diff options
Diffstat (limited to 'gcc/cfgloopmanip.c')
| -rw-r--r-- | gcc/cfgloopmanip.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/gcc/cfgloopmanip.c b/gcc/cfgloopmanip.c index 8a44a0b6f..97a90bbff 100644 --- a/gcc/cfgloopmanip.c +++ b/gcc/cfgloopmanip.c @@ -37,7 +37,6 @@ static int find_path (edge, basic_block **); static void fix_loop_placements (struct loop *, bool *); static bool fix_bb_placement (basic_block); static void fix_bb_placements (basic_block, bool *); -static void unloop (struct loop *, bool *); /* Checks whether basic block BB is dominated by DATA. */ static bool @@ -895,7 +894,7 @@ loopify (edge latch_edge, edge header_edge, If this may cause the information about irreducible regions to become invalid, IRRED_INVALIDATED is set to true. */ -static void +void unloop (struct loop *loop, bool *irred_invalidated) { basic_block *body; @@ -971,6 +970,20 @@ fix_loop_placements (struct loop *loop, bool *irred_invalidated) } } +/* Duplicate loop bounds and other information we store about + the loop into its duplicate. */ + +void +copy_loop_info (struct loop *loop, struct loop *target) +{ + gcc_checking_assert (!target->any_upper_bound && !target->any_estimate); + target->any_upper_bound = loop->any_upper_bound; + target->nb_iterations_upper_bound = loop->nb_iterations_upper_bound; + target->any_estimate = loop->any_estimate; + target->nb_iterations_estimate = loop->nb_iterations_estimate; + target->estimate_state = loop->estimate_state; +} + /* Copies copy of LOOP as subloop of TARGET loop, placing newly created loop into loops structure. */ struct loop * @@ -979,6 +992,8 @@ duplicate_loop (struct loop *loop, struct loop *target) struct loop *cloop; cloop = alloc_loop (); place_new_loop (cloop); + + copy_loop_info (loop, cloop); /* Mark the new loop as copy of LOOP. */ set_loop_copy (loop, cloop); @@ -1687,6 +1702,8 @@ loop_version (struct loop *loop, false /* Do not redirect all edges. */, then_scale, else_scale); + copy_loop_info (loop, nloop); + /* loopify redirected latch_edge. Update its PENDING_STMTS. */ lv_flush_pending_stmts (latch_edge); |