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| 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 | b8211ff5cfedd3d5414c1c72a743029aba7e5cac (patch) | |
| tree | 48cc5eabb667fdc4fac692f194b6cab4e45744e7 /docs/tutorial | |
| parent | af88e248fd1fda9b25f91faef1134e886c4a56bf (diff) | |
| download | external_llvm-b8211ff5cfedd3d5414c1c72a743029aba7e5cac.zip external_llvm-b8211ff5cfedd3d5414c1c72a743029aba7e5cac.tar.gz external_llvm-b8211ff5cfedd3d5414c1c72a743029aba7e5cac.tar.bz2 | |
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 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> |