diff options
| -rw-r--r-- | include/llvm/Support/Mangler.h | 7 | ||||
| -rw-r--r-- | lib/VMCore/Mangler.cpp | 50 |
2 files changed, 55 insertions, 2 deletions
diff --git a/include/llvm/Support/Mangler.h b/include/llvm/Support/Mangler.h index d9234ac50a..23ea37797e 100644 --- a/include/llvm/Support/Mangler.h +++ b/include/llvm/Support/Mangler.h @@ -23,6 +23,7 @@ class Type; class Module; class Value; class GlobalValue; +template <typename T> class SmallVectorImpl; class Mangler { public: @@ -104,6 +105,12 @@ public: /// std::string makeNameProper(const std::string &x, ManglerPrefixTy PrefixTy = Mangler::Default); + + /// 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. + void getNameWithPrefix(SmallVectorImpl<char> &OutName, const GlobalValue *GV, + bool isImplicitlyPrivate); }; } // End llvm namespace diff --git a/lib/VMCore/Mangler.cpp b/lib/VMCore/Mangler.cpp index 8c918434e3..21ba086d19 100644 --- a/lib/VMCore/Mangler.cpp +++ b/lib/VMCore/Mangler.cpp @@ -12,11 +12,12 @@ //===----------------------------------------------------------------------===// #include "llvm/Support/Mangler.h" -#include "llvm/DerivedTypes.h" -#include "llvm/Module.h" +#include "llvm/Function.h" #include "llvm/ADT/STLExtras.h" #include "llvm/ADT/StringExtras.h" #include "llvm/ADT/StringMap.h" +#include "llvm/ADT/SmallVector.h" +#include "llvm/Support/raw_ostream.h" using namespace llvm; static char HexDigit(int V) { @@ -158,6 +159,51 @@ std::string Mangler::getMangledName(const GlobalValue *GV, const char *Suffix, return makeNameProper("__unnamed_" + utostr(ID) + Suffix, PrefixTy); } + +/// 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. +void Mangler::getNameWithPrefix(SmallVectorImpl<char> &OutName, + const GlobalValue *GV, + bool isImplicitlyPrivate) { + + // If the global is anonymous or not led with \1, then add the appropriate + // prefix. + if (!GV->hasName() || GV->getName()[0] != '\1') { + OutName.append(Prefix, Prefix+strlen(Prefix)); + + if (GV->hasPrivateLinkage() || isImplicitlyPrivate) + OutName.append(PrivatePrefix, PrivatePrefix+strlen(PrivatePrefix)); + else if (GV->hasLinkerPrivateLinkage()) + OutName.append(LinkerPrivatePrefix, + LinkerPrivatePrefix+strlen(LinkerPrivatePrefix));; + } + + // If the global has a name, just append it now. + if (GV->hasName()) { + StringRef Name = GV->getName(); + + // Strip off the prefix marker if present. + if (Name[0] != '\1') + OutName.append(Name.begin(), Name.end()); + else + OutName.append(Name.begin()+1, Name.end()); + return; + } + + // If the global variable doesn't have a name, return a unique name for the + // global based on a numbering. + + // 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. + raw_svector_ostream(OutName) << "__unnamed_" << ID; +} + + Mangler::Mangler(Module &M, const char *prefix, const char *privatePrefix, const char *linkerPrivatePrefix) : Prefix(prefix), PrivatePrefix(privatePrefix), |