diff options
| author | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-06-04 05:25:23 +0000 |
|---|---|---|
| committer | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-06-04 05:25:23 +0000 |
| commit | 7c4bf3c579e46f4f4518af8f328b1a30cc0fcc97 (patch) | |
| tree | 120e06e007345238f2e07fededdee19494fca048 /gcc/df-problems.c | |
| parent | 182e98f439ae61096f85ca28e7ef20359742f8c4 (diff) | |
| download | gcc-7c4bf3c579e46f4f4518af8f328b1a30cc0fcc97.tar.gz | |
* 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
Diffstat (limited to 'gcc/df-problems.c')
| -rw-r--r-- | gcc/df-problems.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/gcc/df-problems.c b/gcc/df-problems.c index 25bbba61bb1..5f719c60c95 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)) |