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[CGAtomic] Mark atomic libcall functions `nounwind`

Authored by guiand on Aug 14 2020, 12:34 AM.

Description

[CGAtomic] Mark atomic libcall functions nounwind

These functions won't ever unwind. This is useful for MemorySanitizer
as it simplifies handling __atomic_load in particular.

Differential Revision: https://reviews.llvm.org/D85573

Details

Committed
guiandAug 14 2020, 12:46 AM
Differential Revision
D85573: [CGAtomic] Mark atomic libcall functions `nounwind`
Parents
rGd795f968d92d: [gn build] Port 2e4a20fd706
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