[llvm-bugs] [Bug 46692] New: split DWARF .dwo not saved/restored by ThinLTO cache

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=46692

            Bug ID: 46692
           Summary: split DWARF .dwo not saved/restored by ThinLTO cache
           Product: tools
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: lto
          Assignee: unassignedbugs at nondot.org
          Reporter: trass3r at gmail.com
                CC: llvm-bugs at lists.llvm.org

clang++ -O3 -flto=thin -gsplit-dwarf test.cpp -o test -fuse-ld=lld
-Wl,--thinlto-cache-dir=/tmp/testltocache

or

clang++ -O3 -flto=thin -gsplit-dwarf test.cpp -o test
-Wl,-plugin-opt,cache-dir=/tmp/testltocache

The first time it runs it does produce a test_dwo/1.dwo file but after that it
fetches the object file from the cache and the .dwo is lost.

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