@ -334,11 +334,8 @@ MCSymbolData::MCSymbolData() : Symbol(nullptr) {}
 
 MCSymbolData::MCSymbolData(const MCSymbol &_Symbol, MCFragment *_Fragment,
                            uint64_t _Offset, MCAssembler *A)
-  : Symbol(&_Symbol), Fragment(_Fragment), Offset(_Offset),
-    IsExternal(false), IsPrivateExtern(false),
-    CommonSize(0), SymbolSize(nullptr), CommonAlign(0),
-    Flags(0), Index(0)
-{
+    : Symbol(&_Symbol), Fragment(_Fragment), Offset(_Offset),
+      SymbolSize(nullptr), CommonAlign(-1U), Flags(0), Index(0) {
   if (A)
     A->getSymbolList().push_back(this);
 }
@@ -1244,8 +1241,10 @@ void MCSymbolData::dump() const {
   raw_ostream &OS = llvm::errs();
 
   OS << "<MCSymbolData Symbol:" << getSymbol()
-     << " Fragment:" << getFragment() << " Offset:" << getOffset()
-     << " Flags:" << getFlags() << " Index:" << getIndex();
+     << " Fragment:" << getFragment();
+  if (!isCommon())
+    OS << " Offset:" << getOffset();
+  OS << " Flags:" << getFlags() << " Index:" << getIndex();
   if (isCommon())
     OS << " (common, size:" << getCommonSize()
        << " align: " << getCommonAlignment() << ")";
diff --git a/llvm/lib/MC/MachObjectWriter.cpp b/llvm/lib/MC/MachObjectWriter.cpp
index 7a1ab79e716..7f6d12ce238 100644
--- a/llvm/lib/MC/MachObjectWriter.cpp
+++ b/llvm/lib/MC/MachObjectWriter.cpp
@@ -41,7 +41,7 @@ void MachObjectWriter::reset() {
 bool MachObjectWriter::
 doesSymbolRequireExternRelocation(const MCSymbolData *SD) {
   // Undefined symbols are always extern.
-  if (SD->Symbol->isUndefined())
+  if (SD->getSymbol().isUndefined())
     return true;
 
   // References to weak definitions require external relocation entries; the
diff --git a/llvm/lib/MC/WinCOFFObjectWriter.cpp b/llvm/lib/MC/WinCOFFObjectWriter.cpp
index 396683ffcea..3191ba30663 100644
--- a/llvm/lib/MC/WinCOFFObjectWriter.cpp
+++ b/llvm/lib/MC/WinCOFFObjectWriter.cpp
@@ -418,9 +418,9 @@ void WinCOFFObjectWriter::DefineSymbol(MCSymbolData const &SymbolData,
       coff_symbol->Data.SectionNumber = COFF::IMAGE_SYM_ABSOLUTE;
     } else {
       const MCSymbolData &BaseData = Assembler.getSymbolData(*Base);
-      if (BaseData.Fragment) {
+      if (BaseData.getFragment()) {
         COFFSection *Sec =
-            SectionMap[&BaseData.Fragment->getParent()->getSection()];
+            SectionMap[&BaseData.getFragment()->getParent()->getSection()];
 
         if (coff_symbol->Section && coff_symbol->Section != Sec)
           report_fatal_error("conflicting sections for symbol");
@@ -715,8 +715,8 @@ void WinCOFFObjectWriter::RecordRelocation(const MCAssembler &Asm,
   // Turn relocations for temporary symbols into section relocations.
   if (coff_symbol->MCData->getSymbol().isTemporary() || CrossSection) {
     Reloc.Symb = coff_symbol->Section->Symbol;
-    FixedValue += Layout.getFragmentOffset(coff_symbol->MCData->Fragment)
-                + coff_symbol->MCData->getOffset();
+    FixedValue += Layout.getFragmentOffset(coff_symbol->MCData->getFragment()) +
+                  coff_symbol->MCData->getOffset();
   } else
     Reloc.Symb = coff_symbol;
 
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMachObjectWriter.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMMachObjectWriter.cpp
index 186776a1944..7da500390ed 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMachObjectWriter.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMachObjectWriter.cpp
@@ -428,7 +428,7 @@ void ARMMachObjectWriter::RecordRelocation(MachObjectWriter *Writer,
       // For external relocations, make sure to offset the fixup value to
       // compensate for the addend of the symbol address, if it was
       // undefined. This occurs with weak definitions, for example.
-      if (!SD->Symbol->isUndefined())
+      if (!SD->getSymbol().isUndefined())
         FixedValue -= Layout.getSymbolOffset(SD);
     } else {
       // The index is the section ordinal (1-based).
diff --git a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMachObjectWriter.cpp b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMachObjectWriter.cpp
index 2d5857fc631..df2f14a91a7 100644
--- a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMachObjectWriter.cpp
+++ b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMachObjectWriter.cpp
@@ -360,7 +360,7 @@ void PPCMachObjectWriter::RecordPPCRelocation(
       // For external relocations, make sure to offset the fixup value to
       // compensate for the addend of the symbol address, if it was
       // undefined. This occurs with weak definitions, for example.
-      if (!SD->Symbol->isUndefined())
+      if (!SD->getSymbol().isUndefined())
         FixedValue -= Layout.getSymbolOffset(SD);
     } else {
       // The index is the section ordinal (1-based).
diff --git a/llvm/lib/Target/X86/MCTargetDesc/X86MachObjectWriter.cpp b/llvm/lib/Target/X86/MCTargetDesc/X86MachObjectWriter.cpp
index ead33383009..adf3fd8e491 100644
--- a/llvm/lib/Target/X86/MCTargetDesc/X86MachObjectWriter.cpp
+++ b/llvm/lib/Target/X86/MCTargetDesc/X86MachObjectWriter.cpp
@@ -572,7 +572,7 @@ void X86MachObjectWriter::RecordX86Relocation(MachObjectWriter *Writer,
       // For external relocations, make sure to offset the fixup value to
       // compensate for the addend of the symbol address, if it was
       // undefined. This occurs with weak definitions, for example.
-      if (!SD->Symbol->isUndefined())
+      if (!SD->getSymbol().isUndefined())
         FixedValue -= Layout.getSymbolOffset(SD);
     } else {
       // The index is the section ordinal (1-based).