diff options
| author | Joseph Myers <joseph@codesourcery.com> | 2011-12-02 16:54:27 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2011-12-02 16:54:27 +0000 |
| commit | 669183e0f9682951f40596178758a4ebc22320d7 (patch) | |
| tree | 20d093eb4b91c136b0ac7c9be852a2dab1f0d03c /gcc/loop-doloop.c | |
| parent | 75f8eda891e289c0712a26d63eb0d7a064aa2b54 (diff) | |
Revert:
2008-09-18 Andrew Pinski <andrew_pinski@playstation.sony.com>
PR rtl-opt/37451
* loop-doloop.c (doloop_modify): New argument zero_extend_p and
zero extend count after the correction to it is done.
(doloop_optimize): Update call to doloop_modify, don't zero extend
count before call.
2008-11-03 Andrew Pinski <andrew_pinski@playstation.sony.com>
PR rtl-opt/37782
* loop-doloop.c (doloop_modify): Add from_mode argument that says what
mode count is in.
(doloop_optimize): Update call to doloop_modify.
testsuite:
* gcc.c-torture/execute/doloop-1.c,
gcc.c-torture/execute/doloop-2.c: New tests.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@181929 138bc75d-0d04-0410-961f-82ee72b054a4
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 a7e264f2c8d..5f645694107 100644 --- a/gcc/loop-doloop.c +++ b/gcc/loop-doloop.c @@ -394,14 +394,11 @@ 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; @@ -475,11 +472,7 @@ 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 (); @@ -615,7 +608,6 @@ 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); @@ -690,7 +682,8 @@ doloop_optimize (struct loop *loop) { if (word_mode_size > GET_MODE_PRECISION (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, @@ -734,8 +727,7 @@ 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; } |