diff options
Diffstat (limited to 'lib/hipe/main')
| -rw-r--r-- | lib/hipe/main/hipe.app.src | 1 | ||||
| -rw-r--r-- | lib/hipe/main/hipe.erl | 7 | ||||
| -rw-r--r-- | lib/hipe/main/hipe_main.erl | 14 |
3 files changed, 19 insertions, 3 deletions
diff --git a/lib/hipe/main/hipe.app.src b/lib/hipe/main/hipe.app.src index aa86b6dc5b..f8487151d7 100644 --- a/lib/hipe/main/hipe.app.src +++ b/lib/hipe/main/hipe.app.src @@ -88,6 +88,7 @@ hipe_icode2rtl, hipe_icode_bincomp, hipe_icode_callgraph, + hipe_icode_call_elim, hipe_icode_cfg, hipe_icode_coordinator, hipe_icode_ebb, diff --git a/lib/hipe/main/hipe.erl b/lib/hipe/main/hipe.erl index 77cf39460a..981265b3e9 100644 --- a/lib/hipe/main/hipe.erl +++ b/lib/hipe/main/hipe.erl @@ -1166,6 +1166,9 @@ option_text(caller_save_spill_restore) -> "Activates caller save register spills and restores"; option_text(debug) -> "Outputs internal debugging information during compilation"; +option_text(icode_call_elim) -> + "Performs call elimination of BIFs that are side-effect free\n" ++ + "only on some argument types"; option_text(icode_range) -> "Performs integer range analysis on the Icode level"; option_text(icode_ssa_check) -> @@ -1319,6 +1322,7 @@ opt_keys() -> get_called_modules, split_arith, split_arith_unsafe, + icode_call_elim, icode_inline_bifs, icode_ssa_check, icode_ssa_copy_prop, @@ -1400,7 +1404,7 @@ o1_opts(TargetArch) -> o2_opts(TargetArch) -> Common = [icode_ssa_const_prop, icode_ssa_copy_prop, % icode_ssa_struct_reuse, - icode_type, icode_inline_bifs, rtl_lcm, + icode_type, icode_inline_bifs, icode_call_elim, rtl_lcm, rtl_ssa, rtl_ssa_const_prop, spillmin_color, use_indexing, remove_comments, concurrent_comp, binary_opt | o1_opts(TargetArch)], @@ -1430,6 +1434,7 @@ opt_negations() -> {no_icode_inline_bifs, icode_inline_bifs}, {no_icode_range, icode_range}, {no_icode_split_arith, icode_split_arith}, + {no_icode_call_elim, icode_call_elim}, {no_icode_ssa_check, icode_ssa_check}, {no_icode_ssa_copy_prop, icode_ssa_copy_prop}, {no_icode_ssa_const_prop, icode_ssa_const_prop}, diff --git a/lib/hipe/main/hipe_main.erl b/lib/hipe/main/hipe_main.erl index be5050e155..b9d783d20a 100644 --- a/lib/hipe/main/hipe_main.erl +++ b/lib/hipe/main/hipe_main.erl @@ -284,8 +284,9 @@ icode_ssa_type(IcodeSSA, MFA, Options, Servers) -> false -> AnnIcode1 end, AnnIcode3 = icode_range_analysis(AnnIcode2, MFA, Options, Servers), - pp(AnnIcode3, MFA, icode, pp_range_icode, Options, Servers), - hipe_icode_type:unannotate_cfg(AnnIcode3) + AnnIcode4 = icode_eliminate_safe_calls(AnnIcode3, Options), + pp(AnnIcode4, MFA, icode, pp_range_icode, Options, Servers), + hipe_icode_type:unannotate_cfg(AnnIcode4) end. icode_ssa_convert(IcodeCfg, Options) -> @@ -334,6 +335,15 @@ icode_range_analysis(IcodeSSA, MFA, Options, Servers) -> IcodeSSA end. +icode_eliminate_safe_calls(IcodeSSA, Options) -> + case proplists:get_bool(icode_call_elim, Options) of + true -> + ?option_time(hipe_icode_call_elim:cfg(IcodeSSA), + "Icode SSA safe call elimination", Options); + false -> + IcodeSSA + end. + icode_ssa_dead_code_elimination(IcodeSSA, Options) -> IcodeSSA1 = ?option_time(hipe_icode_ssa:remove_dead_code(IcodeSSA), "Icode SSA dead code elimination pass 2", |