Author: lattner
Date: Mon Jan 14 22:34:22 2008
New Revision: 45998
URL: http://llvm.org/viewvc/llvm-project?rev=45998&view=rev
Log:
clarify that byval is valid for any pointer argument.
Modified:
llvm/trunk/docs/LangRef.html
Modified: llvm/trunk/docs/LangRef.html
URL:
http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/LangRef.html?rev=45998&r1=45997&r2=45998&view=diff
==============================================================================
--- llvm/trunk/docs/LangRef.html (original)
+++ llvm/trunk/docs/LangRef.html Mon Jan 14 22:34:22 2008
@@ -810,11 +810,12 @@
target-specific</dd>
<dt><tt>byval</tt></dt>
- <dd>This indicates that the pointer parameter is really an aggregate that
- was passed by value to the function. The attribute implies that a hidden
- copy of the struct is made between the caller and the callee, so the
- callee is unable to modify the struct in the callee. This attribute is
only
- valid on llvm pointer arguments.</dd>
+ <dd>This indicates that the pointer parameter should really be passed by
+ value to the function. The attribute implies that a hidden copy of the
+ pointee is made between the caller and the callee, so the callee is unable
+ to modify the value in the callee. This attribute is only valid on llvm
+ pointer arguments. It is generally used to pass structs and arrays by
+ value, but is also valid on scalars (even though this is silly).</dd>
<dt><tt>sret</tt></dt>
<dd>This indicates that the parameter specifies the address of a structure
_______________________________________________
llvm-commits mailing list
llvm-commits@cs.uiuc.edu
http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
