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| author | Jim Wilson <wilson@gcc.gnu.org> | 1993-03-15 11:33:21 -0800 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1993-03-15 11:33:21 -0800 |
| commit | 8b69d15430803939880737da8e6762d554b5fd01 (patch) | |
| tree | d56b7f5449b9b059e349788a46821b663becf524 /gcc/sched.c | |
| parent | 45c45e79fc5661a448f0ff3d40ab1c2a6ca44563 (diff) | |
| download | gcc-8b69d15430803939880737da8e6762d554b5fd01.zip gcc-8b69d15430803939880737da8e6762d554b5fd01.tar.gz gcc-8b69d15430803939880737da8e6762d554b5fd01.tar.bz2 | |
(adjust_priority): Comment unreachable code.
(memrefs_conflict_p): Add comment about Fortran aliasing.
From-SVN: r3740
Diffstat (limited to 'gcc/sched.c')
| -rw-r--r-- | gcc/sched.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/sched.c b/gcc/sched.c index 386d66e..cd844cb 100644 --- a/gcc/sched.c +++ b/gcc/sched.c @@ -514,6 +514,9 @@ find_symbolic_term (x) Nice to notice that varying addresses cannot conflict with fp if no local variables had their addresses taken, but that's too hard now. */ +/* ??? In Fortran, references to a array parameter can never conflict with + another array parameter. */ + static int memrefs_conflict_p (xsize, x, ysize, y, c) rtx x, y; @@ -2306,6 +2309,8 @@ adjust_priority (prev) rtx note; int n_deaths = 0; + /* ??? This code has no effect, because REG_DEAD notes are removed + before we ever get here. */ for (note = REG_NOTES (prev); note; note = XEXP (note, 1)) if (REG_NOTE_KIND (note) == REG_DEAD) n_deaths += 1; |