diff options
| author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-05-19 17:37:45 +0000 |
|---|---|---|
| committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-05-19 17:37:45 +0000 |
| commit | 09c7ce539539dc7a0460973b63b269c71b527379 (patch) | |
| tree | 4a838115d14ebe93303016d8ff822904c206b25c /gcc/loop-invariant.c | |
| parent | 9b85291b9675e17f8401b1a9d928709b670c49a9 (diff) | |
| download | gcc-09c7ce539539dc7a0460973b63b269c71b527379.tar.gz | |
2015-05-19 David Sherwood <david.sherwood@arm.com>
* loop-invariant.c (create_new_invariant): Don't calculate address cost
if mode is not a scalar integer.
(get_inv_cost): Increase computational cost for unused invariants.
* gcc.dg/loop-invariant.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223402 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/loop-invariant.c')
| -rw-r--r-- | gcc/loop-invariant.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/gcc/loop-invariant.c b/gcc/loop-invariant.c index 1c3eae5e965..85270fe14bc 100644 --- a/gcc/loop-invariant.c +++ b/gcc/loop-invariant.c @@ -741,8 +741,11 @@ create_new_invariant (struct def *def, rtx_insn *insn, bitmap depends_on, enough to not regress 410.bwaves either (by still moving reg+reg invariants). See http://gcc.gnu.org/ml/gcc-patches/2009-10/msg01210.html . */ - inv->cheap_address = address_cost (SET_SRC (set), word_mode, - ADDR_SPACE_GENERIC, speed) < 3; + if (SCALAR_INT_MODE_P (GET_MODE (SET_DEST (set)))) + inv->cheap_address = address_cost (SET_SRC (set), word_mode, + ADDR_SPACE_GENERIC, speed) < 3; + else + inv->cheap_address = false; } else { @@ -1173,6 +1176,7 @@ get_inv_cost (struct invariant *inv, int *comp_cost, unsigned *regs_needed, } if (!inv->cheap_address + || inv->def->n_uses == 0 || inv->def->n_addr_uses < inv->def->n_uses) (*comp_cost) += inv->cost * inv->eqno; |