diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/expr.c | 4 |
2 files changed, 10 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1b5cd35bc30..74f634a444d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2011-08-05 Kaz Kojima <kkojima@gcc.gnu.org> + Richard Henderson <rth@redhat.com> + + PR rtl-opt/49982 + * expr.c (fixup_args_size_notes): Look through no-op moves. + 2011-08-05 Uros Bizjak <ubizjak@gmail.com> * config/i386/i386.md (*push<mode>2): Use "o" constraint instead diff --git a/gcc/expr.c b/gcc/expr.c index e5bec34e78c..f170596d330 100644 --- a/gcc/expr.c +++ b/gcc/expr.c @@ -3631,6 +3631,10 @@ fixup_args_size_notes (rtx prev, rtx last, int end_args_size) && XEXP (SET_SRC (set), 0) == stack_pointer_rtx && CONST_INT_P (XEXP (SET_SRC (set), 1))) this_delta = INTVAL (XEXP (SET_SRC (set), 1)); + /* ??? Reload can generate no-op moves, which will be cleaned + up later. Recognize it and continue searching. */ + else if (rtx_equal_p (dest, SET_SRC (set))) + this_delta = 0; else saw_unknown = true; } |
