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| author | Jan Hubicka <jh@suse.cz> | 2012-11-06 17:22:45 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2012-11-06 16:22:45 +0000 |
| commit | 519cac4a7a6ca5a2e4871bb05f3a4c85426e8248 (patch) | |
| tree | f6fbb89a772fc389ce8c8e8e32cde9cbd8d3a80a /gcc/params.def | |
| parent | 425b784f2c51079216d60b3e6a921470408326f6 (diff) | |
| download | gcc-519cac4a7a6ca5a2e4871bb05f3a4c85426e8248.zip gcc-519cac4a7a6ca5a2e4871bb05f3a4c85426e8248.tar.gz gcc-519cac4a7a6ca5a2e4871bb05f3a4c85426e8248.tar.bz2 | |
cfgloopanal.c (get_loop_hot_path): New function.
* cfgloopanal.c (get_loop_hot_path): New function.
* tree-ssa-lop-ivcanon.c (struct loop_size): Add CONSTANT_IV,
NUM_NON_PURE_CALLS_ON_HOT_PATH, NUM_PURE_CALLS_ON_HOT_PATH,
NUM_BRANCHES_ON_HOT_PATH.
(tree_estimate_loop_size): Compute the new values.
(try_unroll_loop_completely): Disable unrolling of loops with only
calls or too many branches.
(tree_unroll_loops_completely): Deal also with outer loops of hot loops.
* cfgloop.h (get_loop_hot_path): Declare.
* params.def (PARAM_MAX_PEEL_BRANCHES): New parameters.
* invoke.texi (max-peel-branches): Document.
* gcc.dg/tree-ssa/loop-1.c: Make to look like a good unroling candidate still.
* gcc.dg/tree-ssa/loop-23.c: Likewise.
* gcc.dg/tree-ssa/cunroll-1.c: Unrolling now happens early.
* gcc.dg/tree-prof/unroll-1.c: Remove confused dg-options.
From-SVN: r193246
Diffstat (limited to 'gcc/params.def')
| -rw-r--r-- | gcc/params.def | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/params.def b/gcc/params.def index 8733f1b..0ceb8a2 100644 --- a/gcc/params.def +++ b/gcc/params.def @@ -291,6 +291,11 @@ DEFPARAM(PARAM_MAX_PEEL_TIMES, "max-peel-times", "The maximum number of peelings of a single loop", 16, 0, 0) +/* The maximum number of peelings of a single loop that is peeled completely. */ +DEFPARAM(PARAM_MAX_PEEL_BRANCHES, + "max-peel-branches", + "The maximum number of branches on the path through the peeled sequence", + 32, 0, 0) /* The maximum number of insns of a peeled loop. */ DEFPARAM(PARAM_MAX_COMPLETELY_PEELED_INSNS, "max-completely-peeled-insns", |