> Hi All, > > This patch adds C2 compiler support for various Float16 operations added by > [PR#22128](https://github.com/openjdk/jdk/pull/22128) > > Following is the summary of changes included with this patch:- > > 1. Detection of various Float16 operations through inline expansion or > pattern folding idealizations. > 2. Float16 operations like add, sub, mul, div, max, and min are inferred > through pattern folding idealization. > 3. Float16 SQRT and FMA operation are inferred through inline expansion and > their corresponding entry points are defined in the newly added Float16Math > class. > - These intrinsics receive unwrapped short arguments encoding IEEE > 754 binary16 values. > 5. New specialized IR nodes for Float16 operations, associated idealizations, > and constant folding routines. > 6. New Ideal type for constant and non-constant Float16 IR nodes. Please > refer to [FAQs > ](https://github.com/openjdk/jdk/pull/22754#issuecomment-2543982577)for more > details. > 7. Since Float16 uses short as its storage type, hence raw FP16 values are > always loaded into general purpose register, but FP16 ISA generally operates > over floating point registers, thus the compiler injects reinterpretation IR > before and after Float16 operation nodes to move short value to floating > point register and vice versa. > 8. New idealization routines to optimize redundant reinterpretation chains. > HF2S + S2HF = HF > 9. X86 backend implementation for all supported intrinsics. > 10. Functional and Performance validation tests. > > Kindly review the patch and share your feedback. > > Best Regards, > Jatin
Jatin Bhateja has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision: Review comments resolutions ------------- Changes: - all: https://git.openjdk.org/jdk/pull/22754/files - new: https://git.openjdk.org/jdk/pull/22754/files/ae6776e3..dd444c44 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=22754&range=06 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22754&range=05-06 Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/22754.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/22754/head:pull/22754 PR: https://git.openjdk.org/jdk/pull/22754
