[opt] Hoist the call throuh SymbolBody::getReplacement out of the inline

method to get a SymbolBody and into the callers, and kill now dead
includes.

This removes the need to have the SymbolBody definition when we're
defining the inline method and makes it a better inline method. That was
the only reason for a lot of header includes here. Removing these and
using forward declarations actually uncovers a bunch of cross-header
dependencies that I've fixed while I'm here, and will allow me to
introduce some *important* inline code into Chunks.h that requires the
definition of ObjectFile.

No functionality changed at this point.

Differential Revision: http://reviews.llvm.org/D10789

llvm-svn: 240982

lld/COFF/Chunks.cpp

@@ -58,7 +58,8 @@ void SectionChunk::writeTo(uint8_t *Buf) {
   // Apply relocations.
   for (const coff_relocation &Rel : Relocs) {
     uint8_t *Off = Buf + FileOff + Rel.VirtualAddress;
-    SymbolBody *Body = File->getSymbolBody(Rel.SymbolTableIndex);
+    SymbolBody *Body =
+        File->getSymbolBody(Rel.SymbolTableIndex)->getReplacement();
     uint64_t S = cast<Defined>(Body)->getRVA();
     uint64_t P = RVA + Rel.VirtualAddress;
     switch (Rel.Type) {
@@ -85,7 +86,7 @@ void SectionChunk::mark() {
 
   // Mark all symbols listed in the relocation table for this section.
   for (const coff_relocation &Rel : Relocs) {
-    SymbolBody *B = File->getSymbolBody(Rel.SymbolTableIndex);
+    SymbolBody *B = File->getSymbolBody(Rel.SymbolTableIndex)->getReplacement();
     if (auto *D = dyn_cast<DefinedRegular>(B))
       D->markLive();
   }
@@ -114,7 +115,8 @@ void SectionChunk::getBaserels(std::vector<uint32_t> *Res, Defined *ImageBase) {
     // address never changes even if image is relocated.
     if (Rel.Type != IMAGE_REL_AMD64_ADDR64)
       continue;
-    SymbolBody *Body = File->getSymbolBody(Rel.SymbolTableIndex);
+    SymbolBody *Body =
+        File->getSymbolBody(Rel.SymbolTableIndex)->getReplacement();
     if (Body == ImageBase)
       continue;
     Res->push_back(RVA + Rel.VirtualAddress);
@@ -186,8 +188,9 @@ bool SectionChunk::equals(const SectionChunk *X) const {
       return false;
     if (R1.VirtualAddress != R2.VirtualAddress)
       return false;
-    SymbolBody *B1 = File->getSymbolBody(R1.SymbolTableIndex);
-    SymbolBody *B2 = X->File->getSymbolBody(R2.SymbolTableIndex);
+    SymbolBody *B1 = File->getSymbolBody(R1.SymbolTableIndex)->getReplacement();
+    SymbolBody *B2 =
+        X->File->getSymbolBody(R2.SymbolTableIndex)->getReplacement();
     if (B1 == B2)
       return true;
     auto *D1 = dyn_cast<DefinedRegular>(B1);

lld/COFF/InputFiles.h

@@ -10,8 +10,6 @@
 #ifndef LLD_COFF_INPUT_FILES_H
 #define LLD_COFF_INPUT_FILES_H
 
-#include "Chunks.h"
-#include "Symbols.h"
 #include "lld/Core/LLVM.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/LTO/LTOModule.h"
@@ -28,6 +26,10 @@ namespace coff {
 using llvm::LTOModule;
 using llvm::object::Archive;
 using llvm::object::COFFObjectFile;
+using llvm::object::COFFSymbolRef;
+
+class Chunk;
+class SymbolBody;
 
 // The root class of input files.
 class InputFile {
@@ -102,7 +104,7 @@ public:
   // Returns a SymbolBody object for the SymbolIndex'th symbol in the
   // underlying object file.
   SymbolBody *getSymbolBody(uint32_t SymbolIndex) {
-    return SparseSymbolBodies[SymbolIndex]->getReplacement();
+    return SparseSymbolBodies[SymbolIndex];
   }
 
   // Returns the underying COFF file.

lld/COFF/SymbolTable.cpp

@@ -11,6 +11,7 @@
 #include "Driver.h"
 #include "Error.h"
 #include "SymbolTable.h"
+#include "Symbols.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/LTO/LTOCodeGenerator.h"
 #include "llvm/Support/Debug.h"

lld/COFF/SymbolTable.h

@@ -23,6 +23,12 @@ struct LTOCodeGenerator;
 namespace lld {
 namespace coff {
 
+class Chunk;
+class Defined;
+class Lazy;
+class SymbolBody;
+struct Symbol;
+
 // SymbolTable is a bucket of all known symbols, including defined,
 // undefined, or lazy symbols (the last one is symbols in archive
 // files whose archive members are not yet loaded).