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[Attributor] Liveness analysis.

Description

[Attributor] Liveness analysis.

Liveness analysis abstract attribute used to indicate which BasicBlocks are dead and can therefore be ignored.
Right now we are only looking at noreturn calls.

Reviewers: jdoerfert, uenoku

Subscribers: hiraditya, llvm-commits

Differential revision: https://reviews.llvm.org/D64162

Details

Committed
sstefanJul 22 2019, 1:54 PM
Differential Revision
D64162: [Attributor] Liveness analysis.
Parents
rL366735: [NFC][libc++] Add missing EXPLICIT to pair and tuple synopsis
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