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A bunch of string-related microoptimizations in Mangler. 

llvm-svn: 100928
This commit is contained in:
Benjamin Kramer 2010-04-10 16:03:31 +00:00
parent 2e8ca0b86d
commit 1554e4a4bb
1 changed files with 22 additions and 22 deletions
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44
clang/lib/CodeGen/Mangle.cpp
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@ -1305,7 +1305,7 @@ void CXXNameMangler::mangleExpression(const Expr *E) {
mangleCalledExpression(CE->getCallee(), CE->getNumArgs());
for (unsigned I = 0, N = CE->getNumArgs(); I != N; ++I)
mangleExpression(CE->getArg(I));
Out << "E";
Out << 'E';
break;
}
@ -1349,9 +1349,9 @@ void CXXNameMangler::mangleExpression(const Expr *E) {
Out << "cv";
mangleType(CE->getType());
if (N != 1) Out << "_";
if (N != 1) Out << '_';
for (unsigned I = 0; I != N; ++I) mangleExpression(CE->getArg(I));
if (N != 1) Out << "E";
if (N != 1) Out << 'E';
break;
}
@ -1362,21 +1362,21 @@ void CXXNameMangler::mangleExpression(const Expr *E) {
Out << "cv";
mangleType(CE->getType());
if (N != 1) Out << "_";
if (N != 1) Out << '_';
for (unsigned I = 0; I != N; ++I) mangleExpression(CE->getArg(I));
if (N != 1) Out << "E";
if (N != 1) Out << 'E';
break;
}
case Expr::SizeOfAlignOfExprClass: {
const SizeOfAlignOfExpr *SAE = cast<SizeOfAlignOfExpr>(E);
if (SAE->isSizeOf()) Out << "s";
else Out << "a";
if (SAE->isSizeOf()) Out << 's';
else Out << 'a';
if (SAE->isArgumentType()) {
Out << "t";
Out << 't';
mangleType(SAE->getArgumentType());
} else {
Out << "z";
Out << 'z';
mangleExpression(SAE->getArgumentExpr());
}
break;
@ -1504,7 +1504,7 @@ void CXXNameMangler::mangleExpression(const Expr *E) {
case Expr::FloatingLiteralClass: {
const FloatingLiteral *FL = cast<FloatingLiteral>(E);
Out << "L";
Out << 'L';
mangleType(FL->getType());
// TODO: avoid this copy with careful stream management.
@ -1512,12 +1512,12 @@ void CXXNameMangler::mangleExpression(const Expr *E) {
FL->getValue().bitcastToAPInt().toString(Buffer, 16, false);
Out.write(Buffer.data(), Buffer.size());
Out << "E";
Out << 'E';
break;
}
case Expr::CharacterLiteralClass:
Out << "L";
Out << 'L';
mangleType(E->getType());
Out << cast<CharacterLiteral>(E)->getValue();
Out << 'E';
@ -1579,20 +1579,20 @@ void CXXNameMangler::mangleCXXDtorType(CXXDtorType T) {
void CXXNameMangler::mangleTemplateArgs(const TemplateParameterList &PL,
const TemplateArgumentList &AL) {
// <template-args> ::= I <template-arg>+ E
Out << "I";
Out << 'I';
for (unsigned i = 0, e = AL.size(); i != e; ++i)
mangleTemplateArg(PL.getParam(i), AL[i]);
Out << "E";
Out << 'E';
}
void CXXNameMangler::mangleTemplateArgs(const TemplateParameterList &PL,
const TemplateArgument *TemplateArgs,
unsigned NumTemplateArgs) {
// <template-args> ::= I <template-arg>+ E
Out << "I";
Out << 'I';
for (unsigned i = 0; i != NumTemplateArgs; ++i)
mangleTemplateArg(PL.getParam(i), TemplateArgs[i]);
Out << "E";
Out << 'E';
}
void CXXNameMangler::mangleTemplateArg(const NamedDecl *P,
@ -1688,8 +1688,7 @@ bool CXXNameMangler::mangleSubstitution(QualType T) {
}
bool CXXNameMangler::mangleSubstitution(uintptr_t Ptr) {
llvm::DenseMap<uintptr_t, unsigned>::iterator I =
Substitutions.find(Ptr);
llvm::DenseMap<uintptr_t, unsigned>::iterator I = Substitutions.find(Ptr);
if (I == Substitutions.end())
return false;
@ -1701,9 +1700,8 @@ bool CXXNameMangler::mangleSubstitution(uintptr_t Ptr) {
// <seq-id> is encoded in base-36, using digits and upper case letters.
char Buffer[10];
char *BufferPtr = Buffer + 9;
char *BufferPtr = llvm::array_endof(Buffer);
*BufferPtr = 0;
if (SeqID == 0) *--BufferPtr = '0';
while (SeqID) {
@ -1715,7 +1713,9 @@ bool CXXNameMangler::mangleSubstitution(uintptr_t Ptr) {
SeqID /= 36;
}
Out << 'S' << BufferPtr << '_';
Out << 'S'
<< llvm::StringRef(BufferPtr, llvm::array_endof(Buffer)-BufferPtr)
<< '_';
}
return true;
@ -1990,7 +1990,7 @@ void MangleContext::mangleCXXCtorVtable(const CXXRecordDecl *RD, int64_t Offset,
Mangler.getStream() << "_ZTC";
Mangler.mangleName(RD);
Mangler.getStream() << Offset;
Mangler.getStream() << "_";
Mangler.getStream() << '_';
Mangler.mangleName(Type);
}