[llvm-commits] [llvm] r114312 - /llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

[Chris Lattner]

On Sep 19, 2010, at 12:51 PM, Owen Anderson wrote:

> Author: resistor
> Date: Sun Sep 19 14:51:55 2010
> New Revision: 114312
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=114312&view=rev
> Log:
> Tentatively enabled DAGCombiner Alias Analysis by default.  As far as I know,
> r114268 fixed the last of the blockers to enabling it.  I will be monitoring
> for failures.

What is the compile-time performance impact of this?

-Chris

> 
> Modified:
>    llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
> 
> Modified: llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp?rev=114312&r1=114311&r2=114312&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp (original)
> +++ llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp Sun Sep 19 14:51:55 2010
> @@ -46,7 +46,7 @@
> 
> namespace {
>   static cl::opt<bool>
> -    CombinerAA("combiner-alias-analysis", cl::Hidden,
> +    CombinerAA("combiner-alias-analysis", cl::init(true), cl::Hidden,
>                cl::desc("Turn on alias analysis during testing"));
> 
>   static cl::opt<bool>
> 
> 
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