From 89fef139c108ada8da9a45bdd2d45ec4ebc96013 Mon Sep 17 00:00:00 2001
From: Daniel Dunbar
Date: Mon, 8 Jun 2009 22:17:53 +0000
Subject: [PATCH] Document the stack alignment part of target data description.
llvm-svn: 73089
---
docs/LangRef.html | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/docs/LangRef.html b/docs/LangRef.html
index 60217ecff42..c4255ba296e 100644
--- a/docs/LangRef.html
+++ b/docs/LangRef.html
@@ -1177,6 +1177,9 @@ aspect of the data layout. The specifications accepted are as follows:
asize:abi:pref
This specifies the alignment for an aggregate type of a given bit
size.
+ ssize:abi:pref
+ This specifies the alignment for a stack object of a given bit
+ size.
When constructing the data layout for a given target, LLVM starts with a
default set of specifications which are then (possibly) overriden by the
@@ -1196,6 +1199,7 @@ are given in this list:
v64:64:64 - 64-bit vector is 64-bit aligned
v128:128:128 - 128-bit vector is 128-bit aligned
a0:0:1 - aggregates are 8-bit aligned
+ s0:64:64 - stack objects are 64-bit aligned
When LLVM is determining the alignment for a given type, it uses the
following rules: