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* tree-call-cdce.c: New file.
(cond_dead_built_in_calls): New static variable.
(input_domain): New struct.
(check_pow): New function.
(check_builtin_call): Ditto.
(check_target_format): Ditto.
(is_call_dce_candidate): Ditto.
(gen_one_condition): Ditto.
(gen_conditions_for_domain): Ditto.
(get_domain): Ditto.
(gen_conditions_for_pow_cst_base): Ditto.
(gen_conditions_for_pow_int_base): Ditto.
(gen_conditions_for_pow): Ditto.
(get_no_error_domain): Ditto.
(gen_shrink_wrap_conditions): Ditto.
(shrink_wrap_one_built_in_call): Ditto.
(shink_wrap_conditional_dead_built_in_calls): Ditto.
(tree_call_cdce): Ditto.
(gate_call_cdce): Ditto.
(pass_call_cdce): New gimple pass.
* passes.c: (init_optimization_passes): New pass.
* tree-pass.h: New pass declaration.
* opts.c (decode_options): New flag setting.
* common.opt: Add -ftree-builtin-call-dce flag.
* Makefile.in: Add new source file.
* tempvar.def: New tv_id.
* doc/invoke.texi (-ftree-builtin-call-dce): New flag.
2008-06-04 Xinliang David Li <davidxl@google.com>
* gcc.dg/cdce1.c: New test.
* gcc.dg/cdce2.c: Ditto.
* g++.dg/cdce3.C: Ditto.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@136374 138bc75d-0d04-0410-961f-82ee72b054a4
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