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| author | Xinliang David Li <davidxl@google.com> | 2008-06-04 21:49:45 +0000 |
|---|---|---|
| committer | Xinliang David Li <davidxl@gcc.gnu.org> | 2008-06-04 21:49:45 +0000 |
| commit | c2699190282c19bd5703de0a606b842774715074 (patch) | |
| tree | e298fb5d3a5ce2f2f94d42716feeeb493ca9e188 /gcc/passes.c | |
| parent | 7db5da56edab33b9dc4ab1991ad06d023c9516b1 (diff) | |
| download | gcc-c2699190282c19bd5703de0a606b842774715074.zip gcc-c2699190282c19bd5703de0a606b842774715074.tar.gz gcc-c2699190282c19bd5703de0a606b842774715074.tar.bz2 | |
tree-call-cdce.c: New file.
2008-06-04 Xinliang David Li <davidxl@google.com>
* 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.
From-SVN: r136374
Diffstat (limited to 'gcc/passes.c')
| -rw-r--r-- | gcc/passes.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/passes.c b/gcc/passes.c index 56862d8..4f19f7a 100644 --- a/gcc/passes.c +++ b/gcc/passes.c @@ -561,6 +561,14 @@ init_optimization_passes (void) NEXT_PASS (pass_copy_prop); NEXT_PASS (pass_merge_phi); NEXT_PASS (pass_dce); + /* Ideally the function call conditional + dead code elimination phase can be delayed + till later where potentially more opportunities + can be found. Due to lack of good ways to + update VDEFs associated with the shrink-wrapped + calls, it is better to do the transformation + here where memory SSA is not built yet. */ + NEXT_PASS (pass_call_cdce); NEXT_PASS (pass_update_address_taken); NEXT_PASS (pass_simple_dse); NEXT_PASS (pass_tail_recursion); |