Rework the routines that convert AP[S]Int into a string. Now, instead of
returning an std::string by value, it fills in a SmallString/SmallVector
passed in. This significantly reduces string thrashing in some cases.
More specifically, this:
- Adds an operator<< and a print method for APInt that allows you to
directly send them to an ostream.
- Reimplements APInt::toString to be much simpler and more efficient
algorithmically in addition to not thrashing strings quite as much.
This speeds up llvm-dis on kc++ by 7%, and may also slightly speed up the
asmprinter. This also fixes a bug I introduced into the asmwriter in a
previous patch w.r.t. alias printing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54873 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/CppBackend/CPPBackend.cpp b/lib/Target/CppBackend/CPPBackend.cpp
index 6aa085b..ce86452 100644
--- a/lib/Target/CppBackend/CPPBackend.cpp
+++ b/lib/Target/CppBackend/CPPBackend.cpp
@@ -733,8 +733,8 @@
}
if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
Out << "ConstantInt* " << constName << " = ConstantInt::get(APInt("
- << cast<IntegerType>(CI->getType())->getBitWidth() << ", "
- << " \"" << CI->getValue().toStringSigned(10) << "\", 10));";
+ << cast<IntegerType>(CI->getType())->getBitWidth() << ", \""
+ << CI->getValue() << "\", 10));";
} else if (isa<ConstantAggregateZero>(CV)) {
Out << "ConstantAggregateZero* " << constName
<< " = ConstantAggregateZero::get(" << typeName << ");";