From: Jeff Law Date: Mon, 3 Nov 1997 21:55:49 +0000 (-0700) Subject: Remove last combine patch. rth & jim are working on a new one. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=08bb4b3b2cfdd4cf3c7621df2ec9933041a1bbde;p=gcc.git Remove last combine patch. rth & jim are working on a new one. From-SVN: r16304 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 24f3fc23617..e38e428394f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -8,15 +8,6 @@ Sun Nov 2 23:31:43 1997 Manfred Hollstein 14 char length. * configure: Rebuild. -Sun Nov 2 23:21:36 1997 Richard Henderson - Jim Wilson - - * 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 80fac52e28e..20bcaf9b37e 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)