[llvm-commits] [llvm] r79439 - in /llvm/trunk: include/llvm/CodeGen/SelectionDAG.h lib/CodeGen/SelectionDAG/SelectionDAG.cpp lib/Target/X86/X86ISelDAGToDAG.cpp test/CodeGen/X86/live-out-reg-info.ll test/CodeGen/X86/test-shrink.ll

[Eli Friedman]

On Wed, Aug 19, 2009 at 11:16 AM, Dan Gohman<gohman at apple.com> wrote:
> Author: djg
> Date: Wed Aug 19 13:16:17 2009
> New Revision: 79439
>
> URL: http://llvm.org/viewvc/llvm-project?rev=79439&view=rev
> Log:
> Add an x86 peep that narrows TEST instructions to forms that use
> a smaller encoding. These kinds of patterns are very frequent in
> sqlite3, for example.

Hmm... the one issue I can think of is that the way it's implemented,
this might actually make the code worse if the operand is in memory;
have you thought about that at all?

-Eli