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Type: Enhancement
Resolution: Fixed
Priority: P3
Fix Version/s: 9
Affects Version/s: 9
Component/s: hotspot
Labels:
None

Subcomponent:
compiler
Resolved In Build:
b120
CPU:

x86
OS:

generic

This is the performance based implementation of the of the two part pair, for which Multiversioning for range check elimination was the first part. This part implements masked vectorization for fully enabled EVEX x86/x64 targets.

Tested as follows:

SpecJvm2008 windows: HSW(64/32 bit): SKX(64/32 bit) : KNL (64/32 bit)
linux: SKX(64-bit)

jtreg: windows: HSW(64/32 bit) , skx(64/32-bit)

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Micros.tar
20 kB
2016-04-13 13:49
Micros.tar
20 kB
2016-04-12 22:00
OpenJDK_LoopOps_Intro_voiceonly.pptx
3.66 MB
2016-05-03 13:25
OpenJDK_LoopOps_Intro_voiceonly.pptx
29 kB
2016-05-03 12:58

relates to

JDK-8183390 Fix and re-enable post loop vectorization

Resolved

JDK-8308949 C2 SuperWord: assert(vmask != nullptr) failed: vector mask should be generated

Closed

JDK-8183103 Post loop vectorization produces incorrect results

Closed

JDK-8183319 Post loop vectorization fails with "Error mixing types: int and vectorz"

Closed

JDK-8247838 PostLoopMultiversioning is broken and generates incorrect result

Closed

JDK-8301657 Fix post loop vectorization with parallel loop iv

Closed

JDK-8301904 Incorrect post loop vectorization when IV is converted to long

Closed

JDK-8301944 assert(cmp == __null) failed: A cmp with 2 OpaqueZeroTripGuard inputs with -XX:+PostLoopMultiversioning

Closed

JDK-8308994 C2: Re-implement experimental post loop vectorization

In Progress

JDK-8151573 Multiversioning for range check elimination

Resolved

(5 relates to)

Assignee:: Michael Berg (Inactive)

Reporter:: Michael Berg (Inactive)

Votes:: 0 Vote for this issue

Watchers:: 3 Start watching this issue

Due:: 2016-04-18

Created:: 2016-04-11 08:54

Updated:: 2023-05-28 19:40

Resolved:: 2016-04-18 16:19

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