[cfe-commits] r137925 - in /cfe/trunk: include/clang/Serialization/ASTReader.h lib/Serialization/ASTReader.cpp test/Modules/ test/Modules/Inputs/ test/Modules/Inputs/diamond_bottom.h test/Modules/Inputs/diamond_left.h test/Modules/Inputs/diamond_right.h test/Modules/Inputs/diamond_top.h test/Modules/diamond.c

[Sebastian Redl]

On 18.08.2011, at 06:41, Douglas Gregor wrote:

> Author: dgregor
> Date: Wed Aug 17 23:41:58 2011
> New Revision: 137925
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=137925&view=rev
> Log:
> Teach ModuleManager::addModule() to check whether a particular module
> has already been loaded before allocating a new Module structure. If
> the module has already been loaded (uniquing based on file name), then
> just return the existing module rather than trying to load it again.
> 
> This allows us to load a DAG of modules. Introduce a simple test case
> that forms a diamond-shaped module graph, and illustrates that a
> source file importing the bottom of the diamond can see declarations
> in all four of the modules that make up the diamond.

This is absolutely awesome! It's great to see all this work finally showing the first results.

Sebastian