PowerPC: Support PC-relative fixup_ppc_brcond14.

When testing the asm parser, I ran into an error when using a conditional
branch to an external symbol (this doesn't occur in compiler-generated
code) due to missing support in PPCELFObjectWriter::getRelocTypeInner.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180605 91177308-0d34-0410-b5e6-96231b3b80d8
PowerPC: Fix encoding of rldimi and rldcl instructions

When testing the asm parser, I noticed wrong encodings for the
above instructions (wrong operand name in rldimi, wrong form
and sub-opcode for rldcl).

Tests will be added together with the asm parser.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180606 91177308-0d34-0410-b5e6-96231b3b80d8
PowerPC: Fix encoding of stfsu and stfdu instructions

When testing the asm parser, I noticed wrong encodings for the
above instructions (wrong sub-opcodes).  Note that apparently
the compiler currently never generates pre-inc instructions
for floating point types for some reason ...

Tests will be added together with the asm parser.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180607 91177308-0d34-0410-b5e6-96231b3b80d8
PowerPC: Fix encoding of vsubcuw and vsum4sbs instructions

When testing the asm parser, I noticed wrong encodings for the
above instructions (wrong sub-opcodes).

Tests will be added together with the asm parser.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180608 91177308-0d34-0410-b5e6-96231b3b80d8
Re-write the address propagation code for pre-indexed loads/stores to take into account some previously misssed cases (PRE_DEC addressing mode, the offset and base address are swapped, etc). This should fix PR15581.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180609 91177308-0d34-0410-b5e6-96231b3b80d8