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| author | Richard Kenner <kenner@vlsi1.ultra.nyu.edu> | 2001-02-19 00:09:28 +0000 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 2001-02-18 19:09:28 -0500 |
| commit | 48aba75b6b84511c3ffb0a38029b69ed9286917b (patch) | |
| tree | f06f2097d9742791c45ef4547d93d8a47df3a55b | |
| parent | 3335f1d984358b093678719844d52027ec5d01e1 (diff) | |
| download | gcc-48aba75b6b84511c3ffb0a38029b69ed9286917b.zip gcc-48aba75b6b84511c3ffb0a38029b69ed9286917b.tar.gz gcc-48aba75b6b84511c3ffb0a38029b69ed9286917b.tar.bz2 | |
toplev.c (note_deferral_of_defined_inlined_function): Argument FNDECL may be unused.
* toplev.c (note_deferral_of_defined_inlined_function): Argument
FNDECL may be unused.
* toplev.c (rest_of_compilation): Don't have CSE skip blocks or
follow jumps after first run.
If -fexpensive-optimizations rerun CSE after GCSE and iterate until
it doesn't change any jumps.
From-SVN: r39861
| -rw-r--r-- | gcc/ChangeLog | 11 | ||||
| -rw-r--r-- | gcc/toplev.c | 37 |
2 files changed, 41 insertions, 7 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 8b64e26..52042ac 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,13 @@ +Sun Feb 18 15:45:17 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu> + + * toplev.c (note_deferral_of_defined_inlined_function): Argument + FNDECL may be unused. + + * toplev.c (rest_of_compilation): Don't have CSE skip blocks or + follow jumps after first run. + If -fexpensive-optimizations rerun CSE after GCSE and iterate until + it doesn't change any jumps. + Sun Feb 18 17:05:50 2001 Jeffrey A Law (law@cygnus.com) * Makefile.in (rtlanal.o): Depend on hard-reg-set.h. @@ -9,6 +19,7 @@ Sun Feb 18 17:05:50 2001 Jeffrey A Law (law@cygnus.com) (rtx_varies_p, rtx_addr_can_trap_p): Similarly. Sun Feb 18 15:45:17 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu> +>>>>>>> 1.9328 * sibcall.c (optimize_sibling_and_tail_recursive_call): Compare against last real insn in basic block. diff --git a/gcc/toplev.c b/gcc/toplev.c index 6a00107..b76b6ba 100644 --- a/gcc/toplev.c +++ b/gcc/toplev.c @@ -2687,7 +2687,7 @@ note_deferral_of_defined_inline_function (decl) void note_outlining_of_inline_function (fndecl) - tree fndecl; + tree fndecl ATTRIBUTE_UNUSED; { #ifdef DWARF2_DEBUGGING_INFO /* The DWARF 2 backend tries to reduce debugging bloat by not emitting @@ -3004,9 +3004,10 @@ rest_of_compilation (decl) tem = cse_main (insns, max_reg_num (), 0, rtl_dump_file); - /* If we are not running the second CSE pass, then we are no longer - expecting CSE to be run. */ - cse_not_expected = !flag_rerun_cse_after_loop; + /* If we are not running more CSE passes, then we are no longer + expecting CSE to be run. But always rerun it in a cheap mode. */ + cse_not_expected = !flag_rerun_cse_after_loop && !flag_gcse; + flag_cse_skip_blocks = flag_cse_follow_jumps = 0; if (tem || optimize > 1) { @@ -3105,6 +3106,8 @@ rest_of_compilation (decl) if (optimize > 0 && flag_gcse) { + int tem2 = 0; + timevar_push (TV_GCSE); open_dump_file (DFI_gcse, decl); @@ -3112,14 +3115,34 @@ rest_of_compilation (decl) cleanup_cfg (insns); tem = gcse_main (insns, rtl_dump_file); - /* If gcse altered any jumps, rerun jump optimizations to clean - things up. */ - if (tem) + /* If -fexpensive-optimizations, re-run CSE to clean up things done + by gcse. */ + if (flag_expensive_optimizations) + { + timevar_push (TV_CSE); + reg_scan (insns, max_reg_num (), 1); + tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file); + timevar_pop (TV_CSE); + cse_not_expected = !flag_rerun_cse_after_loop; + } + + /* If gcse or cse altered any jumps, rerun jump optimizations to clean + things up. Then possibly re-run CSE again. */ + while (tem || tem2) { + tem = tem2 = 0; timevar_push (TV_JUMP); jump_optimize (insns, !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES, !JUMP_AFTER_REGSCAN); timevar_pop (TV_JUMP); + + if (flag_expensive_optimizations) + { + timevar_push (TV_CSE); + reg_scan (insns, max_reg_num (), 1); + tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file); + timevar_pop (TV_CSE); + } } close_dump_file (DFI_gcse, print_rtl, insns); |