Auto merge of #92110 - nagisa:def-inlining, r=nikic

Backport LLVM changes to disable deferred inlining

Fixes #91128

I was thinking of how to best add the test case from the issue, and I think rust perf infrastructure would probably be the best place for something like it.

llvm-project @ 6b3dbcc8

-Subproject commit 8404254254e2b4c9a80e7403659f6391b08203df
+Subproject commit 6b3dbcc81a470e5da84576d63fcfc19e3b1154cd