4 Commits

Author	SHA1	Message	Date
Erik Eckstein	a4c675ec88	CopyToBorrowOptimization: fix insertion order of end_borrows ... In liferange exit blocks the end_borrows were inserted in the wrong order. Fixes an ownership verification error rdar://142632741	2025-01-10 08:56:42 +01:00
Erik Eckstein	cd7c533d42	Optimizer: add SingleValueInstruction.replace(with:) and use it throughout the optimizer ... It replaces all uses and then erases the instruction.	2024-12-19 20:53:45 +01:00
Erik Eckstein	bdd80aac26	CopyToBorrowOptimization: correctly handle uses in dead-end blocks when removing a copy_value ... Fixes an ownership verifier crash rdar://141278208	2024-12-16 09:44:31 +01:00
Erik Eckstein	dd78dc722b	Optimizer: add an optimization to remove copy_value of a borrowed value. ... It removes a `copy_value` where the source is a guaranteed value, if possible: ``` %1 = copy_value %0 // %0 = a guaranteed value // uses of %1 destroy_value %1 // borrow scope of %0 is still valid here ``` -> ``` // uses of %0 ``` This optimization is very similar to the LoadCopyToBorrow optimization. Therefore I merged both optimizations into a single file and renamed it to "CopyToBorrowOptimization".	2024-12-09 20:01:07 +01:00