diff options
| author | Sebastian Pop <sebastian.pop@amd.com> | 2010-03-31 18:37:13 +0000 |
|---|---|---|
| committer | Sebastian Pop <spop@gcc.gnu.org> | 2010-03-31 18:37:13 +0000 |
| commit | c80a540338e5809cdf058b13e23e30585219a0fa (patch) | |
| tree | 031cf7376f126a24b28052c5fb0f4f308cc6b474 /gcc/tree-ssa-loop-manip.c | |
| parent | caaf41d0e86fc020b5a8f0a1a8b6a89d23a07522 (diff) | |
| download | gcc-c80a540338e5809cdf058b13e23e30585219a0fa.tar.gz | |
canonicalize_loop_ivs should add the IV bump in loop->header.
2010-03-16 Sebastian Pop <sebastian.pop@amd.com>
* graphite-sese-to-poly.c (graphite_loop_normal_form): Add the IV bump
in loop->header.
* tree-flow.h (canonicalize_loop_ivs): Updated declaration.
* tree-parloops.c (gen_parallel_loop): Add the IV bump in loop->latch.
* tree-ssa-loop-manip.c (canonicalize_loop_ivs): Add a new parameter
to switch between adding the IV bump in loop->latch or in loop->header.
From-SVN: r157885
Diffstat (limited to 'gcc/tree-ssa-loop-manip.c')
| -rw-r--r-- | gcc/tree-ssa-loop-manip.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/gcc/tree-ssa-loop-manip.c b/gcc/tree-ssa-loop-manip.c index 7c54c87e74f..7818f5b4f1a 100644 --- a/gcc/tree-ssa-loop-manip.c +++ b/gcc/tree-ssa-loop-manip.c @@ -1181,11 +1181,13 @@ rewrite_all_phi_nodes_with_iv (loop_p loop, tree main_iv) compared with *NIT. When the IV type precision has to be larger than *NIT type precision, *NIT is converted to the larger type, the conversion code is inserted before the loop, and *NIT is updated to - the new definition. The induction variable is incremented in the - loop latch. Return the induction variable that was created. */ + the new definition. When BUMP_IN_LATCH is true, the induction + variable is incremented in the loop latch, otherwise it is + incremented in the loop header. Return the induction variable that + was created. */ tree -canonicalize_loop_ivs (struct loop *loop, tree *nit) +canonicalize_loop_ivs (struct loop *loop, tree *nit, bool bump_in_latch) { unsigned precision = TYPE_PRECISION (TREE_TYPE (*nit)); unsigned original_precision = precision; @@ -1215,9 +1217,9 @@ canonicalize_loop_ivs (struct loop *loop, tree *nit) gsi_insert_seq_on_edge_immediate (loop_preheader_edge (loop), stmts); } - gsi = gsi_last_bb (loop->latch); + gsi = gsi_last_bb (bump_in_latch ? loop->latch : loop->header); create_iv (build_int_cst_type (type, 0), build_int_cst (type, 1), NULL_TREE, - loop, &gsi, true, &var_before, NULL); + loop, &gsi, bump_in_latch, &var_before, NULL); rewrite_all_phi_nodes_with_iv (loop, var_before); |