Fangrui Song 38a716c30f Make -fno-pic respect -fno-direct-access-external-data ...

D92633 added -f[no-]direct-access-external-data to supersede -m[no-]pie-copy-relocations.
(The option works for -fpie but is a no-op for -fno-pic and -fpic.)

This patch makes -fno-pic -fno-direct-access-external-data drop dso_local from
global variable declarations. This usually causes the backend to emit a GOT
indirection for external data access. With a GOT relocation, the subsequent
-no-pie link will not have copy relocation even if the data symbol turns out to
be defined by a shared object.

Differential Revision: https://reviews.llvm.org/D92714

2021-01-09 00:32:02 -08:00

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