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| author | Feng Xue <fxue@os.amperecomputing.com> | 2019-09-17 12:30:08 +0000 |
|---|---|---|
| committer | Feng Xue <fxue@gcc.gnu.org> | 2019-09-17 12:30:08 +0000 |
| commit | 351e7c3b5fbd45bde3efb601f7fee9a31c4f2063 (patch) | |
| tree | a8c77dee290a445c6d2f16f5b66fa8ea260824b0 /gcc/doc/invoke.texi | |
| parent | c4ccdc0e63150d1cab2686a16dafeb7520315cb2 (diff) | |
| download | gcc-351e7c3b5fbd45bde3efb601f7fee9a31c4f2063.zip gcc-351e7c3b5fbd45bde3efb601f7fee9a31c4f2063.tar.gz gcc-351e7c3b5fbd45bde3efb601f7fee9a31c4f2063.tar.bz2 | |
PR ipa/91089 - Setup predicate for switch default case in IPA
2019-09-17 Feng Xue <fxue@os.amperecomputing.com>
PR ipa/91089
* doc/invoke.texi (ipa-max-switch-predicate-bounds): Document new
option.
* params.def (PARAM_IPA_MAX_SWITCH_PREDICATE_BOUNDS): New.
* ipa-fnsummary.c (set_switch_stmt_execution_predicate): Add predicate
for switch default case using range analysis information.
2019-09-17 Feng Xue <fxue@os.amperecomputing.com>
PR ipa/91089
* gcc.dg/ipa/pr91089.c: New test.
From-SVN: r275802
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index fe5cf35..0e36935 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -11937,6 +11937,12 @@ not spend too much time analyzing huge functions, it gives up and consider all memory clobbered after examining @option{ipa-max-aa-steps} statements modifying memory. +@item ipa-max-switch-predicate-bounds +Maximal number of boundary endpoints of case ranges of switch statement. +For switch exceeding this limit, IPA-CP will not construct cloning cost +predicate, which is used to estimate cloning benefit, for default case +of the switch statement. + @item lto-partitions Specify desired number of partitions produced during WHOPR compilation. The number of partitions should exceed the number of CPUs used for compilation. |