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| author | Richard Kenner <kenner@gcc.gnu.org> | 1994-07-05 16:59:42 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1994-07-05 16:59:42 -0400 |
| commit | 5af9117152b00cbffcaff7b74c2a98536d8de1e6 (patch) | |
| tree | 983bed6d2a29bea8db31203c9917a55c62505808 /gcc | |
| parent | 99d3d26e534e11e036364f22ba5614370a4c5f77 (diff) | |
| download | gcc-5af9117152b00cbffcaff7b74c2a98536d8de1e6.zip gcc-5af9117152b00cbffcaff7b74c2a98536d8de1e6.tar.gz gcc-5af9117152b00cbffcaff7b74c2a98536d8de1e6.tar.bz2 | |
(try_combine): If I2DEST was used in I2SRC, it isn't unused just
because there is no SET for I2 anymore.
From-SVN: r7653
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/combine.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 38dca46..0cd1ee8 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -2262,7 +2262,7 @@ try_combine (i3, i2, i1) /* If the reg formerly set in I2 died only once and that was in I3, zero its use count so it won't make `reload' do any work. */ - if (! added_sets_2 && newi2pat == 0) + if (! added_sets_2 && newi2pat == 0 && ! i2dest_in_i2src) { regno = REGNO (i2dest); reg_n_sets[regno]--; @@ -2286,7 +2286,7 @@ try_combine (i3, i2, i1) record_value_for_reg (i1dest, i1_insn, i1_val); regno = REGNO (i1dest); - if (! added_sets_1) + if (! added_sets_1 && ! i1dest_in_i1src) { reg_n_sets[regno]--; if (reg_n_sets[regno] == 0 |