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SIMD-0321 VM Register 2 Instruction Data Pointer

ReviewCoreStandardcreated 2025-07-11

Authors: Joe Caulfield (Anza), Dean Little (Blueshift)

Provide a pointer to instruction data in VM register 2 (r2) at program entrypoint, enabling direct access to instruction data without having to parse the accounts section of the serialized input region.

Feature gate

The account below is the gate. Its state is decoded from the account data on each cluster, so it reflects the chain rather than the proposal text.

5xXZc66h4UdB6Yq7FzdBxBiRAFMMScMLwHxk2QZDaNZL

mainnetActivatedslot 410,400,000
testnetActivatedslot 388,028,256
devnetActivatedslot 446,688,000
The document and the chain disagree.

the document says Review while its feature gate is active on mainnet since slot 410,400,000

What the proposal covers

Parsed from the canonical proposal · pull request