[llvm] [llvm-objcopy] Add llvm-objcopy option --set-visibility-sym (PR #80872)

[James Henderson via llvm-commits]

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@@ -0,0 +1,139 @@
+
+# RUN: yaml2obj %s -o %t.o
+# RUN: echo '.*' > %t.symbols.regex
+
+# RUN: cp %t.o %t0.o
+# RUN: llvm-objcopy %t0.o --set-visibility-syms=%t.symbols.regex=default --regex
+# RUN: llvm-readelf -s %t0.o | FileCheck %s --check-prefix=DEF
+# DEF-DAG: LOCAL  DEFAULT     1 default_local
+# DEF-DAG: LOCAL  DEFAULT     1 internal_local
+# DEF-DAG: LOCAL  DEFAULT     1 hidden_local
+# DEF-DAG: LOCAL  DEFAULT     1 protected_local
+# DEF-DAG: GLOBAL DEFAULT     1 default_global
+# DEF-DAG: WEAK   DEFAULT     1 default_weak
+# DEF-DAG: GLOBAL DEFAULT     1 internal_global
+# DEF-DAG: WEAK   DEFAULT     1 internal_weak
+# DEF-DAG: GLOBAL DEFAULT     1 hidden_global
+# DEF-DAG: WEAK   DEFAULT     1 hidden_weak
+# DEF-DAG: GLOBAL DEFAULT     1 protected_global
+# DEF-DAG: WEAK   DEFAULT     1 protected_weak
+
+# RUN: cp %t.o %t0.o
+# RUN: llvm-objcopy %t0.o --set-visibility-syms=%t.symbols.regex=hidden --regex
+# RUN: llvm-readelf -s %t0.o | FileCheck %s --check-prefix=HID
+# HID-DAG: LOCAL  HIDDEN      1 default_local
+# HID-DAG: LOCAL  HIDDEN      1 internal_local
+# HID-DAG: LOCAL  HIDDEN      1 hidden_local
+# HID-DAG: LOCAL  HIDDEN      1 protected_local
+# HID-DAG: GLOBAL HIDDEN      1 default_global
+# HID-DAG: WEAK   HIDDEN      1 default_weak
+# HID-DAG: GLOBAL HIDDEN      1 internal_global
+# HID-DAG: WEAK   HIDDEN      1 internal_weak
+# HID-DAG: GLOBAL HIDDEN      1 hidden_global
+# HID-DAG: WEAK   HIDDEN      1 hidden_weak
+# HID-DAG: GLOBAL HIDDEN      1 protected_global
+# HID-DAG: WEAK   HIDDEN      1 protected_weak
+
+# RUN: cp %t.o %t0.o
+# RUN: llvm-objcopy %t0.o --set-visibility-syms=%t.symbols.regex=protected --regex
+# RUN: llvm-readelf -s %t0.o | FileCheck %s --check-prefix=PRO
+# PRO-DAG: LOCAL  PROTECTED   1 default_local
+# PRO-DAG: LOCAL  PROTECTED   1 internal_local
+# PRO-DAG: LOCAL  PROTECTED   1 hidden_local
+# PRO-DAG: LOCAL  PROTECTED   1 protected_local
+# PRO-DAG: GLOBAL PROTECTED   1 default_global
+# PRO-DAG: WEAK   PROTECTED   1 default_weak
+# PRO-DAG: GLOBAL PROTECTED   1 internal_global
+# PRO-DAG: WEAK   PROTECTED   1 internal_weak
+# PRO-DAG: GLOBAL PROTECTED   1 hidden_global
+# PRO-DAG: WEAK   PROTECTED   1 hidden_weak
+# PRO-DAG: GLOBAL PROTECTED   1 protected_global
+# PRO-DAG: WEAK   PROTECTED   1 protected_weak
+
+# RUN: cp %t.o %t0.o
+# RUN: llvm-objcopy %t0.o --set-visibility-syms=%t.symbols.regex=internal --regex
+# RUN: llvm-readelf -s %t0.o | FileCheck %s --check-prefix=INT
+# INT-DAG: LOCAL  INTERNAL    1 default_local
+# INT-DAG: LOCAL  INTERNAL    1 internal_local
+# INT-DAG: LOCAL  INTERNAL    1 hidden_local
+# INT-DAG: LOCAL  INTERNAL    1 protected_local
+# INT-DAG: GLOBAL INTERNAL    1 default_global
+# INT-DAG: WEAK   INTERNAL    1 default_weak
+# INT-DAG: GLOBAL INTERNAL    1 internal_global
+# INT-DAG: WEAK   INTERNAL    1 internal_weak
+# INT-DAG: GLOBAL INTERNAL    1 hidden_global
+# INT-DAG: WEAK   INTERNAL    1 hidden_weak
+# INT-DAG: GLOBAL INTERNAL    1 protected_global
+# INT-DAG: WEAK   INTERNAL    1 protected_weak
+
+# RUN: cp %t.o %t0.o
+# RUN: llvm-objcopy %t0.o --set-visibility-sym=hidden_global=default
+# RUN: llvm-objcopy %t0.o --set-visibility-sym=default_global=hidden
+# RUN: llvm-objcopy %t0.o --set-visibility-sym=internal_global=protected
+# RUN: llvm-objcopy %t0.o --set-visibility-sym=protected_global=internal
+# RUN: llvm-readelf -s %t0.o | FileCheck %s --check-prefix=SYM
+# SYM-DAG: GLOBAL DEFAULT     1 hidden_global
----------------
jh7370 wrote:

You should probably show that the other symbols are not impacted in this case.

https://github.com/llvm/llvm-project/pull/80872