Test all <build attribute, value> pairs.

Add more tests to make sure the encoding/decoding of build attributes works
correctly for all permissible values of build attributes. For cases where there
are an infinite number of such values, a representative subset has been settled
for.

Change-Id: I2643c9624c211b2d56405306e16eec2d487bc5d6
llvm-svn: 222917
diff --git a/llvm/test/tools/llvm-readobj/ARM/attribute-11.s b/llvm/test/tools/llvm-readobj/ARM/attribute-11.s
new file mode 100644
index 0000000..2d8e43b
--- /dev/null
+++ b/llvm/test/tools/llvm-readobj/ARM/attribute-11.s
@@ -0,0 +1,24 @@
+@ RUN: llvm-mc -triple armv7-elf -filetype asm -o - %s | FileCheck %s
+@ RUN: llvm-mc -triple armv7-eabi -filetype obj -o - %s \
+@ RUN:   | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=CHECK-OBJ
+.eabi_attribute  Tag_CPU_arch, 11
+@CHECK:   .eabi_attribute 6, 11
+@CHECK-OBJ: Tag: 6
+@CHECK-OBJ-NEXT: Value: 11
+@CHECK-OBJ-NEXT: TagName: CPU_arch
+@CHECK-OBJ-NEXT: Description: ARM v6-M
+
+.eabi_attribute  Tag_ABI_align_needed, 11
+@CHECK:   .eabi_attribute 24, 11
+@CHECK-OBJ: Tag: 24
+@CHECK-OBJ-NEXT: Value: 11
+@CHECK-OBJ-NEXT: TagName: ABI_align_needed
+@CHECK-OBJ-NEXT: Description: 8-byte alignment, 2048-byte extended alignment
+
+.eabi_attribute  Tag_ABI_align_preserved, 11
+@CHECK:   .eabi_attribute 25, 11
+@CHECK-OBJ: Tag: 25
+@CHECK-OBJ-NEXT: Value: 11
+@CHECK-OBJ-NEXT: TagName: ABI_align_preserved
+@CHECK-OBJ-NEXT: Description: 8-byte stack alignment, 2048-byte data alignment
+