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| author | Chris Lattner <sabre@nondot.org> | 2008-04-24 05:59:56 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2008-04-24 05:59:56 +0000 |
| commit | 05d670971e5de3b199b0bbdcd36c4062b8c0065e (patch) | |
| tree | 34cc1a588e51f7979ce5e8943ba1c6063c83efd4 /docs/LangRef.html | |
| parent | eb5f4092d9fab33c10a27549a80edd3ac25de68f (diff) | |
| download | llvm-05d670971e5de3b199b0bbdcd36c4062b8c0065e.tar.gz llvm-05d670971e5de3b199b0bbdcd36c4062b8c0065e.tar.bz2 llvm-05d670971e5de3b199b0bbdcd36c4062b8c0065e.tar.xz | |
Doc updates/edits, contributed by Terence Parr!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50205 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/LangRef.html')
| -rw-r--r-- | docs/LangRef.html | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/docs/LangRef.html b/docs/LangRef.html index 9679291125..6591b27303 100644 --- a/docs/LangRef.html +++ b/docs/LangRef.html @@ -3020,8 +3020,8 @@ provided depend on the type of the first pointer argument. The '<tt>getelementptr</tt>' instruction is used to index down through the type levels of a structure or to a specific index in an array. When indexing into a structure, only <tt>i32</tt> integer constants are allowed. When indexing -into an array or pointer, only integers of 32 or 64 bits are allowed, and will -be sign extended to 64-bit values.</p> +into an array or pointer, only integers of 32 or 64 bits are allowed; 32-bit +values will be sign extended to 64-bits if required.</p> <p>For example, let's consider a C code fragment and how it gets compiled to LLVM:</p> @@ -3096,7 +3096,7 @@ the LLVM code for the given testcase is equivalent to:</p> <p>Note that it is undefined to access an array out of bounds: array and pointer indexes must always be within the defined bounds of the array type. -The one exception for this rules is zero length arrays. These arrays are +The one exception for this rule is zero length arrays. These arrays are defined to be accessible as variable length arrays, which requires access beyond the zero'th element.</p> @@ -4207,7 +4207,7 @@ value address) contains the meta-data to be associated with the root.</p> <h5>Semantics:</h5> -<p>At runtime, a call to this intrinsics stores a null pointer into the "ptrloc" +<p>At runtime, a call to this intrinsic stores a null pointer into the "ptrloc" location. At compile-time, the code generator generates information to allow the runtime to find the pointer at GC safe points. The '<tt>llvm.gcroot</tt>' intrinsic may only be used in a function which <a href="#gc">specifies a GC |