//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "llvm/Support/Mangler.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
using namespace llvm;
std::string Result;
if (X.empty()) return X; // Empty names are uniqued by the caller.
+ // If PreserveAsmNames is set, names with asm identifiers are not modified.
+ if (PreserveAsmNames && X[0] == 1)
+ return X;
+
if (!UseQuotes) {
// If X does not start with (char)1, add the prefix.
std::string::const_iterator I = X.begin();
} else {
bool NeedsQuotes = false;
- // If X does not start with (char)1, add the prefix.
std::string::const_iterator I = X.begin();
- if (*I != 1)
- Result = Prefix;
- else
+ if (*I == 1)
++I; // Skip over the marker.
-
+
// If the first character is a number, we need quotes.
if (*I >= '0' && *I <= '9')
NeedsQuotes = true;
- for (std::string::const_iterator E = X.end(); I != E; ++I)
+ // Do an initial scan of the string, checking to see if we need quotes or
+ // to escape a '"' or not.
+ if (!NeedsQuotes)
+ for (std::string::const_iterator E = X.end(); I != E; ++I)
+ if (!isCharAcceptable(*I)) {
+ NeedsQuotes = true;
+ break;
+ }
+
+ // In the common case, we don't need quotes. Handle this quickly.
+ if (!NeedsQuotes) {
+ if (*X.begin() != 1)
+ return Prefix+X;
+ else
+ return X.substr(1);
+ }
+
+ // Otherwise, construct the string the expensive way.
+ I = X.begin();
+
+ // If X does not start with (char)1, add the prefix.
+ if (*I != 1)
+ Result = Prefix;
+ else
+ ++I; // Skip the marker if present.
+
+ for (std::string::const_iterator E = X.end(); I != E; ++I) {
if (*I == '"')
Result += "_QQ_";
- else {
- if (!isCharAcceptable(*I))
- NeedsQuotes = true;
+ else if (*I == '\n')
+ Result += "_NL_";
+ else
Result += *I;
- }
- if (NeedsQuotes)
- Result = '"' + Result + '"';
+ }
+ Result = '"' + Result + '"';
}
return Result;
}
}
-std::string Mangler::getValueName(const GlobalValue *GV) {
+std::string Mangler::getValueName(const GlobalValue *GV, const char * Suffix) {
// Check to see whether we've already named V.
std::string &Name = Memo[GV];
if (!Name.empty())
// Name mangling occurs as follows:
// - If V is an intrinsic function, do not change name at all
// - Otherwise, mangling occurs if global collides with existing name.
- if (isa<Function>(GV) && cast<Function>(GV)->getIntrinsicID()) {
+ if (isa<Function>(GV) && cast<Function>(GV)->isIntrinsic()) {
Name = GV->getName(); // Is an intrinsic function
+ } else if (!GV->hasName()) {
+ // Must mangle the global into a unique ID.
+ unsigned TypeUniqueID = getTypeID(GV->getType());
+ static unsigned GlobalID = 0;
+ Name = "__unnamed_" + utostr(TypeUniqueID) + "_" + utostr(GlobalID++);
} else if (!MangledGlobals.count(GV)) {
- Name = makeNameProper(GV->getName(), Prefix);
+ Name = makeNameProper(GV->getName() + Suffix, Prefix);
} else {
unsigned TypeUniqueID = getTypeID(GV->getType());
Name = "l" + utostr(TypeUniqueID) + "_" + makeNameProper(GV->getName());
void Mangler::InsertName(GlobalValue *GV,
std::map<std::string, GlobalValue*> &Names) {
- if (!GV->hasName()) { // We must mangle unnamed globals.
- MangledGlobals.insert(GV);
+ if (!GV->hasName()) // We must mangle unnamed globals.
return;
- }
// Figure out if this is already used.
GlobalValue *&ExistingValue = Names[GV->getName()];
ExistingValue = GV;
} else {
// If GV is external but the existing one is static, mangle the existing one
- if (GV->hasExternalLinkage() && !ExistingValue->hasExternalLinkage()) {
+ if ((GV->hasExternalLinkage() || GV->hasDLLImportLinkage()) &&
+ !(ExistingValue->hasExternalLinkage() || ExistingValue->hasDLLImportLinkage())) {
MangledGlobals.insert(ExistingValue);
ExistingValue = GV;
+ } else if ((GV->hasExternalLinkage() ||
+ GV->hasDLLImportLinkage()) &&
+ (ExistingValue->hasExternalLinkage() ||
+ ExistingValue->hasDLLImportLinkage()) &&
+ GV->isDeclaration() &&
+ ExistingValue->isDeclaration()) {
+ // If the two globals both have external inkage, and are both external,
+ // don't mangle either of them, we just have some silly type mismatch.
} else {
// Otherwise, mangle GV
MangledGlobals.insert(GV);
Mangler::Mangler(Module &M, const char *prefix)
- : Prefix(prefix), UseQuotes(false), Count(0), TypeCounter(0) {
- std::fill(AcceptableChars,
- AcceptableChars+sizeof(AcceptableChars)/sizeof(AcceptableChars[0]),
- 0);
+ : Prefix(prefix), UseQuotes(false), PreserveAsmNames(false),
+ Count(0), TypeCounter(0) {
+ std::fill(AcceptableChars, array_endof(AcceptableChars), 0);
// Letters and numbers are acceptable.
for (unsigned char X = 'a'; X <= 'z'; ++X)
for (Module::global_iterator I = M.global_begin(), E = M.global_end(); I != E; ++I)
InsertName(I, Names);
}
+
+// Cause this file to be linked in when Support/Mangler.h is #included
+DEFINING_FILE_FOR(Mangler)
projects / oota-llvm.git / blobdiff