On Wed, Jul 4, 2012 at 8:42 AM, Steven Bosscher <stevenb....@gmail.com> wrote: > Hello, > > The attached patch splits out the code generation bits from > expand_case to two new functions, emit_case_decision_tree and > emit_case_dispatch_table. > > I also added some bits of new code to help me better understand how > the code generation for decision trees works (I took dump_case_nodes > taken from a patch by DJ that somehow never made it in [1]), and I've > added a lot of comments about where certain magic numbers originated. > > While working on this, I noticed that one of the switch test cases > optimizes to an empty function, so I changed this test case. Also, > some try_casesi ATTRIBUTE_UNUSED markers are no longer necessary. > > Bootstrapped&tested on powerpc64-unknown-linux-gnu. OK for trunk?
Ok. Thanks, Richard. > Ciao! > Steven > > [1] http://gcc.gnu.org/ml/gcc-patches/2004-07/msg02479.html
