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[SimplifyCFG] Skip sinking common lifetime markers of `alloca`.

Authored by hliao on Aug 29 2019, 9:12 AM.

Description

[SimplifyCFG] Skip sinking common lifetime markers of alloca.

Summary:

  • Similar to the workaround in fix of PR30188, skip sinking common lifetime markers of alloca. They are mostly left there after inlining functions in branches.

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66950

llvm-svn: 370376