From c8eef440f6a71feb14085372c563cad794b25f6f Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Wed, 29 Jul 2009 06:44:13 +0000 Subject: [PATCH] some wording changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77443 91177308-0d34-0410-b5e6-96231b3b80d8 --- docs/LangRef.html | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/docs/LangRef.html b/docs/LangRef.html index e3e710be6b9..2589771915f 100644 --- a/docs/LangRef.html +++ b/docs/LangRef.html @@ -3917,7 +3917,7 @@ Instruction
Arguments:

The first argument is always a pointer, and forms the basis of the - calculation. The remaining arguments are indices, that indicate which of the + calculation. The remaining arguments are indices that indicate which of the elements of the aggregate object are indexed. The interpretation of each index is dependent on the type being indexed into. The first index always indexes the pointer value given as the first argument, the second index @@ -3929,9 +3929,10 @@ Instruction calculation.

The type of each index argument depends on the type it is indexing into. - When indexing into a (packed) structure, only i32 integer + When indexing into a (optionally packed) structure, only i32 integer constants are allowed. When indexing into an array, pointer or - vector, integers of any width are allowed (also non-constants).

+ vector, integers of any width are allowed, and they are not required to be + constant.

For example, let's consider a C code fragment and how it gets compiled to LLVM: