diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/modulo-sched.c | 17 |
2 files changed, 22 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c20caa8..b0756d0 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2011-09-30 Revital Eres <revital.eres@linaro.org> + + * modulo-sched.c (generate_reg_moves): Skip instructions that + do not set a register and verify no regmoves are created for + !single_set instructions. + 2011-09-30 Bernd Schmidt <bernds@codesourcery.com> * hw-doloop.c (scan_loop): Compute register usage only for non-debug diff --git a/gcc/modulo-sched.c b/gcc/modulo-sched.c index 28be942..7c33be5 100644 --- a/gcc/modulo-sched.c +++ b/gcc/modulo-sched.c @@ -476,7 +476,12 @@ generate_reg_moves (partial_schedule_ptr ps, bool rescan) sbitmap *uses_of_defs; rtx last_reg_move; rtx prev_reg, old_reg; - + rtx set = single_set (u->insn); + + /* Skip instructions that do not set a register. */ + if ((set && !REG_P (SET_DEST (set)))) + continue; + /* Compute the number of reg_moves needed for u, by looking at life ranges started at u (excluding self-loops). */ for (e = u->out; e; e = e->next_out) @@ -493,6 +498,16 @@ generate_reg_moves (partial_schedule_ptr ps, bool rescan) && SCHED_COLUMN (e->dest) < SCHED_COLUMN (e->src)) nreg_moves4e--; + if (nreg_moves4e >= 1) + { + /* !single_set instructions are not supported yet and + thus we do not except to encounter them in the loop + except from the doloop part. For the latter case + we assume no regmoves are generated as the doloop + instructions are tied to the branch with an edge. */ + gcc_assert (set); + } + nreg_moves = MAX (nreg_moves, nreg_moves4e); } |