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Convert some ObjC msgSends to runtime calls.

Description

Convert some ObjC msgSends to runtime calls.

It is faster to directly call the ObjC runtime for methods such as alloc/allocWithZone instead of sending a message to those functions.

This patch adds support for converting messages to alloc/allocWithZone to their equivalent runtime calls.

Tests included for the positive case of applying this transformation, negative tests that we ensure we only convert "alloc" to objc_alloc, not "alloc2", and also a driver test to ensure we enable this only for supported runtime versions.

Reviewed By: rjmccall

https://reviews.llvm.org/D55349

Details

Committed
peteDec 7 2018, 9:13 PM
Reviewer
rjmccall
Parents
rL348686: Merging r345839:
Branches
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