Add two-operand instruction aliases. Add parsing and encoding tests for
variants of the instruction.

llvm-svn: 135713

Add two-operand instruction aliases. Add parsing and encoding tests for
variants of the instruction.

llvm-svn: 135712

llvm-svn: 135710

llvm-svn: 135709

llvm-svn: 135706

llvm-svn: 135704

Aliases for LDM/STM. The single-register versions should encode to LDR/STR
with writeback, but we don't (yet) get that correct. Neither does Darwin's
system assembler, though, so that's not a deal-breaker of a limitation.

llvm-svn: 135702

llvm-svn: 135698

llvm-svn: 135696

Split up the ARM so_reg ComplexPattern into so_reg_reg and so_reg_imm, allowing us to distinguish the encodings that use shifted registers from those that use shifted immediates.  This is necessary to allow the fixed-length decoder to distinguish things like BICS vs LDRH.

llvm-svn: 135693

llvm-svn: 135684

llvm-svn: 135683

llvm-svn: 135682

Stefanovic. I removed the part that actually emits the instructions cause
I want that to get in better shape first and in incremental steps. This
also makes it easier to review the upcoming parts.

llvm-svn: 135678

llvm-svn: 135676

llvm-svn: 135674

ConstantExpr::getInBoundsGetElementPtr to use ArrayRef.

llvm-svn: 135673

to use ArrayRef.

llvm-svn: 135672

llvm-svn: 135671

to for it to be an an anon namespace and be in a header.

Eliminate some extraenous uses of tie.

llvm-svn: 135669

- Add more bitcasts for v16i16
- Since 135661 and 135662 already added the splat logic,
just add one more splat test for v16i16

llvm-svn: 135663

instruction introduced in AVX, which can operate on 128 and 256-bit vectors.
It considers a 256-bit vector as two independent 128-bit lanes. It can permute
any 32 or 64 elements inside a lane, and restricts the second lane to
have the same permutation of the first one. With the improved splat support
introduced early today, adding codegen for this instruction enable more
efficient 256-bit code:

Instead of:
  vextractf128  $0, %ymm0, %xmm0
  punpcklbw %xmm0, %xmm0
  punpckhbw %xmm0, %xmm0
  vinsertf128 $0, %xmm0, %ymm0, %ymm1
  vinsertf128 $1, %xmm0, %ymm1, %ymm0
  vextractf128  $1, %ymm0, %xmm1
  shufps  $1, %xmm1, %xmm1
  movss %xmm1, 28(%rsp)
  movss %xmm1, 24(%rsp)
  movss %xmm1, 20(%rsp)
  movss %xmm1, 16(%rsp)
  vextractf128  $0, %ymm0, %xmm0
  shufps  $1, %xmm0, %xmm0
  movss %xmm0, 12(%rsp)
  movss %xmm0, 8(%rsp)
  movss %xmm0, 4(%rsp)
  movss %xmm0, (%rsp)
  vmovaps (%rsp), %ymm0
We get:
  vextractf128  $0, %ymm0, %xmm0
  punpcklbw %xmm0, %xmm0
  punpckhbw %xmm0, %xmm0
  vinsertf128 $0, %xmm0, %ymm0, %ymm1
  vinsertf128 $1, %xmm0, %ymm1, %ymm0
  vpermilps $85, %ymm0, %ymm0

llvm-svn: 135662

refactor the code and add a bunch of comments. The final shuffle
emitted by handling 256-bit types is suitable for the VPERM shuffle
instruction which is going to be introduced in a next commit (with
a testcase which cover this commit)

llvm-svn: 135661

llvm-svn: 135660

llvm-svn: 135659

llvm-svn: 135658

llvm-svn: 135657

llvm-svn: 135656

llvm-svn: 135654

rdar://9786536

llvm-svn: 135650

llvm-svn: 135645

rdar://9786536

llvm-svn: 135644

X86 is the only target that uses coff format. This should fixes test failures running on Windows, Cygwin, or MingW hosts.

llvm-svn: 135639

llvm-svn: 135637

Sink ARMMCExpr and ARMAddressingModes into MC layer. First step to separate ARM MC code from target.

llvm-svn: 135636

llvm-svn: 135635

llvm-svn: 135634

llvm-svn: 135633

llvm-svn: 135632

There are two ways to map a variable to its lexical scope. Lexical scope information is embedded in MDNode describing the variable. It is also available as a part of DebugLoc attached with DBG_VALUE instruction. DebugLoc attached with an instruction is less reliable in optimized code so use information embedded in the MDNode.

llvm-svn: 135629