[yaml2obj][ELF] Ensure more fields are zero'd.

I was spotting garbage in the output. I'd like to just zero the entire
ELFYAML::Section to be sure, but it contains non-POD types. (I'm also
trying to avoid bloating the ELFYAML::Foo classes with a bunch of
constructor code).

No test, since this is by its very nature unpredictable. I'm pretty sure
that one of the sanitizers would catch it immediately though.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184160 91177308-0d34-0410-b5e6-96231b3b80d8
[yaml2obj][ELF] Refer specifically to the section header string table.

A bug in libObject will cause it to assert() if a symbol table's string
table and the section header string table are the same section, so we
need to ensure that we emit two different string tables (among other
things). The problematic code is the hardcoded usage of ".strtab"
(`dot_strtab_sec`) for looking up symbol names in
ELFObjectFile<ELFT>::getSymbolName.

I discussed this with Michael, and he has some local improvements to the
ELF code in libObject that, among other things, should fix our handling
of this scenario.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184161 91177308-0d34-0410-b5e6-96231b3b80d8
[yaml2obj][ELF] Factor out string table section creation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184162 91177308-0d34-0410-b5e6-96231b3b80d8
Build Apple's llvmCore with --disable-zlib. <rdar://problem/14182316>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184164 91177308-0d34-0410-b5e6-96231b3b80d8
remove some @deprecated markers: LLVM APIs aren't deprecated, they are removed when obsolete.
These APIs are still used, and the constant APIs are actually really important.

Removing these makes -Wdocumentation more useful.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184170 91177308-0d34-0410-b5e6-96231b3b80d8
Simplify some of the code. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184172 91177308-0d34-0410-b5e6-96231b3b80d8
Remove dead prototype.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184173 91177308-0d34-0410-b5e6-96231b3b80d8
Fix nondeterminism in .gcno file generation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184174 91177308-0d34-0410-b5e6-96231b3b80d8
Use pointers to the MCAsmInfo and MCRegInfo.

Someone may want to do something crazy, like replace these objects if they
change or something.

No functionality change intended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184175 91177308-0d34-0410-b5e6-96231b3b80d8
Hopefully fix the MSVS build after r184105

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184178 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: thumb stores cannot use PC as dest register

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184179 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: fix thumb literal loads decoding

This fixes two previous issues:
- Negative offsets were not correctly disassembled
- The decoded opcodes were not the right one

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184180 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: add operands pre-writeback variants when needed

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184181 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: fix literal load with positive offset encoding

When using a positive offset, literal loads where encoded
as if it was negative, because:
- The sign bit was not assigned to an operand
- The addrmode_imm12 operand was not encoding the sign bit correctly

This patch also makes the assembler look at the .w/.n specifier for
loads.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184182 91177308-0d34-0410-b5e6-96231b3b80d8
Don't convert object_error's enum to and from int.

This allows the compiler to see the enum and warn about it. While in here,
fix a switch to not use a default and fix style violations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184186 91177308-0d34-0410-b5e6-96231b3b80d8
Basic support for parsing Mach-O universal binaries in LLVMObject library

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184191 91177308-0d34-0410-b5e6-96231b3b80d8
Don't use PathV1.h in tools/bugpoint/Miscompilation.cpp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184193 91177308-0d34-0410-b5e6-96231b3b80d8
Convert some uses of eraseFromDisk.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184196 91177308-0d34-0410-b5e6-96231b3b80d8
Remove usage of PathV1.h from OptimizerDriver.cpp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184198 91177308-0d34-0410-b5e6-96231b3b80d8
Add a return value to make this function more useful.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184200 91177308-0d34-0410-b5e6-96231b3b80d8