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| author | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-11-02 16:34:52 +0000 |
|---|---|---|
| committer | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-11-02 16:34:52 +0000 |
| commit | 72276d01ede840f437b084eb0f89495f0d69f49f (patch) | |
| tree | f422408bb685a50d53e449a1a6c13e851119cfe9 /gcc/testsuite/gcc.dg/tree-ssa/cunroll-9.c | |
| parent | b73e53043ae7c29b715538961c8af71e22727585 (diff) | |
| download | gcc-72276d01ede840f437b084eb0f89495f0d69f49f.tar.gz | |
PR middle-end/55079
* tree-ssa-loop-niter.c (number_of_iterations_exit): Update
MAX field if NITER was folded to contant.
(record_estimate): Sanity check.
* tree-ssa-loop-ivcanon.c (remove_exits_and_undefined_stmts): New
function.
(remove_redundant_iv_test): New function.
(loops_to_unloop, loops_to_unloop_nunroll): New static vars.
(unloop_loops): Break out from ...
(try_unroll_loop_completely): ... here; Pass in MAXITER; use
remove_exits_and_undefined_stmts; do not unloop.
(canonicalize_loop_induction_variables): Compute MAXITER;
use remove_redundant_iv_test; remove loop_close_ssa_invalidated
and irred_invalidated arguments.
(canonicalize_induction_variables): Compute fresh bound estimates;
unloop; walk from innermost.
(tree_unroll_loops_completely): Likewise.
* gcc.dg/tree-ssa/cunroll-10.c: New testcase.
* gcc.dg/tree-ssa/cunroll-9.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@193098 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/cunroll-9.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/cunroll-9.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/cunroll-9.c b/gcc/testsuite/gcc.dg/tree-ssa/cunroll-9.c new file mode 100644 index 00000000000..3205b8d3965 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/cunroll-9.c @@ -0,0 +1,22 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-cunrolli" } */ +void abort (void); +int a[10]; +int b[11]; +t (int n) +{ + int i; + int sum = 0; + for (i = 0; i < n; i++) + { + if (i > 1000) + abort (); + if (q ()) + sum += a[i]; + else + sum += b[i]; + } + return sum; +} +/* { dg-final { scan-tree-dump-times 1 "Removed pointless exit:" "cunroli" } } */ +/* { dg-final { cleanup-tree-dump "cunroli" } } */ |