diff options
Diffstat (limited to 'gcc/loop-doloop.c')
| -rw-r--r-- | gcc/loop-doloop.c | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/gcc/loop-doloop.c b/gcc/loop-doloop.c index 1833954595f..dcc20b191ad 100644 --- a/gcc/loop-doloop.c +++ b/gcc/loop-doloop.c @@ -334,14 +334,11 @@ add_test (rtx cond, edge *e, basic_block dest) describes the loop, DESC describes the number of iterations of the loop, and DOLOOP_INSN is the low-overhead looping insn to emit at the end of the loop. CONDITION is the condition separated from the - DOLOOP_SEQ. COUNT is the number of iterations of the LOOP. - ZERO_EXTEND_P says to zero extend COUNT after the increment of it to - word_mode from FROM_MODE. */ + DOLOOP_SEQ. COUNT is the number of iterations of the LOOP. */ static void doloop_modify (struct loop *loop, struct niter_desc *desc, - rtx doloop_seq, rtx condition, rtx count, - bool zero_extend_p, enum machine_mode from_mode) + rtx doloop_seq, rtx condition, rtx count) { rtx counter_reg; rtx tmp, noloop = NULL_RTX; @@ -415,11 +412,7 @@ doloop_modify (struct loop *loop, struct niter_desc *desc, } if (increment_count) - count = simplify_gen_binary (PLUS, from_mode, count, const1_rtx); - - if (zero_extend_p) - count = simplify_gen_unary (ZERO_EXTEND, word_mode, - count, from_mode); + count = simplify_gen_binary (PLUS, mode, count, const1_rtx); /* Insert initialization of the count register into the loop header. */ start_sequence (); @@ -555,7 +548,6 @@ doloop_optimize (struct loop *loop) struct niter_desc *desc; unsigned word_mode_size; unsigned HOST_WIDE_INT word_mode_max; - bool zero_extend_p = false; if (dump_file) fprintf (dump_file, "Doloop: Processing loop %d.\n", loop->num); @@ -630,7 +622,8 @@ doloop_optimize (struct loop *loop) { if (word_mode_size > GET_MODE_BITSIZE (mode)) { - zero_extend_p = true; + count = simplify_gen_unary (ZERO_EXTEND, word_mode, + count, mode); iterations = simplify_gen_unary (ZERO_EXTEND, word_mode, iterations, mode); iterations_max = simplify_gen_unary (ZERO_EXTEND, word_mode, @@ -674,8 +667,7 @@ doloop_optimize (struct loop *loop) return false; } - doloop_modify (loop, desc, doloop_seq, condition, count, - zero_extend_p, mode); + doloop_modify (loop, desc, doloop_seq, condition, count); return true; } |