[llvm-objcopy] Adding support for decompressing zlib compressed dwarf sections.
Summary: I had added support for compressing dwarf sections in a prior commit,
this one adds support for decompressing. Usage is:
llvm-objcopy --decompress-debug-sections input.o output.o
Reviewers: jakehehrlich, jhenderson, alexshap
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D51841
llvm-svn: 343451
diff --git a/llvm/test/tools/llvm-objcopy/compress-debug-sections-zlib-gnu.test b/llvm/test/tools/llvm-objcopy/compress-debug-sections-zlib-gnu.test
index eb69752..7199b2e 100644
--- a/llvm/test/tools/llvm-objcopy/compress-debug-sections-zlib-gnu.test
+++ b/llvm/test/tools/llvm-objcopy/compress-debug-sections-zlib-gnu.test
@@ -2,12 +2,26 @@
# RUN: yaml2obj %p/Inputs/compress-debug-sections.yaml -o %t.o
# RUN: llvm-objcopy --compress-debug-sections=zlib-gnu %t.o %t-compressed.o
+# RUN: llvm-objcopy --decompress-debug-sections %t-compressed.o %t-decompressed.o
# RUN: llvm-objdump -s %t.o -section=.debug_foo | FileCheck %s
# RUN: llvm-objdump -s %t-compressed.o | FileCheck %s --check-prefix=CHECK-COMPRESSED
# RUN: llvm-readobj -relocations -s %t-compressed.o | FileCheck %s --check-prefix=CHECK-FLAGS
+# RUN: llvm-readobj -relocations -s %t-decompressed.o | FileCheck %s --check-prefix=CHECK-HEADER
+# RUN: llvm-readobj -relocations -s %t.o | FileCheck %s --check-prefix=CHECK-HEADER
+# RUN: llvm-objdump -s %t-decompressed.o -section=.debug_foo | FileCheck %s
# CHECK: .debug_foo:
+# CHECK-NEXT: 0000 00000000 00000000
+
+# CHECK-HEADER: Index: 1
+# CHECK-HEADER-NEXT: Name: .debug_foo
+# CHECK-HEADER-NEXT: Type: SHT_PROGBITS
+# CHECK-HEADER-NEXT: Flags [
+# CHECK-HEADER-NEXT: ]
+# CHECK-HEADER-NEXT: Address:
+# CHECK-HEADER-NEXT: Offset:
+# CHECK-HEADER-NEXT: Size: 8
# CHECK-COMPRESSED: .zdebug_foo:
# CHECK-COMPRESSED: ZLIB