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| author | Jan Hubicka <jh@suse.cz> | 2010-06-04 07:25:23 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2010-06-04 05:25:23 +0000 |
| commit | 95f4cd5829fb78c97758c2b214a5dc884f0af074 (patch) | |
| tree | 120e06e007345238f2e07fededdee19494fca048 /gcc | |
| parent | 6e2188e0db1c7c4b287d00d69721ae68841e3bcc (diff) | |
| download | gcc-95f4cd5829fb78c97758c2b214a5dc884f0af074.zip gcc-95f4cd5829fb78c97758c2b214a5dc884f0af074.tar.gz gcc-95f4cd5829fb78c97758c2b214a5dc884f0af074.tar.bz2 | |
df-problems.c (df_create_unused_note, [...]): micro-optimize the checks when to add new note.
* df-problems.c (df_create_unused_note, df_note_bb_compute):
micro-optimize the checks when to add new note.
From-SVN: r160249
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/df-problems.c | 8 |
2 files changed, 9 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e0c0358..2ac6fe6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2010-06-03 Jan Hubicka <jh@suse.cz> + + * 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 <froydnj@codesourcery.com> * final.c (output_asm_insn): Call diff --git a/gcc/df-problems.c b/gcc/df-problems.c index 25bbba6..5f719c6 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)) |