5 commits

Author	SHA1	Message	Date
Ian Romanick	b5a7cf9344	Reimplement ir_dead_code_visitor using ir_hierarchical_vistor ... The output of all test cases was verified to be the same using diff.	2010-05-17 12:03:13 -07:00
Ian Romanick	86790dd43f	Replace find_dead_code with visit_exec_list ... find_dead_code appears to be an open-coded version of visit_exec_list that was implemented first.	2010-05-17 12:03:13 -07:00
Eric Anholt	438f38c55a	ir_dead_code: Fix segfault on handling a return statement with no value.	2010-04-29 13:54:19 -07:00
Kenneth Graunke	6202cbfe36	Fix ir_dead_code for function refactoring.	2010-04-21 16:02:15 -07:00
Eric Anholt	7d21104a8b	Remove dead code assignments and variable declarations. ... This pass only works on assignments where the variable is never referenced. There is no code flow analysis, so it can't do a better job of avoiding redundant assignments. For now, the optimizer only does do_dead_code_unlinked(), so it won't trim the builtin variable list or initializers outside of the scope of functions. This is because we don't have the visibility into other functions that might get linked in in order to eliminate work on global variables.	2010-04-19 15:33:52 -07:00