llvm-svn: 88812

llvm-svn: 88805

llvm-svn: 88802

llvm-svn: 88800

 - This is an initial step towards -march=native support in Clang, and towards
   eliminating host dependencies in the targets. See PR5389.

 - Patch by Roman Divacky!

llvm-svn: 88768

llvm-svn: 88762

llvm-svn: 88761

- If destination is a physical register and it has a subreg index, use the
  sub-register instead.
This fixes PR5423.

llvm-svn: 88745

llvm-svn: 88734

llvm-svn: 88705

Move DebugInfo checks into EmitComments and remove them from
target-specific AsmPrinters.  Not all comments need DebugInfo.

Re-enable the line numbers comment test.

llvm-svn: 88697

llvm-svn: 88682

because the testcase is triggering one more bug.

llvm-svn: 88674

PPC is such a target; make it work.

llvm-svn: 87060

llvm-svn: 87056

llvm-svn: 87054

Fix a bootstrap failure.

Provide special isLoadFromStackSlotPostFE and isStoreToStackSlotPostFE
interfaces to explicitly request checking for post-frame ptr elimination
operands.  This uses a heuristic so it isn't reliable for correctness.

llvm-svn: 87047

Make the MachineFunction argument of getFrameRegister const.

This also fixes a build error.

llvm-svn: 87027

Add hasLoadFromStackSlot and hasStoreToStackSlot to return whether a
machine instruction loads or stores from/to a stack slot.  Unlike
isLoadFromStackSlot and isStoreFromStackSlot, the instruction may be
something other than a pure load/store (e.g. it may be an arithmetic
operation with a memory operand).  This helps AsmPrinter determine when
to print a spill/reload comment.

This is only a hint since we may not be able to figure this out in all
cases.  As such, it should not be relied upon for correctness.

Implement for X86.  Return false by default for other architectures.

llvm-svn: 87026

Add a bool flag to StackObjects telling whether they reference spill
slots.  The AsmPrinter will use this information to determine whether to
print a spill/reload comment.

Remove default argument values.  It's too easy to pass a wrong argument
value when multiple arguments have default values.  Make everything
explicit to trap bugs early.

Update all targets to adhere to the new interfaces..

llvm-svn: 87022

StringsEqualNoCase (from StringExtras.h) to it.

llvm-svn: 87020

to directly follow the jump table. Move the layout changes to prior to any
constant island handling.

llvm-svn: 86999

llvm-svn: 86965

llvm-svn: 86964

Revert 86857. It's causing consumer-typeset to fail, and there's a better way to do it forthcoming anyway.

llvm-svn: 86945

llvm-svn: 86895

Add TargetLowering::isLegalICmpImmediate. It tells LSR what immediate can be folded into target icmp instructions.

llvm-svn: 86858

llvm-svn: 86857

llvm-svn: 86851

llvm-svn: 86850

llvm-svn: 86848

llvm-svn: 86847

The TBB and TBH instructions for Thumb2 are really handy for jump tables, but
can only branch forward. To best take advantage of them, we'd like to adjust
the basic blocks around a bit when reasonable. This patch puts basics in place
to do that, with a super-simple algorithm for backwards jump table targets that
creates a new branch after the jump table which branches backwards. Real
heuristics for reordering blocks or other modifications rather than inserting
branches will follow.

llvm-svn: 86791

llvm-svn: 86769

llvm-svn: 86756

llvm-svn: 86754

llvm-svn: 86732

generates a sequence similar to this:

__Z4funci:
LFB2:
        mflr r0
LCFI0:
        stmw r30,-8(r1)
LCFI1:
        stw r0,8(r1)
LCFI2:
        stwu r1,-80(r1)
LCFI3:
        mr r30,r1
LCFI4:

where LCFI3 and LCFI4 are used by the FDE to indicate what the FP, LR, and other
things are. We generated something more like this:

Leh_func_begin1:
        mflr r0
        stw r31, 20(r1)
        stw r0, 8(r1)
Llabel1:
        stwu r1, -80(r1)
Llabel2:
        mr r31, r1

Note that we are missing the "mr" instruction. This patch makes it more like the
GCC output.

llvm-svn: 86729

[r0, #2 * 4]
Now
[r0, #8]

This makes Thumb2 assembly more uniform and frankly the scale doesn't add much.

llvm-svn: 86707

llvm-svn: 86706