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? Ciao! Steven [1] http://gcc.gnu.org/ml/gcc-patches/2004-07/msg02479.html
splitup_expand_case.diff
Description: Binary data
