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.

llvm-svn: 54873

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/examples/Fibonacci/fibonacci.cpp b/llvm/examples/Fibonacci/fibonacci.cpp
index 73dff11031c..f4c5c3d698a 100644
--- a/llvm/examples/Fibonacci/fibonacci.cpp
+++ b/llvm/examples/Fibonacci/fibonacci.cpp
@@ -116,6 +116,6 @@ int main(int argc, char **argv) {
   GenericValue GV = EE->runFunction(FibF, Args);
 
   // import result of execution
-  std::cout << "Result: " << GV.IntVal.toStringUnsigned(10) << "\n";
+  std::cout << "Result: " << GV.IntVal << "\n";
   return 0;
 }