/// "linker_private" linkage.
const char *LinkerPrivatePrefix;
- /// UseQuotes - If this is set, the target accepts global names in quotes,
- /// e.g. "foo bar" is a legal name. This syntax is used instead of escaping
- /// the space character. By default, this is false.
- bool UseQuotes;
-
- /// SymbolsCanStartWithDigit - If this is set, the target allows symbols to
- /// start with digits (e.g., "0x0021"). By default, this is false.
- bool SymbolsCanStartWithDigit;
-
/// AnonGlobalIDs - We need to give global values the same name every time
/// they are mangled. This keeps track of the number we give to anonymous
/// ones.
///
unsigned NextAnonGlobalID;
- /// AcceptableChars - This bitfield contains a one for each character that is
- /// allowed to be part of an unmangled name.
- unsigned AcceptableChars[256 / 32];
-
public:
// Mangler ctor - if a prefix is specified, it will be prepended onto all
// symbols.
Mangler(Module &M, const char *Prefix = "", const char *privatePrefix = "",
const char *linkerPrivatePrefix = "");
- /// setUseQuotes - If UseQuotes is set to true, this target accepts quoted
- /// strings for assembler labels.
- void setUseQuotes(bool Val) { UseQuotes = Val; }
-
- /// setSymbolsCanStartWithDigit - If SymbolsCanStartWithDigit is set to true,
- /// this target allows symbols to start with digits.
- void setSymbolsCanStartWithDigit(bool Val) { SymbolsCanStartWithDigit = Val; }
-
- /// Acceptable Characters - This allows the target to specify which characters
- /// are acceptable to the assembler without being mangled. By default we
- /// allow letters, numbers, '_', '$', '.', which is what GAS accepts, and '@'.
- void markCharAcceptable(unsigned char X) {
- AcceptableChars[X/32] |= 1 << (X&31);
- }
- void markCharUnacceptable(unsigned char X) {
- AcceptableChars[X/32] &= ~(1 << (X&31));
- }
- bool isCharAcceptable(unsigned char X) const {
- return (AcceptableChars[X/32] & (1 << (X&31))) != 0;
- }
-
- /// getMangledName - Returns the mangled name of V, an LLVM Value,
- /// in the current module. If 'Suffix' is specified, the name ends with the
- /// specified suffix. If 'ForcePrivate' is specified, the label is specified
- /// to have a private label prefix.
- ///
- /// FIXME: This is deprecated, new code should use getNameWithPrefix and use
- /// MCSymbol printing to handle quotes or not etc.
- ///
- std::string getMangledName(const GlobalValue *V, const char *Suffix = "",
- bool ForcePrivate = false);
-
/// getNameWithPrefix - Fill OutName with the name of the appropriate prefix
/// and the specified global variable's name. If the global variable doesn't
/// have a name, this fills in a unique name for the global.
/// have a name, this fills in a unique name for the global.
std::string getNameWithPrefix(const GlobalValue *GV,
bool isImplicitlyPrivate = false);
-
-private:
- /// makeNameProper - We don't want identifier names with ., space, or
- /// - in them, so we mangle these characters into the strings "d_",
- /// "s_", and "D_", respectively. This is a very simple mangling that
- /// doesn't guarantee unique names for values. getValueName already
- /// does this for you, so there's no point calling it on the result
- /// from getValueName.
- ///
- /// FIXME: This is deprecated, new code should use getNameWithPrefix and use
- /// MCSymbol printing to handle quotes or not etc.
- ///
- void makeNameProper(SmallVectorImpl<char> &OutName,
- const Twine &Name,
- ManglerPrefixTy PrefixTy = Mangler::Default);
-
};
} // End llvm namespace
//
//===----------------------------------------------------------------------===//
//
-// Unified name mangler for CWriter and assembly backends.
+// Unified name mangler for assembly backends.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/Mangler.h"
-#include "llvm/Function.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/ADT/StringMap.h"
+#include "llvm/GlobalValue.h"
#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/Twine.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
-static char HexDigit(int V) {
- return V < 10 ? V+'0' : V+'A'-10;
-}
-
-static void MangleLetter(SmallVectorImpl<char> &OutName, unsigned char C) {
- OutName.push_back('_');
- OutName.push_back(HexDigit(C >> 4));
- OutName.push_back(HexDigit(C & 15));
- OutName.push_back('_');
-}
-
-/// makeNameProper - We don't want identifier names non-C-identifier characters
-/// in them, so mangle them as appropriate.
-///
-/// FIXME: This is deprecated, new code should use getNameWithPrefix and use
-/// MCSymbol printing to handle quotes or not etc.
-///
-void Mangler::makeNameProper(SmallVectorImpl<char> &OutName,
- const Twine &TheName,
- ManglerPrefixTy PrefixTy) {
- SmallString<256> TmpData;
- StringRef X = TheName.toStringRef(TmpData);
- assert(!X.empty() && "Cannot mangle empty strings");
-
- if (!UseQuotes) {
- // If X does not start with (char)1, add the prefix.
- StringRef::iterator I = X.begin();
- if (*I == 1) {
- ++I; // Skip over the no-prefix marker.
- } else {
- if (PrefixTy == Mangler::Private)
- OutName.append(PrivatePrefix, PrivatePrefix+strlen(PrivatePrefix));
- else if (PrefixTy == Mangler::LinkerPrivate)
- OutName.append(LinkerPrivatePrefix,
- LinkerPrivatePrefix+strlen(LinkerPrivatePrefix));
- OutName.append(Prefix, Prefix+strlen(Prefix));
- }
-
- // Mangle the first letter specially, don't allow numbers unless the target
- // explicitly allows them.
- if (!SymbolsCanStartWithDigit && *I >= '0' && *I <= '9')
- MangleLetter(OutName, *I++);
-
- for (StringRef::iterator E = X.end(); I != E; ++I) {
- if (!isCharAcceptable(*I))
- MangleLetter(OutName, *I);
- else
- OutName.push_back(*I);
- }
- return;
- }
-
- bool NeedPrefix = true;
- bool NeedQuotes = false;
- StringRef::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 (!NeedQuotes)
- for (StringRef::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 (!NeedQuotes) {
- if (!NeedPrefix) {
- OutName.append(X.begin()+1, X.end()); // Strip off the \001.
- return;
- }
-
- if (PrefixTy == Mangler::Private)
- OutName.append(PrivatePrefix, PrivatePrefix+strlen(PrivatePrefix));
- else if (PrefixTy == Mangler::LinkerPrivate)
- OutName.append(LinkerPrivatePrefix,
- LinkerPrivatePrefix+strlen(LinkerPrivatePrefix));
-
- if (Prefix[0] == 0)
- ; // Common noop, no prefix.
- else if (Prefix[1] == 0)
- OutName.push_back(Prefix[0]); // Common, one character prefix.
- else
- OutName.append(Prefix, Prefix+strlen(Prefix)); // Arbitrary prefix.
- OutName.append(X.begin(), X.end());
- return;
- }
-
- // Add leading quote.
- OutName.push_back('"');
-
- // Add prefixes unless disabled.
- if (NeedPrefix) {
- if (PrefixTy == Mangler::Private)
- OutName.append(PrivatePrefix, PrivatePrefix+strlen(PrivatePrefix));
- else if (PrefixTy == Mangler::LinkerPrivate)
- OutName.append(LinkerPrivatePrefix,
- LinkerPrivatePrefix+strlen(LinkerPrivatePrefix));
- OutName.append(Prefix, Prefix+strlen(Prefix));
- }
-
- // Add the piece that we already scanned through.
- OutName.append(X.begin()+!NeedPrefix, I);
-
- // Otherwise, construct the string the expensive way.
- for (StringRef::iterator E = X.end(); I != E; ++I) {
- if (*I == '"') {
- const char *Quote = "_QQ_";
- OutName.append(Quote, Quote+4);
- } else if (*I == '\n') {
- const char *Newline = "_NL_";
- OutName.append(Newline, Newline+4);
- } else
- OutName.push_back(*I);
- }
-
- // Add trailing quote.
- OutName.push_back('"');
-}
-
-/// getMangledName - Returns the mangled name of V, an LLVM Value,
-/// in the current module. If 'Suffix' is specified, the name ends with the
-/// specified suffix. If 'ForcePrivate' is specified, the label is specified
-/// to have a private label prefix.
-///
-/// FIXME: This is deprecated, new code should use getNameWithPrefix and use
-/// MCSymbol printing to handle quotes or not etc.
-///
-std::string Mangler::getMangledName(const GlobalValue *GV, const char *Suffix,
- bool ForcePrivate) {
- assert((!isa<Function>(GV) || !cast<Function>(GV)->isIntrinsic()) &&
- "Intrinsic functions cannot be mangled by Mangler");
-
- ManglerPrefixTy PrefixTy =
- (GV->hasPrivateLinkage() || ForcePrivate) ? Mangler::Private :
- GV->hasLinkerPrivateLinkage() ? Mangler::LinkerPrivate : Mangler::Default;
-
- SmallString<128> Result;
- if (GV->hasName()) {
- makeNameProper(Result, GV->getNameStr() + Suffix, PrefixTy);
- return Result.str().str();
- }
-
- // Get the ID for the global, assigning a new one if we haven't got one
- // already.
- unsigned &ID = AnonGlobalIDs[GV];
- if (ID == 0) ID = NextAnonGlobalID++;
-
- // Must mangle the global into a unique ID.
- makeNameProper(Result, "__unnamed_" + utostr(ID) + Suffix, PrefixTy);
- return Result.str().str();
-}
-
/// getNameWithPrefix - Fill OutName with the name of the appropriate prefix
/// and the specified name as the global variable name. GVName must not be
/// empty.
Mangler::Mangler(Module &M, const char *prefix, const char *privatePrefix,
const char *linkerPrivatePrefix)
: Prefix(prefix), PrivatePrefix(privatePrefix),
- LinkerPrivatePrefix(linkerPrivatePrefix), UseQuotes(false),
- SymbolsCanStartWithDigit(false), NextAnonGlobalID(1) {
- std::fill(AcceptableChars, array_endof(AcceptableChars), 0);
-
- // Letters and numbers are acceptable.
- for (unsigned char X = 'a'; X <= 'z'; ++X)
- markCharAcceptable(X);
- for (unsigned char X = 'A'; X <= 'Z'; ++X)
- markCharAcceptable(X);
- for (unsigned char X = '0'; X <= '9'; ++X)
- markCharAcceptable(X);
-
- // These chars are acceptable.
- markCharAcceptable('_');
- markCharAcceptable('$');
- markCharAcceptable('.');
- markCharAcceptable('@');
+ LinkerPrivatePrefix(linkerPrivatePrefix), NextAnonGlobalID(1) {
}
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