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20 Commits

Author SHA1 Message Date
Roland Westrelin
3d460bd295 8256655: rework long counted loop handling 
Reviewed-by: kvn, thartmann, vlivanov
 2020-12-01 07:30:51 +00:00
Roland Westrelin
a7422ac2f4 8255150: Add utility methods to check long indexes and ranges 
Co-authored-by: Paul Sandoz <psandoz@openjdk.org>
Reviewed-by: jvernee, dlong, vlivanov
 2020-11-17 10:37:27 +00:00
Tobias Hartmann
15805741f1 8255672: Replace PhaseTransform::eqv by pointer equality check 
Reviewed-by: chagedorn, redestad, kvn
 2020-11-03 07:17:58 +00:00
Roberto Castaneda Lozano
f3ea0d362f 8252583: Clean up unused phi-to-copy degradation mechanism 
Remove unused notion of 'PhiNode-to-copy degradation', where PhiNodes can be
degraded to copies by setting their RegionNode to NULL. Remove corresponding
PhiNode::is_copy() test, which always returned NULL (false). Assert that
PhiNodes have an associated RegionNode in PhiNode::Ideal().

Reviewed-by: thartmann, kvn
 2020-09-24 08:10:56 +00:00
Boris Ulasevich
6d137a3616 8248043: Need to eliminate excessive i2l conversions 
Reviewed-by: redestad, kvn, iveresov
 2020-07-06 04:44:25 -04:00
Boris Ulasevich
48c0ce3b4b 8247408: IdealGraph bit check expression canonicalization 
Reviewed-by: aph, kvn, adinn
 2020-06-29 07:26:10 -04:00
Eric Liu
babaab2edb 8242429: Better implementation for sign extract 
Reviewed-by: vlivanov, thartmann
 2020-05-12 10:19:01 +08:00
Roland Westrelin
52d46c314b 8238691: C2: turn subtype check into macro node 
Reviewed-by: vlivanov, thartmann
 2020-02-14 10:31:34 +01:00
Christian Hagedorn
316985c85c 8220416: Comparison of klass pointers is not optimized any more 
Enables dead klass pointer optimization (since JDK-6964458) again.

Reviewed-by: roland, thartmann
 2019-09-12 12:23:25 +02:00
Patric Hedlin
f4faee7bae 8223140: Clean-up in 'ok_to_convert()' 
Simplify logic in function. Added precond/postcond macros.

Reviewed-by: vlivanov, neliasso
 2019-04-17 14:55:11 +02:00
Derek Thomson
7a4b473edd 8157372: C2: Node::cmp() should return bool 
The method Node::cmp() should return a boolean

Reviewed-by: vlivanov, kvn
 2019-03-28 11:06:00 -07:00
Roland Westrelin
b4c401fa37 8212611: Small collection of simple changes from shenandoah 
Reviewed-by: thartmann, kvn, eosterlund
 2018-10-17 10:19:13 +02:00
Tobias Hartmann
6b83ac96ab 8210215: C2 should optimize trichotomy calculations 
Ideal transformation to optimize trichotomic comparisons.

Reviewed-by: kvn, jrose
 2018-10-16 14:17:19 +02:00
Pengfei Li
dd4961b5aa 8210152: Optimize integer divisible by power-of-2 check 
Integer conditional negation operation before zero check is eliminated

Reviewed-by: kvn, thartmann
 2018-09-25 14:16:33 +02:00
Roland Westrelin
052a740695 8209544: AES encrypt performance regression in jdk11b11 
Reviewed-by: kvn, vlivanov
 2018-09-06 16:27:07 +02:00
Erik Österlund
ce61e39060 8208601: Introduce native oop barriers in C2 for OopHandle 
Reviewed-by: neliasso, kvn
 2018-08-22 13:06:33 +02:00
Coleen Phillimore
1ee531afe9 8200555: OopHandle should use Access API 
Add RootAccess<> to OopHandle.resolve() in runtime and interpreter code.  Add comments for compiler code for later.

Reviewed-by: eosterlund, stefank
 2018-04-18 10:39:40 -04:00
Razvan Lupusoru
9b6a428212 8190800: Support vectorization of Math.sqrt() on floats 
Reviewed-by: vlivanov, kvn
 2017-11-22 14:43:37 +03:00
Coleen Phillimore
73a801bc43 8186777: Make Klass::_java_mirror an OopHandle 
Add indirection for fetching mirror so that GC doesn't have to follow CLD::_klasses

Co-authored-by: Rickard Backman <rickard.backman@oracle.com>
Reviewed-by: hseigel, thartmann, eosterlund, stefank
 2017-10-03 16:42:04 -04:00
Erik Joelsson
3789983e89 8187443: Forest Consolidation: Move files to unified layout 
Reviewed-by: darcy, ihse
 2017-09-12 19:03:39 +02:00