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Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: 23
Affects Version/s: 21, 23
Component/s: hotspot
Labels:
- c2
- jdk21u-todo

Subcomponent:
compiler
Resolved In Build:
b16

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8348300	21.0.7-oracle	Damon Fenacci	P4	Resolved	Fixed	b03

The code patterns "a > b ? a : b" and "if (a > b) b = a" are fairly common in Java code. Currently, the compiler doesn't transform these patterns into minimum and maximum nodes, but such a transformation would compact the IR and allow for other optimizations, such as vectorization.

backported by

JDK-8348300 Identify integer minimum and maximum patterns created with if statements

Resolved

relates to

JDK-8329797 Shenandoah: Default case invoked for: "MaxL" (bad AD file)

Resolved

JDK-8343944 C2: MinLNode::add_ring() computes _widen wrongly leading to an endless widening/compilation

Resolved

JDK-8347515 C2: assert(!success || (C->macro_count() == (old_macro_count - 1))) failed: elimination must have deleted one node from macro list

Resolved

JDK-8329355 Test compiler/c2/irTests/TestIfMinMax.java fails on RISC-V

Resolved

JDK-8329531 compiler/c2/irTests/TestIfMinMax.java fails with IRViolationException: There were one or multiple IR rule failures.

Resolved

JDK-8329807 Shenandoah: Temporarily revert JDK-8324655

Resolved

JDK-8039104 Don't use Math.min/max intrinsic on x86

In Progress

links to

Commit openjdk/jdk/9f920b9b

Review openjdk/jdk/17574

(3 relates to, 2 links to)

Assignee:: Jasmine Karthikeyan
Reporter:: Jasmine Karthikeyan
Votes:: 0 Vote for this issue
Watchers:: 5 Start watching this issue

Created:: 2024-01-24 10:01
Updated:: 2025-02-27 01:19
Resolved:: 2024-03-24 23:25

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