asmstreamerize the .size directive for function bodies, force clients

of printOffset to pass in a stream to print to.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100296 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/AsmPrinter.h

@@ -269,11 +269,6 @@ namespace llvm {
     ///
     void EmitInt32(int Value) const;
 
-    /// EmitInt64 - Emit a long long directive and value.
-    ///
-    void EmitInt64(uint64_t Value) const;
-
-
     /// EmitLabelDifference - Emit something like ".long Hi-Lo" where the size
     /// in bytes of the directive is specified by Size and Hi/Lo specify the
     /// labels.  This implicitly uses .set if it is available.
@@ -349,7 +344,7 @@ namespace llvm {
     virtual void EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV);
 
     /// printOffset - This is just convenient handler for printing offsets.
-    void printOffset(int64_t Offset) const;
+    void printOffset(int64_t Offset, raw_ostream &OS) const;
 
     /// isBlockOnlyReachableByFallthough - Return true if the basic block has
     /// exactly one predecessor and the control transfer mechanism between

lib/CodeGen/AsmPrinter/AsmPrinter.cpp

@@ -461,7 +461,16 @@ void AsmPrinter::EmitFunctionBody() {
   // If the target wants a .size directive for the size of the function, emit
   // it.
   if (MAI->hasDotTypeDotSizeDirective()) {
-    O << "\t.size\t" << *CurrentFnSym << ", .-" << *CurrentFnSym << '\n';
+    // Create a symbol for the end of function, so we can get the size as
+    // difference between the function label and the temp label.
+    MCSymbol *FnEndLabel = OutContext.CreateTempSymbol();
+    OutStreamer.EmitLabel(FnEndLabel);
+
+    const MCExpr *SizeExp =
+      MCBinaryExpr::CreateSub(MCSymbolRefExpr::Create(FnEndLabel, OutContext),
+                              MCSymbolRefExpr::Create(CurrentFnSym, OutContext),
+                              OutContext);
+    OutStreamer.EmitELFSize(CurrentFnSym, SizeExp);
   }
 
   // Emit post-function debug information.
@@ -922,12 +931,6 @@ void AsmPrinter::EmitInt32(int Value) const {
   OutStreamer.EmitIntValue(Value, 4, 0/*addrspace*/);
 }
 
-/// EmitInt64 - Emit a long long directive and value.
-///
-void AsmPrinter::EmitInt64(uint64_t Value) const {
-  OutStreamer.EmitIntValue(Value, 8, 0/*addrspace*/);
-}
-
 /// EmitLabelDifference - Emit something like ".long Hi-Lo" where the size
 /// in bytes of the directive is specified by Size and Hi/Lo specify the
 /// labels.  This implicitly uses .set if it is available.
@@ -1822,11 +1825,11 @@ void AsmPrinter::EmitVisibility(MCSymbol *Sym, unsigned Visibility) const {
     OutStreamer.EmitSymbolAttribute(Sym, Attr);
 }
 
-void AsmPrinter::printOffset(int64_t Offset) const {
+void AsmPrinter::printOffset(int64_t Offset, raw_ostream &OS) const {
   if (Offset > 0)
-    O << '+' << Offset;
+    OS << '+' << Offset;
   else if (Offset < 0)
-    O << Offset;
+    OS << Offset;
 }
 
 /// isBlockOnlyReachableByFallthough - Return true if the basic block has

lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp

@@ -319,7 +319,7 @@ void ARMAsmPrinter::printOperand(const MachineInstr *MI, int OpNum,
       O << ":upper16:";
     O << *Mang->getSymbol(GV);
 
-    printOffset(MO.getOffset());
+    printOffset(MO.getOffset(), O);
 
     if (isCallOp && Subtarget->isTargetELF() &&
         TM.getRelocationModel() == Reloc::PIC_)

lib/Target/Blackfin/AsmPrinter/BlackfinAsmPrinter.cpp

@@ -86,7 +86,7 @@ void BlackfinAsmPrinter::printOperand(const MachineInstr *MI, int opNum) {
     return;
   case MachineOperand::MO_GlobalAddress:
     O << *Mang->getSymbol(MO.getGlobal());
-    printOffset(MO.getOffset());
+    printOffset(MO.getOffset(), O);
     break;
   case MachineOperand::MO_ExternalSymbol:
     O << *GetExternalSymbolSymbol(MO.getSymbolName());

lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp

@@ -446,7 +446,7 @@ void PPCAsmPrinter::printOp(const MachineOperand &MO) {
 
     O << *SymToPrint;
 
-    printOffset(MO.getOffset());
+    printOffset(MO.getOffset(), O);
     return;
   }
 

lib/Target/SystemZ/AsmPrinter/SystemZAsmPrinter.cpp

@@ -101,7 +101,7 @@ void SystemZAsmPrinter::printPCRelImmOperand(const MachineInstr *MI, int OpNum){
         !GV->hasLocalLinkage())
       O << "@PLT";
 
-    printOffset(MO.getOffset());
+    printOffset(MO.getOffset(), O);
     return;
   }
   case MachineOperand::MO_ExternalSymbol: {
@@ -155,7 +155,7 @@ void SystemZAsmPrinter::printOperand(const MachineInstr *MI, int OpNum,
     O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << '_'
       << MO.getIndex();
 
-    printOffset(MO.getOffset());
+    printOffset(MO.getOffset(), O);
     break;
   case MachineOperand::MO_GlobalAddress:
     O << *Mang->getSymbol(MO.getGlobal());
@@ -177,7 +177,7 @@ void SystemZAsmPrinter::printOperand(const MachineInstr *MI, int OpNum,
   case SystemZII::MO_PLT:       O << "@PLT";       break;
   }
 
-  printOffset(MO.getOffset());
+  printOffset(MO.getOffset(), O);
 }
 
 void SystemZAsmPrinter::printRIAddrOperand(const MachineInstr *MI, int OpNum,

lib/Target/X86/AsmPrinter/X86AsmPrinter.cpp

@@ -87,7 +87,7 @@ void X86AsmPrinter::printSymbolOperand(const MachineOperand &MO) {
     break;
   case MachineOperand::MO_ConstantPoolIndex:
     O << *GetCPISymbol(MO.getIndex());
-    printOffset(MO.getOffset());
+    printOffset(MO.getOffset(), O);
     break;
   case MachineOperand::MO_GlobalAddress: {
     const GlobalValue *GV = MO.getGlobal();
@@ -136,7 +136,7 @@ void X86AsmPrinter::printSymbolOperand(const MachineOperand &MO) {
       O << *GVSym;
     else
       O << '(' << *GVSym << ')';
-    printOffset(MO.getOffset());
+    printOffset(MO.getOffset(), O);
     break;
   }
   case MachineOperand::MO_ExternalSymbol: {