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Diffstat (limited to 'docs/tutorial/LangImpl3.html')
| -rw-r--r-- | docs/tutorial/LangImpl3.html | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/docs/tutorial/LangImpl3.html b/docs/tutorial/LangImpl3.html index 2e961d2..3733a66 100644 --- a/docs/tutorial/LangImpl3.html +++ b/docs/tutorial/LangImpl3.html @@ -293,7 +293,13 @@ Function *PrototypeAST::Codegen() { </pre> </div> -<p>This code packs a lot of power into a few lines. The first step is to create +<p>This code packs a lot of power into a few lines. Note first that this +function returns a Function* instead of a Value*. Because a "prototype" really +talks about the external interface for a function (not the value computed by +an expression), it makes sense for it to return the LLVM Function it corresponds +to when codegen'd.</p> + +<p>The next step is to create the <tt>FunctionType</tt> that should be used for a given Prototype. Since all function arguments in Kaleidoscope are of type double, the first line creates a vector of "N" LLVM Double types. It then uses the <tt>FunctionType::get</tt> |