diff options
Diffstat (limited to 'lib/hipe/main/hipe.erl')
| -rw-r--r-- | lib/hipe/main/hipe.erl | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/lib/hipe/main/hipe.erl b/lib/hipe/main/hipe.erl index fff397b060..19b4e8bfe2 100644 --- a/lib/hipe/main/hipe.erl +++ b/lib/hipe/main/hipe.erl @@ -1230,6 +1230,18 @@ option_text(regalloc) -> " optimistic - another variant of a coalescing allocator"; option_text(remove_comments) -> "Strip comments from intermediate code"; +option_text(ra_range_split) -> + "Split live ranges of temporaries live over call instructions\n" + "before performing register allocation.\n" + "Heuristically tries to move stack accesses to the cold path of function.\n" + "This range splitter is more sophisticated than 'ra_restore_reuse', but has\n" + "a significantly larger impact on compile time.\n" + "Should only be used with move coalescing register allocators."; +option_text(ra_restore_reuse) -> + "Split live ranges of temporaries such that straight-line\n" + "code will not need to contain multiple restores from the same stack\n" + "location.\n" + "Should only be used with move coalescing register allocators."; option_text(rtl_ssa) -> "Perform SSA conversion on the RTL level -- default starting at O2"; option_text(rtl_ssa_const_prop) -> @@ -1371,6 +1383,12 @@ opt_keys() -> pp_rtl_linear, ra_partitioned, ra_prespill, + ra_range_split, + ra_restore_reuse, + range_split_min_gain, + range_split_mode1_fudge, + range_split_weight_power, + range_split_weights, regalloc, remove_comments, rtl_ssa, @@ -1409,7 +1427,8 @@ o1_opts(TargetArch) -> icode_ssa_const_prop, icode_ssa_copy_prop, icode_inline_bifs, rtl_ssa, rtl_ssa_const_prop, rtl_ssapre, spillmin_color, use_indexing, remove_comments, - binary_opt, {regalloc,coalescing} | o0_opts(TargetArch)], + binary_opt, {regalloc,coalescing}, ra_restore_reuse + | o0_opts(TargetArch)], case TargetArch of ultrasparc -> Common; @@ -1429,7 +1448,8 @@ o1_opts(TargetArch) -> o2_opts(TargetArch) -> Common = [icode_type, icode_call_elim, % icode_ssa_struct_reuse, - rtl_lcm | (o1_opts(TargetArch) -- [rtl_ssapre])], + ra_range_split, range_split_weights, % XXX: Having defaults here is ugly + rtl_lcm | (o1_opts(TargetArch) -- [rtl_ssapre, ra_restore_reuse])], case TargetArch of T when T =:= amd64 orelse T =:= ppc64 -> % 64-bit targets [icode_range | Common]; @@ -1477,6 +1497,9 @@ opt_negations() -> {no_pp_rtl_ssapre, pp_rtl_ssapre}, {no_ra_partitioned, ra_partitioned}, {no_ra_prespill, ra_prespill}, + {no_ra_range_split, ra_range_split}, + {no_ra_restore_reuse, ra_restore_reuse}, + {no_range_split_weights, range_split_weights}, {no_remove_comments, remove_comments}, {no_rtl_ssa, rtl_ssa}, {no_rtl_ssa_const_prop, rtl_ssa_const_prop}, |