split inline asm support out to its own .cpp file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100340 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 294 deletions

diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 2f80e80f4d..33f4efcea2 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -13,9 +13,6 @@
 
 #define DEBUG_TYPE "asm-printer"
 #include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/Assembly/Writer.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/Constants.h"
 #include "llvm/Module.h"
 #include "llvm/CodeGen/DwarfWriter.h"
 #include "llvm/CodeGen/GCMetadataPrinter.h"
@@ -27,13 +24,13 @@
 #include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/Analysis/ConstantFolding.h"
 #include "llvm/Analysis/DebugInfo.h"
+#include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCExpr.h"
 #include "llvm/MC/MCInst.h"
 #include "llvm/MC/MCSection.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSymbol.h"
-#include "llvm/MC/MCAsmInfo.h"
 #include "llvm/Target/Mangler.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetInstrInfo.h"
@@ -41,14 +38,10 @@
 #include "llvm/Target/TargetLoweringObjectFile.h"
 #include "llvm/Target/TargetOptions.h"
 #include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/Statistic.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/Format.h"
-#include <cerrno>
 using namespace llvm;
 
 STATISTIC(EmittedInsts, "Number of machine instrs printed");
@@ -908,22 +901,6 @@ void AsmPrinter::EmitXXStructorList(Constant *List) {
     }
 }
 
-/// EmitInlineAsm - Emit a blob of inline asm to the output streamer.
-void AsmPrinter::EmitInlineAsm(StringRef Str) const {
-  assert(!Str.empty() && "Can't emit empty inline asm block");
-  
-  // If the output streamer is actually a .s file, just emit the blob textually.
-  // This is useful in case the asm parser doesn't handle something but the
-  // system assembler does.
-  if (OutStreamer.hasRawTextSupport()) {
-    OutStreamer.EmitRawText(Str);
-    return;
-  }
-  
-  errs() << "Inline asm not supported by this streamer!\n";
-}
-
-
 //===--------------------------------------------------------------------===//
 // Emission and print routines
 //
@@ -1346,259 +1323,6 @@ void AsmPrinter::printOffset(int64_t Offset, raw_ostream &OS) const {
     OS << Offset;
 }
 
-/// PrintSpecial - Print information related to the specified machine instr
-/// that is independent of the operand, and may be independent of the instr
-/// itself.  This can be useful for portably encoding the comment character
-/// or other bits of target-specific knowledge into the asmstrings.  The
-/// syntax used is ${:comment}.  Targets can override this to add support
-/// for their own strange codes.
-void AsmPrinter::PrintSpecial(const MachineInstr *MI, raw_ostream &OS,
-                              const char *Code) const {
-  if (!strcmp(Code, "private")) {
-    OS << MAI->getPrivateGlobalPrefix();
-  } else if (!strcmp(Code, "comment")) {
-    OS << MAI->getCommentString();
-  } else if (!strcmp(Code, "uid")) {
-    // Comparing the address of MI isn't sufficient, because machineinstrs may
-    // be allocated to the same address across functions.
-    const Function *ThisF = MI->getParent()->getParent()->getFunction();
-    
-    // If this is a new LastFn instruction, bump the counter.
-    if (LastMI != MI || LastFn != ThisF) {
-      ++Counter;
-      LastMI = MI;
-      LastFn = ThisF;
-    }
-    OS << Counter;
-  } else {
-    std::string msg;
-    raw_string_ostream Msg(msg);
-    Msg << "Unknown special formatter '" << Code
-         << "' for machine instr: " << *MI;
-    llvm_report_error(Msg.str());
-  }    
-}
-
-/// EmitInlineAsm - This method formats and emits the specified machine
-/// instruction that is an inline asm.
-void AsmPrinter::EmitInlineAsm(const MachineInstr *MI) const {
-  assert(MI->isInlineAsm() && "printInlineAsm only works on inline asms");
-  
-  unsigned NumOperands = MI->getNumOperands();
-  
-  // Count the number of register definitions to find the asm string.
-  unsigned NumDefs = 0;
-  for (; MI->getOperand(NumDefs).isReg() && MI->getOperand(NumDefs).isDef();
-       ++NumDefs)
-    assert(NumDefs != NumOperands-1 && "No asm string?");
-  
-  assert(MI->getOperand(NumDefs).isSymbol() && "No asm string?");
-
-  // Disassemble the AsmStr, printing out the literal pieces, the operands, etc.
-  const char *AsmStr = MI->getOperand(NumDefs).getSymbolName();
-
-  // If this asmstr is empty, just print the #APP/#NOAPP markers.
-  // These are useful to see where empty asm's wound up.
-  if (AsmStr[0] == 0) {
-    if (!OutStreamer.hasRawTextSupport()) return;
-
-    OutStreamer.EmitRawText(Twine("\t")+MAI->getCommentString()+
-                            MAI->getInlineAsmStart());
-    OutStreamer.EmitRawText(Twine("\t")+MAI->getCommentString()+
-                            MAI->getInlineAsmEnd());
-    return;
-  }
-
-  // Emit the #APP start marker.  This has to happen even if verbose-asm isn't
-  // enabled, so we use EmitRawText.
-  if (OutStreamer.hasRawTextSupport())
-    OutStreamer.EmitRawText(Twine("\t")+MAI->getCommentString()+
-                            MAI->getInlineAsmStart());
-
-  // Emit the inline asm to a temporary string so we can emit it through
-  // EmitInlineAsm.
-  SmallString<256> StringData;
-  raw_svector_ostream OS(StringData);
-  
-  OS << '\t';
-
-  // The variant of the current asmprinter.
-  int AsmPrinterVariant = MAI->getAssemblerDialect();
-
-  int CurVariant = -1;            // The number of the {.|.|.} region we are in.
-  const char *LastEmitted = AsmStr; // One past the last character emitted.
-  
-  while (*LastEmitted) {
-    switch (*LastEmitted) {
-    default: {
-      // Not a special case, emit the string section literally.
-      const char *LiteralEnd = LastEmitted+1;
-      while (*LiteralEnd && *LiteralEnd != '{' && *LiteralEnd != '|' &&
-             *LiteralEnd != '}' && *LiteralEnd != '$' && *LiteralEnd != '\n')
-        ++LiteralEnd;
-      if (CurVariant == -1 || CurVariant == AsmPrinterVariant)
-        OS.write(LastEmitted, LiteralEnd-LastEmitted);
-      LastEmitted = LiteralEnd;
-      break;
-    }
-    case '\n':
-      ++LastEmitted;   // Consume newline character.
-      OS << '\n';       // Indent code with newline.
-      break;
-    case '$': {
-      ++LastEmitted;   // Consume '$' character.
-      bool Done = true;
-
-      // Handle escapes.
-      switch (*LastEmitted) {
-      default: Done = false; break;
-      case '$':     // $$ -> $
-        if (CurVariant == -1 || CurVariant == AsmPrinterVariant)
-          OS << '$';
-        ++LastEmitted;  // Consume second '$' character.
-        break;
-      case '(':             // $( -> same as GCC's { character.
-        ++LastEmitted;      // Consume '(' character.
-        if (CurVariant != -1) {
-          llvm_report_error("Nested variants found in inline asm string: '"
-                            + std::string(AsmStr) + "'");
-        }
-        CurVariant = 0;     // We're in the first variant now.
-        break;
-      case '|':
-        ++LastEmitted;  // consume '|' character.
-        if (CurVariant == -1)
-          OS << '|';       // this is gcc's behavior for | outside a variant
-        else
-          ++CurVariant;   // We're in the next variant.
-        break;
-      case ')':         // $) -> same as GCC's } char.
-        ++LastEmitted;  // consume ')' character.
-        if (CurVariant == -1)
-          OS << '}';     // this is gcc's behavior for } outside a variant
-        else 
-          CurVariant = -1;
-        break;
-      }
-      if (Done) break;
-      
-      bool HasCurlyBraces = false;
-      if (*LastEmitted == '{') {     // ${variable}
-        ++LastEmitted;               // Consume '{' character.
-        HasCurlyBraces = true;
-      }
-      
-      // If we have ${:foo}, then this is not a real operand reference, it is a
-      // "magic" string reference, just like in .td files.  Arrange to call
-      // PrintSpecial.
-      if (HasCurlyBraces && *LastEmitted == ':') {
-        ++LastEmitted;
-        const char *StrStart = LastEmitted;
-        const char *StrEnd = strchr(StrStart, '}');
-        if (StrEnd == 0)
-          llvm_report_error(Twine("Unterminated ${:foo} operand in inline asm"
-                                  " string: '") + Twine(AsmStr) + "'");
-        
-        std::string Val(StrStart, StrEnd);
-        PrintSpecial(MI, OS, Val.c_str());
-        LastEmitted = StrEnd+1;
-        break;
-      }
-            
-      const char *IDStart = LastEmitted;
-      char *IDEnd;
-      errno = 0;
-      long Val = strtol(IDStart, &IDEnd, 10); // We only accept numbers for IDs.
-      if (!isdigit(*IDStart) || (Val == 0 && errno == EINVAL)) {
-        llvm_report_error("Bad $ operand number in inline asm string: '" 
-                          + std::string(AsmStr) + "'");
-      }
-      LastEmitted = IDEnd;
-      
-      char Modifier[2] = { 0, 0 };
-      
-      if (HasCurlyBraces) {
-        // If we have curly braces, check for a modifier character.  This
-        // supports syntax like ${0:u}, which correspond to "%u0" in GCC asm.
-        if (*LastEmitted == ':') {
-          ++LastEmitted;    // Consume ':' character.
-          if (*LastEmitted == 0) {
-            llvm_report_error("Bad ${:} expression in inline asm string: '" 
-                              + std::string(AsmStr) + "'");
-          }
-          
-          Modifier[0] = *LastEmitted;
-          ++LastEmitted;    // Consume modifier character.
-        }
-        
-        if (*LastEmitted != '}') {
-          llvm_report_error("Bad ${} expression in inline asm string: '" 
-                            + std::string(AsmStr) + "'");
-        }
-        ++LastEmitted;    // Consume '}' character.
-      }
-      
-      if ((unsigned)Val >= NumOperands-1) {
-        llvm_report_error("Invalid $ operand number in inline asm string: '" 
-                          + std::string(AsmStr) + "'");
-      }
-      
-      // Okay, we finally have a value number.  Ask the target to print this
-      // operand!
-      if (CurVariant == -1 || CurVariant == AsmPrinterVariant) {
-        unsigned OpNo = 1;
-
-        bool Error = false;
-
-        // Scan to find the machine operand number for the operand.
-        for (; Val; --Val) {
-          if (OpNo >= MI->getNumOperands()) break;
-          unsigned OpFlags = MI->getOperand(OpNo).getImm();
-          OpNo += InlineAsm::getNumOperandRegisters(OpFlags) + 1;
-        }
-
-        if (OpNo >= MI->getNumOperands()) {
-          Error = true;
-        } else {
-          unsigned OpFlags = MI->getOperand(OpNo).getImm();
-          ++OpNo;  // Skip over the ID number.
-
-          if (Modifier[0] == 'l')  // labels are target independent
-            OS << *MI->getOperand(OpNo).getMBB()->getSymbol();
-          else {
-            AsmPrinter *AP = const_cast<AsmPrinter*>(this);
-            if ((OpFlags & 7) == 4) {
-              Error = AP->PrintAsmMemoryOperand(MI, OpNo, AsmPrinterVariant,
-                                                Modifier[0] ? Modifier : 0,
-                                                OS);
-            } else {
-              Error = AP->PrintAsmOperand(MI, OpNo, AsmPrinterVariant,
-                                          Modifier[0] ? Modifier : 0, OS);
-            }
-          }
-        }
-        if (Error) {
-          std::string msg;
-          raw_string_ostream Msg(msg);
-          Msg << "Invalid operand found in inline asm: '" << AsmStr << "'\n";
-          MI->print(Msg);
-          llvm_report_error(Msg.str());
-        }
-      }
-      break;
-    }
-    }
-  }
-  OS << "\n";
-  
-  EmitInlineAsm(OS.str());
-  
-  // Emit the #NOAPP end marker.  This has to happen even if verbose-asm isn't
-  // enabled, so we use EmitRawText.
-  if (OutStreamer.hasRawTextSupport())
-    OutStreamer.EmitRawText(Twine("\t")+MAI->getCommentString()+
-                            MAI->getInlineAsmEnd());
-}
 
 /// EmitImplicitDef - This method emits the specified machine instruction
 /// that is an implicit def.
@@ -1625,23 +1349,6 @@ void AsmPrinter::EmitKill(const MachineInstr *MI) const {
   OutStreamer.AddBlankLine();
 }
 
-/// PrintAsmOperand - Print the specified operand of MI, an INLINEASM
-/// instruction, using the specified assembler variant.  Targets should
-/// override this to format as appropriate.
-bool AsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
-                                 unsigned AsmVariant, const char *ExtraCode,
-                                 raw_ostream &O) {
-  // Target doesn't support this yet!
-  return true;
-}
-
-bool AsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
-                                       unsigned AsmVariant,
-                                       const char *ExtraCode, raw_ostream &O) {
-  // Target doesn't support this yet!
-  return true;
-}
-
 MCSymbol *AsmPrinter::GetBlockAddressSymbol(const BlockAddress *BA) const {
   return MMI->getAddrLabelSymbol(BA->getBasicBlock());
 }