[llvm-readobj] - Teach readobj to recognize SHF_COMPRESSED flag.

Main problem here was that SHF_COMPRESSED has the same value with
XCORE_SHF_CP_SECTION, which was included as standart (common) flag.
As far I understand xCore is a family of controllers and it that
means it's constant should be processed separately,
only if e_machine == EM_XCORE, otherwise llvm-readobj would output
different constants twice for compressed section:

Flags [
..
SHF_COMPRESSED (0x800)
..
XCORE_SHF_CP_SECTION (0x800)
..
]

what probably does not make sence if you're not working with xcore file.

Differential revision: http://reviews.llvm.org/D20273

llvm-svn: 270320

2 files changed, 9 insertions, 0 deletions

diff --git a/llvm/test/tools/llvm-readobj/Inputs/compression.zlib.style.elf-x86-64 b/llvm/test/tools/llvm-readobj/Inputs/compression.zlib.style.elf-x86-64
new file mode 100644
index 00000000000..34cdb8a89ed
--- /dev/null
+++ b/llvm/test/tools/llvm-readobj/Inputs/compression.zlib.style.elf-x86-64
diff --git a/llvm/test/tools/llvm-readobj/elf-sec-compressed.test b/llvm/test/tools/llvm-readobj/elf-sec-compressed.test
new file mode 100644
index 00000000000..baf0c687a91
--- /dev/null
+++ b/llvm/test/tools/llvm-readobj/elf-sec-compressed.test
@@ -0,0 +1,9 @@
+RUN: llvm-readobj -sections \
+RUN:   %p/Inputs/compression.zlib.style.elf-x86-64 | FileCheck %s
+
+CHECK:      Section {
+CHECK:       Name: .debug_info
+CHECK-NEXT:  Type: SHT_PROGBITS
+CHECK-NEXT:  Flags [ 
+CHECK-NEXT:   SHF_COMPRESSED (0x800)
+CHECK-NEXT:  ]