Use the shared asmprinter code for printing special llvm globals

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24695 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/PowerPC/PPCAsmPrinter.cpp

@@ -198,14 +198,14 @@ namespace {
       AlignmentIsInBytes = false;    // Alignment is by power of 2.
       ConstantPoolSection = "\t.const\t";
       LCOMMDirective = "\t.lcomm\t";
+      StaticCtorsSection = ".mod_init_func";
+      StaticDtorsSection = ".mod_term_func";
     }
 
     virtual const char *getPassName() const {
       return "Darwin PPC Assembly Printer";
     }
     
-    void EmitXXStructorList(Constant *List);
-
     bool runOnMachineFunction(MachineFunction &F);
     bool doInitialization(Module &M);
     bool doFinalization(Module &M);
@@ -415,21 +415,6 @@ bool DarwinAsmPrinter::doInitialization(Module &M) {
   return false;
 }
 
-/// EmitXXStructorList - Emit the ctor or dtor list.  On darwin, this just 
-/// prints out the function pointers.
-void DarwinAsmPrinter::EmitXXStructorList(Constant *List) {
-  // Should be an array of '{ int, void ()* }' structs.  The first value is the
-  // init priority, which we ignore.
-  if (!isa<ConstantArray>(List)) return;
-  ConstantArray *InitList = cast<ConstantArray>(List);
-  for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
-    if (ConstantStruct *CS = dyn_cast<ConstantStruct>(InitList->getOperand(i))){
-      if (CS->getNumOperands() != 2) return;  // Not array of 2-element structs.
-      // Emit the function pointer.
-      EmitGlobalConstant(CS->getOperand(1));
-    }
-}
-
 bool DarwinAsmPrinter::doFinalization(Module &M) {
   const TargetData &TD = TM.getTargetData();
 
@@ -438,22 +423,9 @@ bool DarwinAsmPrinter::doFinalization(Module &M) {
        I != E; ++I) {
     if (!I->hasInitializer()) continue;   // External global require no code
     
-    // Check to see if this is a special global used by LLVM.
+    // Check to see if this is a special global used by LLVM, if so, emit it.
-    if (I->hasAppendingLinkage()) {
+    if (I->hasAppendingLinkage() && EmitSpecialLLVMGlobal(I))
-      if (I->getName() == "llvm.used")
+      continue;
-        continue;  // No need to emit this at all.
-      if (I->getName() == "llvm.global_ctors") {
-        SwitchSection(".mod_init_func", 0);
-        EmitAlignment(2, 0);
-        EmitXXStructorList(I->getInitializer());
-        continue;
-      } else if (I->getName() == "llvm.global_dtors") {
-        SwitchSection(".mod_term_func", 0);
-        EmitAlignment(2, 0);
-        EmitXXStructorList(I->getInitializer());
-        continue;
-      }
-    }
     
     O << '\n';
     std::string name = Mang->getValueName(I);

lib/Target/X86/X86AsmPrinter.cpp

@@ -58,6 +58,8 @@ bool X86SharedAsmPrinter::doInitialization(Module &M) {
     COMMDirectiveTakesAlignment = false;
     HasDotTypeDotSizeDirective = false;
     forDarwin = true;
+    StaticCtorsSection = ".mod_init_func";
+    StaticDtorsSection = ".mod_term_func";
     break;
   case X86Subtarget::isCygwin:
     GlobalPrefix = "_";
@@ -74,21 +76,6 @@ bool X86SharedAsmPrinter::doInitialization(Module &M) {
   return AsmPrinter::doInitialization(M);
 }
 
-/// EmitXXStructorList - Emit the ctor or dtor list.  On darwin, this just 
-/// prints out the function pointers.
-void X86SharedAsmPrinter::EmitXXStructorList(Constant *List) {
-  // Should be an array of '{ int, void ()* }' structs.  The first value is the
-  // init priority, which we ignore.
-  if (!isa<ConstantArray>(List)) return;
-  ConstantArray *InitList = cast<ConstantArray>(List);
-  for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
-    if (ConstantStruct *CS = dyn_cast<ConstantStruct>(InitList->getOperand(i))){
-      if (CS->getNumOperands() != 2) return;  // Not array of 2-element structs.
-                                              // Emit the function pointer.
-      EmitGlobalConstant(CS->getOperand(1));
-    }
-}
-
 bool X86SharedAsmPrinter::doFinalization(Module &M) {
   const TargetData &TD = TM.getTargetData();
 
@@ -97,28 +84,9 @@ bool X86SharedAsmPrinter::doFinalization(Module &M) {
        E = M.global_end(); I != E; ++I) {
     if (!I->hasInitializer()) continue;   // External global require no code
     
-    // Check to see if this is a special global used by LLVM.
+    // Check to see if this is a special global used by LLVM, if so, emit it.
-    if (I->hasAppendingLinkage()) {
+    if (I->hasAppendingLinkage() && EmitSpecialLLVMGlobal(I))
-      if (I->getName() == "llvm.used")
+      continue;
-        continue;  // No need to emit this at all.
-      if (I->getName() == "llvm.global_ctors") {
-        if (forDarwin)
-          SwitchSection(".mod_init_func", 0);
-        else
-          SwitchSection(".ctors,\"aw\",@progbits", 0);
-        EmitAlignment(2, 0);
-        EmitXXStructorList(I->getInitializer());
-        continue;
-      } else if (I->getName() == "llvm.global_dtors") {
-        if (forDarwin)
-          SwitchSection(".mod_term_func", 0);
-        else
-          SwitchSection(".dtors,\"aw\",@progbits", 0);
-        EmitAlignment(2, 0);
-        EmitXXStructorList(I->getInitializer());
-        continue;
-      }
-    }
     
     O << "\n\n";
     std::string name = Mang->getValueName(I);

lib/Target/X86/X86AsmPrinter.h

@@ -33,7 +33,6 @@ struct X86SharedAsmPrinter : public AsmPrinter {
 
   bool doInitialization(Module &M);
   bool doFinalization(Module &M);
-  void EmitXXStructorList(Constant *List);
 
   bool forDarwin;  // FIXME: eliminate.