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Add an option to support debug fission on implicit ThinLTO.

Description

Add an option to support debug fission on implicit ThinLTO.

Summary:
This adds an option -gsplit-dwarf=<arg>. LLVM can create .dwo files in the given directory
during the implicit ThinLTO link stage.

Reviewers: tejohnson, dblaikie, pcc

Reviewed By: pcc

Subscribers: steven_wu, aprantl, JDevlieghere, yunlian, probinson, mehdi_amini, inglorion, cfe-commits

Differential Revision: https://reviews.llvm.org/D44788

Details

Committed
yunlianJun 25 2018, 4:05 PM
Reviewer
pcc
Differential Revision
D44788: Add an option to support debug fission on implicit ThinLTO.
Parents
rL335545: [InstCombine] cleanup udiv folds; NFCI
Branches
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