[JDK-6443505] Ideal() function for CmpLTMask - Java Bug System

Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: hs25
Affects Version/s: 6
Component/s: hotspot
Labels:

Subcomponent:
compiler
Resolved In Build:
b29
CPU:

generic
OS:

generic

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8013667	8	David Chase	P4	Resolved	Fixed	b88
JDK-8018323	7u45	David Chase	P4	Closed	Fixed	b01
JDK-8013985	7u40	David Chase	P4	Resolved	Fixed	b24
JDK-8013107	hs24	David Chase	P4	Resolved	Fixed	b42

While investigating 6317170, it was noted that the CmpLTMask node could profit from a Ideal() function which transforms (CmpLTMask (SubI x y) 0) into (CmpLTMask x y).

Small improvements in 201_compress are expected.

backported by

JDK-8013107 Ideal() function for CmpLTMask

Resolved

JDK-8013667 Ideal() function for CmpLTMask

Resolved

JDK-8013985 Ideal() function for CmpLTMask

Resolved

JDK-8018323 Ideal() function for CmpLTMask

Closed

relates to

JDK-6317170 C2 matcher fails on CmpLTMask in JapaneseImperialCalendar.getActualMinimum

Resolved

Assignee:: David Chase (Inactive)

Reporter:: Chuck Rasbold

Votes:: 0 Vote for this issue

Watchers:: 2 Start watching this issue

Created:: 2006-06-26 11:45

Updated:: 2013-06-25 22:10

Resolved:: 2013-04-12 21:33

Imported:: 17/Sep/12 12:18 AM

Indexed:: 19/Jul/12 5:50 PM

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