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| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2019-11-14 16:40:33 +0000 |
|---|---|---|
| committer | Ilya Leoshkevich <iii@gcc.gnu.org> | 2019-11-14 16:40:33 +0000 |
| commit | d19df8b22998766fec1d3c3af055639ba2d172e5 (patch) | |
| tree | fbaddaa1fab9ae6d15d69396418c2cc093296c45 | |
| parent | 27204060db51ed0637e394dff387c66c6b944726 (diff) | |
| download | gcc-d19df8b22998766fec1d3c3af055639ba2d172e5.zip gcc-d19df8b22998766fec1d3c3af055639ba2d172e5.tar.gz gcc-d19df8b22998766fec1d3c3af055639ba2d172e5.tar.bz2 | |
Make flag_thread_jumps a gate of pass_jump_after_combine
This is a follow-up to
https://gcc.gnu.org/ml/gcc-patches/2019-11/msg00919.html (r278095).
Dominance info is deleted even if we don't perform jump threading.
Since the whole point of this pass is to perform jump threading (other
cleanups are not valuable at this point), skip it completely when
flag_thread_jumps is not set.
gcc/ChangeLog:
2019-11-14 Ilya Leoshkevich <iii@linux.ibm.com>
PR rtl-optimization/92430
* cfgcleanup.c (pass_jump_after_combine::gate): New function.
(pass_jump_after_combine::execute): Perform jump threading
unconditionally.
From-SVN: r278254
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/cfgcleanup.c | 3 |
2 files changed, 9 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7140f5a..051b10e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2019-11-14 Ilya Leoshkevich <iii@linux.ibm.com> + + PR rtl-optimization/92430 + * cfgcleanup.c (pass_jump_after_combine::gate): New function. + (pass_jump_after_combine::execute): Perform jump threading + unconditionally. + 2019-11-14 Jerome Lambourg <lambourg@adacore.com> Doug Rupp <rupp@adacore.com> Olivier Hainque <hainque@adacore.com> diff --git a/gcc/cfgcleanup.c b/gcc/cfgcleanup.c index 7f38825..f1d421b 100644 --- a/gcc/cfgcleanup.c +++ b/gcc/cfgcleanup.c @@ -3304,6 +3304,7 @@ public: {} /* opt_pass methods: */ + virtual bool gate (function *) { return flag_thread_jumps; } virtual unsigned int execute (function *); }; // class pass_jump_after_combine @@ -3313,7 +3314,7 @@ pass_jump_after_combine::execute (function *) { /* Jump threading does not keep dominators up-to-date. */ free_dominance_info (CDI_DOMINATORS); - cleanup_cfg (flag_thread_jumps ? CLEANUP_THREADING : 0); + cleanup_cfg (CLEANUP_THREADING); return 0; } |