Rename VMCore directory to IR.

Aside from moving the actual files, this patch only updates the build
system and the source file comments under lib/... that are relevant.

I'll be updating other docs and other files in smaller subsequnet
commits.

While I've tried to test this, but it is entirely possible that there
will still be some build system fallout.

Also, note that I've not changed the library name itself: libLLVMCore.a
is still the library name. I'd be interested in others' opinions about
whether we should rename this as well (I think we should, just not sure
what it might break)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171359 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 117 insertions, 0 deletions

diff --git a/lib/IR/ValueSymbolTable.cpp b/lib/IR/ValueSymbolTable.cpp
new file mode 100644
index 0000000000..ea203bcc79
--- /dev/null
+++ b/lib/IR/ValueSymbolTable.cpp
@@ -0,0 +1,117 @@
+//===-- ValueSymbolTable.cpp - Implement the ValueSymbolTable class -------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the ValueSymbolTable class for the IR library.
+//
+//===----------------------------------------------------------------------===//
+
+#define DEBUG_TYPE "valuesymtab"
+#include "llvm/ValueSymbolTable.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/GlobalValue.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Type.h"
+using namespace llvm;
+
+// Class destructor
+ValueSymbolTable::~ValueSymbolTable() {
+#ifndef NDEBUG   // Only do this in -g mode...
+  for (iterator VI = vmap.begin(), VE = vmap.end(); VI != VE; ++VI)
+    dbgs() << "Value still in symbol table! Type = '"
+           << *VI->getValue()->getType() << "' Name = '"
+           << VI->getKeyData() << "'\n";
+  assert(vmap.empty() && "Values remain in symbol table!");
+#endif
+}
+
+// Insert a value into the symbol table with the specified name...
+//
+void ValueSymbolTable::reinsertValue(Value* V) {
+  assert(V->hasName() && "Can't insert nameless Value into symbol table");
+
+  // Try inserting the name, assuming it won't conflict.
+  if (vmap.insert(V->Name)) {
+    //DEBUG(dbgs() << " Inserted value: " << V->Name << ": " << *V << "\n");
+    return;
+  }
+  
+  // Otherwise, there is a naming conflict.  Rename this value.
+  SmallString<256> UniqueName(V->getName().begin(), V->getName().end());
+
+  // The name is too already used, just free it so we can allocate a new name.
+  V->Name->Destroy();
+  
+  unsigned BaseSize = UniqueName.size();
+  while (1) {
+    // Trim any suffix off and append the next number.
+    UniqueName.resize(BaseSize);
+    raw_svector_ostream(UniqueName) << ++LastUnique;
+
+    // Try insert the vmap entry with this suffix.
+    ValueName &NewName = vmap.GetOrCreateValue(UniqueName);
+    if (NewName.getValue() == 0) {
+      // Newly inserted name.  Success!
+      NewName.setValue(V);
+      V->Name = &NewName;
+     //DEBUG(dbgs() << " Inserted value: " << UniqueName << ": " << *V << "\n");
+      return;
+    }
+  }
+}
+
+void ValueSymbolTable::removeValueName(ValueName *V) {
+  //DEBUG(dbgs() << " Removing Value: " << V->getKeyData() << "\n");
+  // Remove the value from the symbol table.
+  vmap.remove(V);
+}
+
+/// createValueName - This method attempts to create a value name and insert
+/// it into the symbol table with the specified name.  If it conflicts, it
+/// auto-renames the name and returns that instead.
+ValueName *ValueSymbolTable::createValueName(StringRef Name, Value *V) {
+  // In the common case, the name is not already in the symbol table.
+  ValueName &Entry = vmap.GetOrCreateValue(Name);
+  if (Entry.getValue() == 0) {
+    Entry.setValue(V);
+    //DEBUG(dbgs() << " Inserted value: " << Entry.getKeyData() << ": "
+    //           << *V << "\n");
+    return &Entry;
+  }
+  
+  // Otherwise, there is a naming conflict.  Rename this value.
+  SmallString<256> UniqueName(Name.begin(), Name.end());
+  
+  while (1) {
+    // Trim any suffix off and append the next number.
+    UniqueName.resize(Name.size());
+    raw_svector_ostream(UniqueName) << ++LastUnique;
+    
+    // Try insert the vmap entry with this suffix.
+    ValueName &NewName = vmap.GetOrCreateValue(UniqueName);
+    if (NewName.getValue() == 0) {
+      // Newly inserted name.  Success!
+      NewName.setValue(V);
+     //DEBUG(dbgs() << " Inserted value: " << UniqueName << ": " << *V << "\n");
+      return &NewName;
+    }
+  }
+}
+
+
+// dump - print out the symbol table
+//
+void ValueSymbolTable::dump() const {
+  //DEBUG(dbgs() << "ValueSymbolTable:\n");
+  for (const_iterator I = begin(), E = end(); I != E; ++I) {
+    //DEBUG(dbgs() << "  '" << I->getKeyData() << "' = ");
+    I->getValue()->dump();
+    //DEBUG(dbgs() << "\n");
+  }
+}