//
// 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/System/Atomic.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/StringMap.h"
using namespace llvm;
static char HexDigit(int V) {
/// makeNameProper - We don't want identifier names non-C-identifier characters
/// in them, so mangle them as appropriate.
///
-std::string Mangler::makeNameProper(const std::string &X, const char *Prefix) {
- std::string Result;
+std::string Mangler::makeNameProper(const std::string &X, const char *Prefix,
+ const char *PrivatePrefix) {
if (X.empty()) return X; // Empty names are uniqued by the caller.
// If PreserveAsmNames is set, names with asm identifiers are not modified.
return X;
if (!UseQuotes) {
+ std::string Result;
+
// If X does not start with (char)1, add the prefix.
+ bool NeedPrefix = true;
std::string::const_iterator I = X.begin();
- if (*I != 1)
- Result = Prefix;
- else
+ if (*I == 1) {
+ NeedPrefix = false;
++I; // Skip over the marker.
+ }
// Mangle the first letter specially, don't allow numbers.
if (*I >= '0' && *I <= '9')
else
Result += *I;
}
- } else {
- bool NeedsQuotes = false;
-
- std::string::const_iterator I = X.begin();
- 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;
+ if (NeedPrefix) {
+ if (Prefix)
+ Result = Prefix + Result;
+ if (PrivatePrefix)
+ Result = PrivatePrefix + Result;
+ }
+ return Result;
+ }
+
+ bool NeedPrefix = true;
+ bool NeedQuotes = false;
+ std::string Result;
+ std::string::const_iterator I = X.begin();
+ if (*I == 1) {
+ NeedPrefix = false;
+ ++I; // Skip over the marker.
+ }
+
+ // If the first character is a number, we need quotes.
+ if (*I >= '0' && *I <= '9')
+ NeedQuotes = true;
- // 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;
- }
+ // Do an initial scan of the string, checking to see if we need quotes or
+ // to escape a '"' or not.
+ if (!NeedQuotes)
+ for (std::string::const_iterator E = X.end(); I != E; ++I)
+ if (!isCharAcceptable(*I)) {
+ NeedQuotes = true;
+ break;
+ }
- // In the common case, we don't need quotes. Handle this quickly.
- if (!NeedsQuotes) {
- if (*X.begin() != 1)
- return Prefix+X;
+ // In the common case, we don't need quotes. Handle this quickly.
+ if (!NeedQuotes) {
+ if (NeedPrefix) {
+ if (Prefix)
+ Result = Prefix + X;
else
- return X.substr(1);
- }
-
- // Otherwise, construct the string the expensive way.
- I = X.begin();
+ Result = X;
+ if (PrivatePrefix)
+ Result = PrivatePrefix + Result;
+ return Result;
+ } else
+ return X.substr(1);
+ }
- // If X does not start with (char)1, add the prefix.
- if (*I != 1)
- Result = Prefix;
+ // Otherwise, construct the string the expensive way.
+ for (std::string::const_iterator E = X.end(); I != E; ++I) {
+ if (*I == '"')
+ Result += "_QQ_";
+ else if (*I == '\n')
+ Result += "_NL_";
else
- ++I; // Skip the marker if present.
-
- for (std::string::const_iterator E = X.end(); I != E; ++I) {
- if (*I == '"')
- Result += "_QQ_";
- else
- Result += *I;
- }
- Result = '"' + Result + '"';
+ Result += *I;
+ }
+
+ if (NeedPrefix) {
+ if (Prefix)
+ Result = Prefix + X;
+ else
+ Result = X;
+ if (PrivatePrefix)
+ Result = PrivatePrefix + 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()) {
- Name = GV->getName(); // Is an intrinsic function
+ if (isa<Function>(GV) && cast<Function>(GV)->isIntrinsic()) {
+ Name = GV->getNameStart(); // 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);
+ static uint32_t GlobalID = 0;
+
+ unsigned OldID = GlobalID;
+ sys::AtomicIncrement(&GlobalID);
+
+ Name = "__unnamed_" + utostr(TypeUniqueID) + "_" + utostr(OldID);
} else {
- unsigned TypeUniqueID = getTypeID(GV->getType());
- Name = "l" + utostr(TypeUniqueID) + "_" + makeNameProper(GV->getName());
+ if (GV->hasPrivateLinkage())
+ Name = makeNameProper(GV->getName() + Suffix, Prefix, PrivatePrefix);
+ else
+ Name = makeNameProper(GV->getName() + Suffix, Prefix);
}
return Name;
}
-void Mangler::InsertName(GlobalValue *GV,
- std::map<std::string, GlobalValue*> &Names) {
- if (!GV->hasName()) // We must mangle unnamed globals.
- return;
-
- // Figure out if this is already used.
- GlobalValue *&ExistingValue = Names[GV->getName()];
- if (!ExistingValue) {
- ExistingValue = GV;
- } else {
- // If GV is external but the existing one is static, mangle the existing one
- 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->isExternal() &&
- ExistingValue->isExternal()) {
- // 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), PreserveAsmNames(false),
- Count(0), TypeCounter(0) {
- std::fill(AcceptableChars,
- AcceptableChars+sizeof(AcceptableChars)/sizeof(AcceptableChars[0]),
- 0);
+Mangler::Mangler(Module &M, const char *prefix, const char *privatePrefix)
+ : Prefix(prefix), PrivatePrefix (privatePrefix), 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)
markCharAcceptable('_');
markCharAcceptable('$');
markCharAcceptable('.');
-
- // Calculate which global values have names that will collide when we throw
- // away type information.
- std::map<std::string, GlobalValue*> Names;
- for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
- InsertName(I, Names);
- 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