Move ConstantFP construction back to the 2.5-ish API.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77247 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/tutorial/LangImpl4.html b/docs/tutorial/LangImpl4.html
index 41f3a2c..45002d2 100644
--- a/docs/tutorial/LangImpl4.html
+++ b/docs/tutorial/LangImpl4.html
@@ -869,7 +869,7 @@
 Value *ErrorV(const char *Str) { Error(Str); return 0; }
 
 Value *NumberExprAST::Codegen() {
-  return getGlobalContext().getConstantFP(APFloat(Val));
+  return ConstantFP::get(getGlobalContext(), APFloat(Val));
 }
 
 Value *VariableExprAST::Codegen() {