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Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: 20
Affects Version/s: 19, 20
Component/s: hotspot
Labels:
- c2
- performance

Subcomponent:
compiler
Resolved In Build:
b07
CPU:

generic
OS:

generic

Math.min/max operations are not auto-vectorized by default for integers.
C2 generates the cmp-csel instructions for Math.min/max but they can be auto-vectorized to generate the smin/smax instructions on aarch64, vpmaxsd/vpminsd on x86.

relates to

JDK-8290730 compiler/vectorization/TestAutoVecIntMinMax.java failed with "IRViolationException: There were one or multiple IR rule failures."

Closed

JDK-8294816 C2: Math.min/max vectorization miscompilation

Closed

JDK-8290248 Implement MaxINode::Ideal transformation

Resolved

links to

Commit openjdk/jdk/89458e36

Review openjdk/jdk/9466

Assignee:: Stuart Monteith

Reporter:: Stuart Monteith

Votes:: 0 Vote for this issue

Watchers:: 4 Start watching this issue

Created:: 2022-06-09 04:08

Updated:: 2022-10-05 05:29

Resolved:: 2022-07-20 08:40

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