branches to be emitted as:

 	bne cr0, 2
instead of:
 	bne cr0, $+8

llvm-svn: 119317

llvm-svn: 119315

'db', 'ib', 'da') instead of having that mode as a separate field in the
instruction. It's more convenient for the asm parser and much more readable for
humans.
<rdar://problem/8654088>

llvm-svn: 119310

llvm-svn: 119309

llvm-svn: 119308

these instructions to be encoded with getMachineOpValue.
This unbreaks ExecutionEngine/2003-01-04-ArgumentBug.ll 
when running on a G5

llvm-svn: 119307

Use amazing new function call technology instead of writing identical code in
multiple places.

This fixes PR8604.

llvm-svn: 119306

The live range of a register defined by an early clobber starts at the use slot,
not the def slot.

Except when it is an early clobber tied to a use operand. Then it starts at the
def slot like a standard def.

llvm-svn: 119305

llvm-svn: 119295

llvm-svn: 119286

to be broken for other reasons

llvm-svn: 119283

This reverts r119183 which borke the buildbots.

llvm-svn: 119270

llvm-svn: 119187

iterator, not TII->OptimizeCompareInstr.

llvm-svn: 119186

llvm-svn: 119185

pass in the first place and was masked by earlier failures not warning
and aborting the block.

llvm-svn: 119184

The live range of a register defined by an early clobber starts at the use slot,
not the def slot.

llvm-svn: 119183

live ranges for the spill register are also defined at the use slot instead of
the normal def slot.

This fixes PR8612 for the inline spiller. A use was being allocated to the same
register as a spilled early clobber def.

This problem exists in all the spillers. A fix for the standard spiller is
forthcoming.

llvm-svn: 119182

llvm-svn: 119180

llvm-svn: 119176

llvm-svn: 119175

llvm-svn: 119170

no longer included by default.

llvm-svn: 119169

llvm-svn: 119167

llvm-svn: 119164

llvm-svn: 119163

values that are equal to the phi itself.

llvm-svn: 119161

llvm-svn: 119153

variable if recursing fails to simplify it.

Factor AliasedSymbol to be a method of MCSymbol.

Update MCAssembler::EvaluateFixup to match the change in
EvaluateAsRelocatableImpl.

Remove the WeakRefExpr hack, as the object writer now sees the weakref with
no extra effort needed.

Nothing else is using MCTargetExpr, but keep it for now.

Now that the ELF writer sees relocations with aliases, handle

    .weak    foo2
foo2:
    .weak    bar2
    .set    bar2,foo2
    .quad    bar2

the same way gas does and produce a relocation with bar2.

llvm-svn: 119152

Added 2 new subclasses - X86ELFObjectWriter and ARMELFObectWriter.
ARM and X86 require different code for RecordRelocation(), possibly others.

llvm-svn: 119149

This moves most of the isUsed logic to the MCSymbol itself. With this we
get a bit more relaxed about allowing definitions after uses: uses that
don't evaluate their argument immediately (jmp foo) are accepted.

ddunbar, this was the smallest compromise I could think of that lets us
accept gcc (and clang!) assembly.

llvm-svn: 119144

No functionality change.

llvm-svn: 119142

directly on the mac.  This is very early, doesn't support relocations and
has a terrible hack to avoid .machine from being printed, but despite
that it generates an bitwise-identical-to-cctools .o file for stuff like 
this:

  define i32 @test() nounwind { ret i32 42 }

I don't plan to continue pushing this forward, but if anyone else was
interested in doing it, it should be really straight-forward.

llvm-svn: 119136

into the immediate field.  This allows us to encode stuff like this:

        lbz r3, lo16(__ZL4init)(r4)     ; globalopt.cpp:5
                                        ; encoding: [0x88,0x64,A,A]
                                        ;   fixup A - offset: 0, value: lo16(__ZL4init), kind: fixup_ppc_lo16

        stw r3, lo16(__ZL1s)(r5)        ; globalopt.cpp:6
                                        ; encoding: [0x90,0x65,A,A]
                                        ;   fixup A - offset: 0, value: lo16(__ZL1s), kind: fixup_ppc_lo16

With this, we should have a completely function MCCodeEmitter for PPC, wewt.

llvm-svn: 119134

modes.  For example, we now get:

	ld r3, lo16(_G)(r3)             ; encoding: [0xe8,0x63,A,0bAAAAAA00]
                                        ;   fixup A - offset: 0, value: lo16(_G), kind: fixup_ppc_lo14

llvm-svn: 119133

print DBG_VALUE instructions.  This should unbreak the llvm-gcc-powerpc-darwin9
buildbot.

llvm-svn: 119132

llvm-svn: 119130

llvm-svn: 119129

llvm-svn: 119128

        lis r4, ha16(__ZL4init)         ; encoding: [0x3c,0x80,A,A]
                                        ;   fixup A - offset: 0, value: ha16(__ZL4init), kind: fixup_ppc_ha16

llvm-svn: 119127