Christian Hagedorn

8291775: C2: assert(r != __null && r->is_Region()) failed: this phi must have a region

3

[JDK-8271341](https://bugs.openjdk.org/browse/JDK-8271341) fixed a case for string opts where a diamond `Region/If` in the middle of a chain of calls that are optimized out is not folded away correctly in IGVN,...

8289051: C2: Cleanup PhaseCCP::analyze()

3

As part of [JDK-8288683](https://bugs.openjdk.org/browse/JDK-8288683), which went into JDK 19, I separated out most of the included refactorings into this cleanup RFE to make the fix as small as possible. This...

8280378: [IR Framework] Support IR matching for different compile phases

6

This patch extends the IR framework with the capability to perform IR matching not only on the `PrintIdeal` and `PrintOptoAssembly` flag outputs but also on the `PrintIdeal` output of the...

8293422: DWARF emitted by Clang cannot be parsed

15

The DWARF debugging symbols emitted by Clang is different from what GCC is emitting. While GCC produces a complete `.debug_aranges` section (which is required in the DWARF parser), Clang does...

8305638: Refactor Template Assertion Predicate Bool creation and Predicate code in Split If and Loop Unswitching

9

This patch is intended for JDK 23. While preparing the patch for the full fix for Assertion Predicates [JDK-8288981](https://bugs.openjdk.org/browse/JDK-8288981), I still noticed that some changes are not required for the...

8330386: Replace Opaque4Node of Initialized Assertion Predicate with new OpaqueInitializedAssertionPredicateNode

6

This patch replaces the `Opaque4Node` of the `If` for Initialized Assertion Predicates with a new `OpaqueInitializedAsseritonPredicateNode`. This helps to simplify pattern matching for predicate code and to distinguish from the...

8335257: Refactor code to create Initialized Assertion Predicates into separate class

4

This is the next patch for Assertion Predicates. It refactors the code to create an Initialized Assertion Predicate. Changes include: - `clone_assertion_predicate_and_initialize()` currently does two things: Cloning a Template Assertion...

8373513: C2: Move ProjNode::other_if_proj() to IfProjNode

4

This is a simple clean-up patch which moves `ProjNode::other_if_proj()` to `IfProjNode` and update its uses. It only makes sense to call `other_if_proj()` on actual `IfProjNodes`. It also required to update...

8373420: C2: Add true/false_proj*() methods for IfNode as a replacement for proj_out*(true/false)

6

There are a lot of places in the code where we call `proj_out*(true/false)` on an `IfNode`. In some cases, we then cast the returned `ProjNode` back to `IfProjNode` or `IfTrueNode/IfFalseNode`....