MC: Remove MCSubtargetInfo::InitCPUSched()

[oota-llvm.git] / lib / MC / MCSymbol.cpp

diff --git a/lib/MC/MCSymbol.cpp b/lib/MC/MCSymbol.cpp
index 68ab24d9523a37b1cb0a7d959bb4b7923f86ebc0..125380a9d14066aea4508f4a35d8f37b9366512e 100644 (file)
--- a/lib/MC/MCSymbol.cpp
+++ b/lib/MC/MCSymbol.cpp
@@ -9,49 +9,70 @@
 
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCExpr.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
 using namespace llvm;
 
 // Sentinel value for the absolute pseudo section.
-const MCSection *MCSymbol::AbsolutePseudoSection =
-  reinterpret_cast<const MCSection *>(1);
-
-/// ShouldQuoteIdentifier - Return true if the identifier \arg Str needs quotes
-/// for this assembler.
-static bool ShouldQuoteIdentifier(const StringRef &Str, const MCAsmInfo &MAI) {
-  // If the assembler doesn't support quotes, never use them.
-  if (!MAI.doesAllowQuotesInName())
-    return false;
-  
-  // If empty, we need quotes.
-  if (Str.empty())
-    return true;
-  
-  // If the first character is a number, we need quotes.
-  if (Str[0] >= '0' && Str[0] <= '9')
-    return true;
-
-  // If any of the characters in the string is an unacceptable character, force
-  // quotes.
-  for (unsigned i = 0, e = Str.size(); i != e; ++i) {
-    char C = Str[i];
-  
-    if ((C < 'a' || C > 'z') &&
-        (C < 'A' || C > 'Z') &&
-        (C < '0' || C > '9') &&
-        C != '_' && C != '$' && C != '.')
-      return true;
-  }
-  return false;
+MCSection *MCSymbol::AbsolutePseudoSection = reinterpret_cast<MCSection *>(1);
+
+void *MCSymbol::operator new(size_t s, const StringMapEntry<bool> *Name,
+                             MCContext &Ctx) {
+  // We may need more space for a Name to account for alignment.  So allocate
+  // space for the storage type and not the name pointer.
+  size_t Size = s + (Name ? sizeof(NameEntryStorageTy) : 0);
+
+  // For safety, ensure that the alignment of a pointer is enough for an
+  // MCSymbol.  This also ensures we don't need padding between the name and
+  // symbol.
+  static_assert((unsigned)AlignOf<MCSymbol>::Alignment <=
+                AlignOf<NameEntryStorageTy>::Alignment,
+                "Bad alignment of MCSymbol");
+  void *Storage = Ctx.allocate(Size, alignOf<NameEntryStorageTy>());
+  NameEntryStorageTy *Start = static_cast<NameEntryStorageTy*>(Storage);
+  NameEntryStorageTy *End = Start + (Name ? 1 : 0);
+  return End;
 }
 
-void MCSymbol::print(raw_ostream &OS, const MCAsmInfo *MAI) const {
-  if (!MAI || ShouldQuoteIdentifier(getName(), *MAI))
-    OS << '"' << getName() << '"';
-  else
-    OS << getName();
+void MCSymbol::setVariableValue(const MCExpr *Value) {
+  assert(!IsUsed && "Cannot set a variable that has already been used.");
+  assert(Value && "Invalid variable value!");
+  assert((SymbolContents == SymContentsUnset ||
+          SymbolContents == SymContentsVariable) &&
+         "Cannot give common/offset symbol a variable value");
+  this->Value = Value;
+  SymbolContents = SymContentsVariable;
+  setUndefined();
 }
 
-void MCSymbol::dump() const {
-  print(errs(), 0);
+void MCSymbol::print(raw_ostream &OS, const MCAsmInfo *MAI) const {
+  // The name for this MCSymbol is required to be a valid target name.  However,
+  // some targets support quoting names with funny characters.  If the name
+  // contains a funny character, then print it quoted.
+  StringRef Name = getName();
+  if (!MAI || MAI->isValidUnquotedName(Name)) {
+    OS << Name;
+    return;
+  }
+
+  if (MAI && !MAI->supportsNameQuoting())
+    report_fatal_error("Symbol name with unsupported characters");
+
+  OS << '"';
+  for (char C : Name) {
+    if (C == '\n')
+      OS << "\\n";
+    else if (C == '"')
+      OS << "\\\"";
+    else
+      OS << C;
+  }
+  OS << '"';
 }
+
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+void MCSymbol::dump() const { dbgs() << *this; }
+#endif