[llvm-objcopy] Add file names to error messages

Summary:
This patch adds the file names to llvm-objcopy error messages. It makes easy to identify which file causes an error.

Bugzilla: https://bugs.llvm.org/show_bug.cgi?id=41798

Reviewers: espindola, alexshap, rupprecht, jhenderson, jakehehrlich

Reviewed By: rupprecht, jhenderson, jakehehrlich

Subscribers: emaste, arichardson, jakehehrlich, MaskRay, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D61993

llvm-svn: 361450
diff --git a/llvm/test/tools/llvm-objcopy/ELF/symtab-error-on-remove-strtab.test b/llvm/test/tools/llvm-objcopy/ELF/symtab-error-on-remove-strtab.test
index cb4cc26..7c9a460 100644
--- a/llvm/test/tools/llvm-objcopy/ELF/symtab-error-on-remove-strtab.test
+++ b/llvm/test/tools/llvm-objcopy/ELF/symtab-error-on-remove-strtab.test
@@ -1,7 +1,7 @@
 # RUN: yaml2obj %s > %t
-# RUN: not llvm-objcopy -R .strtab %t %t2 2>&1 >/dev/null | FileCheck %s --check-prefix=ERR
+# RUN: not llvm-objcopy -R .strtab %t %t2 2>&1 >/dev/null | FileCheck %s --check-prefix=ERR1 -DINPUT=%t
 # RUN: cp %t %t3
-# RUN: not llvm-strip --no-strip-all -R .strtab %t3 2>&1 >/dev/null | FileCheck %s --check-prefix=ERR
+# RUN: not llvm-strip --no-strip-all -R .strtab %t3 2>&1 >/dev/null | FileCheck %s --check-prefix=ERR2 -DINPUT=%t3
 
 !ELF
 FileHeader:
@@ -10,7 +10,8 @@
   Type:            ET_REL
   Machine:         EM_X86_64
 
-# ERR: string table '.strtab' cannot be removed because it is referenced by the symbol table '.symtab'
+# ERR1: error: '[[INPUT]]': string table '.strtab' cannot be removed because it is referenced by the symbol table '.symtab'
+# ERR2: error: '[[INPUT]]': string table '.strtab' cannot be removed because it is referenced by the symbol table '.symtab'
 
 # RUN: llvm-objcopy --allow-broken-links -R .strtab %t %t4
 # RUN: llvm-objdump --section-headers %t4 | FileCheck %s --check-prefix=SECTIONS --implicit-check-not=.strtab