archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-21 03:24:38 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

5091921: Sign flip issues in loop optimizer

Browse source 
Fix integer overflow problem in the code generated by loop optimizer.

Reviewed-by: never
This commit is contained in:
Vladimir Kozlov 2011-05-04 13:12:42 -07:00
parent 1e12174562
commit 1ac79543d0
40 changed files with 4195 additions and 214 deletions
Download patch file Download diff file Expand all files Collapse all files

3
hotspot/src/share/vm/runtime/deoptimization.hpp
View file

@ -56,6 +56,7 @@ class Deoptimization : AllStatic {
Reason_div0_check, // a null_check due to division by zero
Reason_age, // nmethod too old; tier threshold reached
Reason_predicate, // compiler generated predicate failed
Reason_loop_limit_check, // compiler generated loop limits check failed
Reason_LIMIT,
// Note: Keep this enum in sync. with _trap_reason_name.
Reason_RECORDED_LIMIT = Reason_bimorphic // some are not recorded per bc
@ -78,7 +79,7 @@ class Deoptimization : AllStatic {
enum {
_action_bits = 3,
_reason_bits = 4,
_reason_bits = 5,
_action_shift = 0,
_reason_shift = _action_shift+_action_bits,
BC_CASE_LIMIT = PRODUCT_ONLY(1) NOT_PRODUCT(4) // for _deoptimization_hist