llvm-svn: 92920

llvm-svn: 92919

llvm-svn: 92918

llvm-svn: 92874

Some instructions refer to unique labels, and so cannot be trivially cloned
with CloneMachineInstr.

llvm-svn: 92873

multiple register definitions.

llvm-svn: 92864

llvm-svn: 92850

(OP (trunc x), (trunc y)) -> (trunc (OP x, y))

Unfortunately this simple change causes dag combine to infinite looping. The problem is the shrink demanded ops optimization tend to canonicalize expressions in the opposite manner. That is badness. This patch disable those optimizations in dag combine but instead it is done as a late pass in sdisel.

This also exposes some deficiencies in dag combine and x86 setcc / brcond lowering. Teach them to look pass ISD::TRUNCATE in various places.

llvm-svn: 92849

llvm-svn: 92837

llvm-svn: 92830

An instruction like this:

  %reg1097:1<def> = VMOVSR %R3<kill>, 14, %reg0

Must be replaced with this when substituting physical registers:

  %S0<def> = VMOVSR %R3<kill>, 14, %reg0, %D0<imp-def>

llvm-svn: 92812

llvm-svn: 92810

llvm-svn: 92807

bottom-up scheduler. We prefer the lower order number.

llvm-svn: 92806

result in illegal types for the SHL operator.

llvm-svn: 92797

uses several kinds of opcode values which are not declared within
that enum. This fixes PR5946.

llvm-svn: 92794

llvm-svn: 92772

llvm-svn: 92771

A phi operand that is implicitly defined in a predecessor becomes an undefined
register after phi elimination. This causes a lot of false positives when the
verifier is checking if live-in registers are live-out from all predecessors.

Removing the verifier checks seems like a better solution than insisting on
IMPLICIT_DEF instructions in predecessor blocks.

llvm-svn: 92769

llvm-svn: 92736

Avoid going through the LLVMContext for type equality where it's safe to dereference the type pointer.

llvm-svn: 92726

 Intrinsic::dbg_stoppoint
 Intrinsic::dbg_region_start
 Intrinsic::dbg_region_end
 Intrinsic::dbg_func_start

llvm-svn: 92672

llvm-svn: 92671

llvm-svn: 92597

llvm-svn: 92596

llvm-svn: 92595

llvm-svn: 92594

llvm-svn: 92593

llvm-svn: 92592

llvm-svn: 92591

llvm-svn: 92590

llvm-svn: 92589

llvm-svn: 92588

llvm-svn: 92587

llvm-svn: 92586

llvm-svn: 92585

llvm-svn: 92584

llvm-svn: 92583

llvm-svn: 92582

llvm-svn: 92581