libobjc2

Commit Graph

Author	SHA1	Message	Date
David Chisnall	c3c81796ca	Rework slot handling so that the fields that are used for dispatch are at the start of the structure, making it easier to change the layout in the future. Also clean up the growth of various fields and consolidate some of the metadata into a pointer to the `struct objc_method`.	10 years ago
David Chisnall	b952a21abe	Add objc_msgSend for AArch64. An interesting feature of the AArch64 ABI simplifies this code relative to other platforms. AArch64 reserves an extra register (x8) for the address of struct returns, giving the	10 years ago
David Chisnall	5107130277	Move the data for sparse arrays into the tree structure. This saves one load on the message send path for each tree depth (2 loads in the common case, 3 if you have a lot of selectors), which should improve cache usage considerably. Note: This is a checkpoint commit. Currently, every objc_msgSend() implementation except for x86-64 is broken.	10 years ago

Author

SHA1

Message

Date

David Chisnall

c3c81796ca

Rework slot handling so that the fields that are used for dispatch are

at the start of the structure, making it easier to change the layout in
the future.

Also clean up the growth of various fields and consolidate some of the
metadata into a pointer to the `struct objc_method`.

David Chisnall

b952a21abe

Add objc_msgSend for AArch64.

An interesting feature of the AArch64 ABI simplifies this code relative to other platforms.  AArch64 reserves an extra register (x8) for the address of struct returns, giving the

David Chisnall

5107130277

Move the data for sparse arrays into the tree structure.

This saves one load on the message send path for each tree depth (2
loads in the common case, 3 if you have a lot of selectors), which
should improve cache usage considerably.

Note: This is a checkpoint commit.  Currently, every objc_msgSend()
implementation except for x86-64 is broken.

3 Commits (4973b8d58a56fd1d87c06ae00c8c42e22c0aad23)