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| author | Richard Guenther <rguenther@suse.de> | 2012-09-05 13:29:13 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2012-09-05 13:29:13 +0000 |
| commit | 18eb76ebfa25806dab9a23e726f1d8f914c51630 (patch) | |
| tree | 6a4da24f3eeac38fb070a1b1006f7948c7c1d8c3 /gcc/tree-ssa-loop-ivcanon.c | |
| parent | e124e65f35b41bf118766d910bc307db160f3073 (diff) | |
| download | gcc-18eb76ebfa25806dab9a23e726f1d8f914c51630.zip gcc-18eb76ebfa25806dab9a23e726f1d8f914c51630.tar.gz gcc-18eb76ebfa25806dab9a23e726f1d8f914c51630.tar.bz2 | |
re PR tree-optimization/46590 (long compile time with -O2 and many loops)
2012-09-05 Richard Guenther <rguenther@suse.de>
PR tree-optimization/46590
* tree-ssa-loop-ivcanon.c (try_unroll_loop_completely): Do not
update SSA form here.
(canonicalize_induction_variables): Assert we do not need to
update SSA form.
(tree_unroll_loops_completely): Update SSA form here.
* tree-ssa-loop-manip.c (gimple_duplicate_loop_to_header_edge):
Do not verify loop-closed SSA form if SSA form is not up-to-date.
From-SVN: r190978
Diffstat (limited to 'gcc/tree-ssa-loop-ivcanon.c')
| -rw-r--r-- | gcc/tree-ssa-loop-ivcanon.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/tree-ssa-loop-ivcanon.c b/gcc/tree-ssa-loop-ivcanon.c index 48fd3f4..e1584b4 100644 --- a/gcc/tree-ssa-loop-ivcanon.c +++ b/gcc/tree-ssa-loop-ivcanon.c @@ -414,7 +414,6 @@ try_unroll_loop_completely (struct loop *loop, else gimple_cond_make_false (cond); update_stmt (cond); - update_ssa (TODO_update_ssa); if (dump_file && (dump_flags & TDF_DETAILS)) fprintf (dump_file, "Unrolled loop %d completely.\n", loop->num); @@ -493,6 +492,7 @@ canonicalize_induction_variables (void) true, UL_SINGLE_ITER, true); } + gcc_assert (!need_ssa_update_p (cfun)); /* Clean up the information about numbers of iterations, since brute force evaluation could reveal new information. */ @@ -536,6 +536,8 @@ tree_unroll_loops_completely (bool may_increase_size, bool unroll_outer) if (changed) { + update_ssa (TODO_update_ssa); + /* This will take care of removing completely unrolled loops from the loop structures so we can continue unrolling now innermost loops. */ |