diff options
| author | Chris Lattner <sabre@nondot.org> | 2007-11-05 19:22:50 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2007-11-05 19:22:50 +0000 |
| commit | cf9893d28cea3b3d541b497ee2a45ee6cf177407 (patch) | |
| tree | 48cc5eabb667fdc4fac692f194b6cab4e45744e7 /docs/tutorial | |
| parent | 99005a4b3b7d4a76e05bf81e8c42c5c39f206f8a (diff) | |
clarify why prototype::codegen returns a function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43725 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/tutorial')
| -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 2e961d2f61..3733a66bfc 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> |