From 7c4bf3c579e46f4f4518af8f328b1a30cc0fcc97 Mon Sep 17 00:00:00 2001 From: hubicka Date: Fri, 4 Jun 2010 05:25:23 +0000 Subject: [PATCH] * df-problems.c (df_create_unused_note, df_note_bb_compute): micro-optimize the checks when to add new note. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@160249 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ChangeLog | 5 +++++ gcc/df-problems.c | 8 ++++---- 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e0c0358ce5c1..2ac6fe65ca16 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2010-06-03 Jan Hubicka + + * df-problems.c (df_create_unused_note, df_note_bb_compute): + micro-optimize the checks when to add new note. + 2010-06-03 Nathan Froyd * final.c (output_asm_insn): Call diff --git a/gcc/df-problems.c b/gcc/df-problems.c index 25bbba61bb1d..5f719c60c95b 100644 --- a/gcc/df-problems.c +++ b/gcc/df-problems.c @@ -3387,8 +3387,8 @@ df_create_unused_note (rtx insn, rtx old, df_ref def, } #endif - if (!(bitmap_bit_p (live, dregno) - || (DF_REF_FLAGS (def) & DF_REF_MW_HARDREG) + if (!((DF_REF_FLAGS (def) & DF_REF_MW_HARDREG) + || bitmap_bit_p (live, dregno) || bitmap_bit_p (artificial_uses, dregno) || df_ignore_stack_reg (dregno))) { @@ -3757,10 +3757,10 @@ df_note_bb_compute (unsigned int bb_index, else dead_debug_insert_before (&debug, uregno, insn); - if ( (!(DF_REF_FLAGS (use) & DF_REF_MW_HARDREG)) + if ( (!(DF_REF_FLAGS (use) + & (DF_REF_MW_HARDREG | DF_REF_READ_WRITE))) && (!bitmap_bit_p (do_not_gen, uregno)) && (!bitmap_bit_p (artificial_uses, uregno)) - && (!(DF_REF_FLAGS (use) & DF_REF_READ_WRITE)) && (!df_ignore_stack_reg (uregno))) { rtx reg = (DF_REF_LOC (use)) -- 2.47.2