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| author | Jeff Law <law@gcc.gnu.org> | 1997-11-03 14:55:49 -0700 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1997-11-03 14:55:49 -0700 |
| commit | 08bb4b3b2cfdd4cf3c7621df2ec9933041a1bbde (patch) | |
| tree | 8ffd777069752441cbfea0565210db123eccbf37 | |
| parent | f6857708b8963071814b4737fcb643318201b082 (diff) | |
| download | gcc-08bb4b3b2cfdd4cf3c7621df2ec9933041a1bbde.zip gcc-08bb4b3b2cfdd4cf3c7621df2ec9933041a1bbde.tar.gz gcc-08bb4b3b2cfdd4cf3c7621df2ec9933041a1bbde.tar.bz2 | |
Remove last combine patch. rth & jim are working on a new one.
From-SVN: r16304
| -rw-r--r-- | gcc/ChangeLog | 9 | ||||
| -rw-r--r-- | gcc/combine.c | 12 |
2 files changed, 4 insertions, 17 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 24f3fc2..e38e428 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -8,15 +8,6 @@ Sun Nov 2 23:31:43 1997 Manfred Hollstein <manfred@s-direktnet.de> 14 char length. * configure: Rebuild. -Sun Nov 2 23:21:36 1997 Richard Henderson <rth@cygnus.com> - Jim Wilson <wilson@cygnus.com> - - * combine.c (try_combine): Don't elim_i1 when it is used in i2src. - - * combine.c (try_combine): When setting elim_i2, check whether newi2pat - sets i2dest. When calling distribute_notes for i3dest_killed, pass - elim_i2 and elim_i1. - Sun Nov 2 19:44:00 1997 Robert Lipe (robertl@dgii.com) * i386/sco5.h: enable -gstabs once again. diff --git a/gcc/combine.c b/gcc/combine.c index 80fac52..20bcaf9 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -1240,7 +1240,6 @@ try_combine (i3, i2, i1) rtx i2pat; /* Indicates if I2DEST or I1DEST is in I2SRC or I1_SRC. */ int i2dest_in_i2src = 0, i1dest_in_i1src = 0, i2dest_in_i1src = 0; - int i1dest_in_i2src = 0; int i1_feeds_i3 = 0; /* Notes that must be added to REG_NOTES in I3 and I2. */ rtx new_i3_notes, new_i2_notes; @@ -1424,7 +1423,6 @@ try_combine (i3, i2, i1) i2dest_in_i2src = reg_overlap_mentioned_p (i2dest, i2src); i1dest_in_i1src = i1 && reg_overlap_mentioned_p (i1dest, i1src); i2dest_in_i1src = i1 && reg_overlap_mentioned_p (i2dest, i1src); - i1dest_in_i2src = i1 && reg_overlap_mentioned_p (i1dest, i2src); /* See if I1 directly feeds into I3. It does if I1DEST is not used in I2SRC. */ @@ -2148,12 +2146,10 @@ try_combine (i3, i2, i1) rtx i3links, i2links, i1links = 0; rtx midnotes = 0; register int regno; - /* Compute which registers we expect to eliminate. newi2pat may be setting - either i3dest or i2dest, so we must check it. */ - rtx elim_i2 = ((newi2pat && reg_set_p (i2dest, newi2pat)) - || i2dest_in_i2src || i2dest_in_i1src + /* Compute which registers we expect to eliminate. */ + rtx elim_i2 = (newi2pat || i2dest_in_i2src || i2dest_in_i1src ? 0 : i2dest); - rtx elim_i1 = i1 == 0 || i1dest_in_i1src || i1dest_in_i2src ? 0 : i1dest; + rtx elim_i1 = i1 == 0 || i1dest_in_i1src ? 0 : i1dest; /* Get the old REG_NOTES and LOG_LINKS from all our insns and clear them. */ @@ -2321,7 +2317,7 @@ try_combine (i3, i2, i1) distribute_notes (gen_rtx (EXPR_LIST, REG_DEAD, i3dest_killed, NULL_RTX), NULL_RTX, i3, newi2pat ? i2 : NULL_RTX, - elim_i2, elim_i1); + NULL_RTX, NULL_RTX); } if (i2dest_in_i2src) |