diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/LangRef.html | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/docs/LangRef.html b/docs/LangRef.html index ed47f1f00e..cdb76848e2 100644 --- a/docs/LangRef.html +++ b/docs/LangRef.html @@ -5419,9 +5419,11 @@ specified by the <var>operation</var> argument:</p> <p>The type of each index argument depends on the type it is indexing into. When indexing into a (optionally packed) structure, only <tt>i32</tt> - integer <b>constants</b> are allowed. When indexing into an array, pointer - or vector, integers of any width are allowed, and they are not required to be - constant. These integers are treated as signed values where relevant.</p> + integer <b>constants</b> are allowed (when using a vector of indices they + must all be the <b>same</b> <tt>i32</tt> integer constant). When indexing + into an array, pointer or vector, integers of any width are allowed, and + they are not required to be constant. These integers are treated as signed + values where relevant.</p> <p>For example, let's consider a C code fragment and how it gets compiled to LLVM:</p> @@ -5520,9 +5522,8 @@ define i32* @foo(%struct.ST* %s) { %iptr = getelementptr [10 x i32]* @arr, i16 0, i16 0 </pre> -<p>In cases where the pointer argument is a vector of pointers, only a - single index may be used, and the number of vector elements has to be - the same. For example: </p> +<p>In cases where the pointer argument is a vector of pointers, each index must + be a vector with the same number of elements. For example: </p> <pre class="doc_code"> %A = getelementptr <4 x i8*> %ptrs, <4 x i64> %offsets, </pre> |