* except.h (in_same_eh_region): New prototype.
(free_insn_eh_region, init_insn_eh_region): New prototypes.
* except.c (insn_eh_region, maximum_uid): New static variables.
(set_insn_eh_region): New static function to set region numbers.
(free_insn_eh_region): New function to free EH region table.
(init_insn_eh_region): New function to initialize EH region table.
(in_same_eh_region): New function used to determine if two rtl
instructions are in the same exception region or not.
* final.c (final): Initialize the table indicating which instructions
belong in which exception region.
* genpeep.c (main): Add "except.h" to include file list in generated
file insn-peep.c.
* config/sparc/sparc.md: Add calls to 'in_same_eh_region' in 4
peepholes involving calls and unconditional branches.
From-SVN: r18622
