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| author | Feng Xue <fxue@os.amperecomputing.com> | 2019-11-07 15:43:01 +0000 |
|---|---|---|
| committer | Feng Xue <fxue@gcc.gnu.org> | 2019-11-07 15:43:01 +0000 |
| commit | 095f78c62157124ad479a3f98b6995ced090b807 (patch) | |
| tree | c923adca9e7c669cc0ba77cd8fe7c525094b99ff /gcc/tree.c | |
| parent | 163f23d21e5f2faee08163f2dcb363042b53ee1e (diff) | |
| download | gcc-095f78c62157124ad479a3f98b6995ced090b807.zip gcc-095f78c62157124ad479a3f98b6995ced090b807.tar.gz gcc-095f78c62157124ad479a3f98b6995ced090b807.tar.bz2 | |
Loop split on semi-invariant conditional statement
2019-11-07 Feng Xue <fxue@os.amperecomputing.com>
PR tree-optimization/89134
* doc/invoke.texi (min-loop-cond-split-prob): Document new --params.
* params.def: Add min-loop-cond-split-prob.
* tree-ssa-loop-split.c (split_loop): Remove niter parameter, move some
outside checks on loop into the function.
(split_info): New class.
(find_vdef_in_loop, get_control_equiv_head_block): New functions.
(find_control_dep_blocks, vuse_semi_invariant_p): Likewise.
(ssa_semi_invariant_p, loop_iter_phi_semi_invariant_p): Likewise.
(control_dep_semi_invariant_p, stmt_semi_invariant_p_1): Likewise.
(stmt_semi_invariant_p, branch_removable_p): Likewise.
(get_cond_invariant_branch, compute_added_num_insns): Likewise.
(get_cond_branch_to_split_loop, do_split_loop_on_cond): Likewise.
(split_loop_on_cond): Likewise.
(tree_ssa_split_loops): Add loop split on conditional statement.
2019-11-07 Feng Xue <fxue@os.amperecomputing.com>
PR tree-optimization/89134
* gcc.dg/tree-ssa/loop-cond-split-1.c: New test.
* g++.dg/tree-ssa/loop-cond-split-1.C: New test.
* gcc.dg/torture/pr55107.c: Add -fno-split-loops.
From-SVN: r277923
Diffstat (limited to 'gcc/tree.c')
0 files changed, 0 insertions, 0 deletions