diff options
author | Chris Lattner <sabre@nondot.org> | 2003-10-05 19:32:12 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2003-10-05 19:32:12 +0000 |
commit | 5516347535ddf0c27cd207135ebf9ce975f30673 (patch) | |
tree | 4b89b4e60378e5864eaa0c27c1febe8246ee2805 /support/lib/Support/Mangler.cpp | |
parent | 091bbbada30ef4c17e5f66b740adda0acf7cc31a (diff) |
Move support/lib into lib/Support
Move support/tools into utils
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8878 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'support/lib/Support/Mangler.cpp')
-rw-r--r-- | support/lib/Support/Mangler.cpp | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/support/lib/Support/Mangler.cpp b/support/lib/Support/Mangler.cpp deleted file mode 100644 index d9186a9c93..0000000000 --- a/support/lib/Support/Mangler.cpp +++ /dev/null @@ -1,94 +0,0 @@ -//===-- Mangler.cpp - Self-contained c/asm llvm name mangler --------------===// -// -// Unified name mangler for CWriter and assembly backends. -// -//===----------------------------------------------------------------------===// - -#include "llvm/Support/Mangler.h" -#include "llvm/Module.h" -#include "llvm/Type.h" -#include "Support/StringExtras.h" - -static char HexDigit(int V) { - return V < 10 ? V+'0' : V+'A'-10; -} - -static std::string MangleLetter(unsigned char C) { - return std::string("_")+HexDigit(C >> 4) + HexDigit(C & 15) + "_"; -} - -/// 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) { - std::string Result; - - // Mangle the first letter specially, don't allow numbers... - if ((X[0] < 'a' || X[0] > 'z') && (X[0] < 'A' || X[0] > 'Z') && X[0] != '_') - Result += MangleLetter(X[0]); - else - Result += X[0]; - - for (std::string::const_iterator I = X.begin()+1, E = X.end(); I != E; ++I) - if ((*I < 'a' || *I > 'z') && (*I < 'A' || *I > 'Z') && - (*I < '0' || *I > '9') && *I != '_') - Result += MangleLetter(*I); - else - Result += *I; - return Result; -} - -std::string Mangler::getValueName(const Value *V) { - // Check to see whether we've already named V. - ValueMap::iterator VI = Memo.find(V); - if (VI != Memo.end()) { - return VI->second; // Return the old name for V. - } - - std::string name; - if (V->hasName()) { // Print out the label if it exists... - // Name mangling occurs as follows: - // - If V is not a global, mangling always occurs. - // - Otherwise, mangling occurs when any of the following are true: - // 1) V has internal linkage - // 2) V's name would collide if it is not mangled. - // - const GlobalValue* gv = dyn_cast<GlobalValue>(V); - if (gv && !gv->hasInternalLinkage() && !MangledGlobals.count(gv)) { - name = makeNameProper(gv->getName()); - if (AddUnderscorePrefix) name = "_" + name; - } else { - // Non-global, or global with internal linkage / colliding name - // -> mangle. - name = "l" + utostr(V->getType()->getUniqueID()) + "_" + - makeNameProper(V->getName()); - } - } else { - name = "ltmp_" + utostr(Count++) + "_" - + utostr(V->getType()->getUniqueID()); - } - - Memo[V] = name; - return name; -} - -Mangler::Mangler(Module &m, bool addUnderscorePrefix) - : M(m), AddUnderscorePrefix(addUnderscorePrefix) { - // Calculate which global values have names that will collide when we throw - // away type information. - std::set<std::string> FoundNames; - for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I) - if (I->hasName()) // If the global has a name... - if (FoundNames.count(I->getName())) // And the name is already used - MangledGlobals.insert(I); // Mangle the name - else - FoundNames.insert(I->getName()); // Otherwise, keep track of name - - for (Module::giterator I = M.gbegin(), E = M.gend(); I != E; ++I) - if (I->hasName()) // If the global has a name... - if (FoundNames.count(I->getName())) // And the name is already used - MangledGlobals.insert(I); // Mangle the name - else - FoundNames.insert(I->getName()); // Otherwise, keep track of name -} - |