Adjust and expand ignore-symbols.test

Author: kuilpd

llvm/test/tools/llvm-objcopy/ELF/ignore-symbols.test

@@ -2,19 +2,36 @@
 # RUN: yaml2obj %s -o %t.o
 # RUN: echo 'foo[2-3]' > %t.ignore.regex
 
-# RUN: cp  %t.o  %t1.o
-# RUN: llvm-objcopy  %t1.o --localize-hidden --ignore-symbols=%t.ignore.regex --regex
-# RUN: llvm-readelf -s  %t1.o | FileCheck %s --check-prefix=SYMS
-# SYMS-DAG: LOCAL  HIDDEN      1 foo1
-# SYMS-DAG: GLOBAL HIDDEN      1 foo2
-# SYMS-DAG: GLOBAL HIDDEN      1 foo3
-
-# RUN: cp  %t.o  %t1.o
-# RUN: llvm-objcopy  %t1.o --localize-hidden --ignore-symbol=foo3
-# RUN: llvm-readelf -s  %t1.o | FileCheck %s --check-prefix=SYM
-# SYM-DAG: LOCAL  HIDDEN      1 foo1
-# SYM-DAG: LOCAL  HIDDEN      1 foo2
-# SYM-DAG: GLOBAL HIDDEN      1 foo3
+# Check --ignore-symbols functionality when changing symbol bindings
+# RUN: llvm-objcopy %t.o %t1.o --localize-hidden --ignore-symbols=%t.ignore.regex --regex
+# RUN: llvm-readelf -s %t1.o | FileCheck %s --check-prefix=LH-SYMS
+# LH-SYMS-DAG: LOCAL  HIDDEN      1 foo1
+# LH-SYMS-DAG: GLOBAL HIDDEN      1 foo2
+# LH-SYMS-DAG: GLOBAL HIDDEN      1 foo3
+
+# Check --ignore-symbol functionality when changing symbol bindings
+# RUN: llvm-objcopy %t.o %t2.o --localize-hidden --ignore-symbol=foo3
+# RUN: llvm-readelf -s %t2.o | FileCheck %s --check-prefix=LH-SYM
+# LH-SYM-DAG: LOCAL  HIDDEN      1 foo1
+# LH-SYM-DAG: LOCAL  HIDDEN      1 foo2
+# LH-SYM-DAG: GLOBAL HIDDEN      1 foo3
+
+
+# Check --ignore-symbols functionality when changing symbol names
+# RUN: echo -e "foo1 bar1\nfoo2 bar2" > %t.renames.list
+# RUN: llvm-objcopy %t.o %t3.o --redefine-syms=%t.renames.list --ignore-symbols=%t.ignore.regex --regex
+# RUN: llvm-readelf -s %t3.o | FileCheck %s --check-prefix=RS-SYMS
+# RS-SYMS-DAG: bar1
+# RS-SYMS-DAG: foo2
+# RS-SYMS-DAG: foo3
+
+# Check --ignore-symbols functionality when changing symbol names
+# RUN: llvm-objcopy %t.o %t4.o --redefine-sym=foo1=bar1 --ignore-symbol=fo.* --regex
+# RUN: llvm-readelf -s %t4.o | FileCheck %s --check-prefix=RS-SYM
+# RS-SYM-DAG: foo1
+# RS-SYM-DAG: foo2
+# RS-SYM-DAG: foo3
+
 
 !ELF
 FileHeader:
@@ -25,7 +42,6 @@ FileHeader:
 Sections:
   - Name:            .text
     Type:            SHT_PROGBITS
-    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
 Symbols:
   - Name:    foo1
     Section: .text