preventing the emission of the NOP on Darwin for a
function with no actual code.  From timberwolfmc
with TEST=optllcdbg.

llvm-svn: 102843

	##DEBUG_VALUE: runOnMachineFunction:this <- RDI+0
	##DEBUG_VALUE: runOnMachineFunction:fn <- RSI+0
	##DEBUG_VALUE: DeadDefs <- undef ## SimpleRegisterCoalescing.cpp:2706
	##DEBUG_VALUE: getRegInfo:this <- [%rsp+$56]+$0
	##DEBUG_VALUE: getTarget:this <- [%rsp+$56]+$0

llvm-svn: 102655

alignment of globals to the preferred alignment, but only when
there is no section specified on the global (by far the common
case).

llvm-svn: 102515

llvm-svn: 102486

ForcedAlignBits argument, tweaking the single client of it.

llvm-svn: 102484

llvm-svn: 102483

llvm-svn: 102453

should fix some "g++.dg-struct-layout-1" failures, 
rdar://7886017

llvm-svn: 102421

llvm-svn: 102401

otherwise labels get incorrectly merged.  We handled this by emitting a 
".byte 0", but this isn't correct on thumb/arm targets where the text segment
needs to be a multiple of 2/4 bytes.  Handle this by emitting a noop.  This
is more gross than it should be because arm/ppc are not fully mc'ized yet.

This fixes rdar://7908505

llvm-svn: 102400

alignment of globals with a specified alignment, we fix
common variables to obey their alignment.  Add a comment
explaining why this behavior is important.

llvm-svn: 102365

llvm-svn: 102359

preferred alignment unless they were common or some other special
case.

llvm-svn: 102300

in other types.  fix this by only bumping zero-byte globals
up to a single byte if the *entire global* is zero size,
fixing PR6340.

This also fixes empty arrays etc to be handled correctly,
and only does this on subsection-via-symbols targets (aka
darwin) which is the only place where this matters.

llvm-svn: 101879

llvm-svn: 101640

llvm-svn: 101575

merge XCore's section into MCSectionELF

llvm-svn: 100812

llvm-svn: 100709

llvm-svn: 100700

llvm-svn: 100638

TimePassesIsEnabled. This should allow make check to pass.

llvm-svn: 100618

llvm-svn: 100615

into AsmPrinter.  Target-dependent form is still generated
by FastISel and still handled in X86 code.

llvm-svn: 100596

llvm-svn: 100578

There is probably a more elegant way to do this.

llvm-svn: 100573

llvm-svn: 100510

llvm-svn: 100505

instead of going through DwarfWriter.

llvm-svn: 100405

llvm-svn: 100377

2) change DwarfDebug to not inherit from DwarfPrinter.

llvm-svn: 100372

llvm-svn: 100346

them for consistency.

llvm-svn: 100345

llvm-svn: 100343

llvm-svn: 100342

llvm-svn: 100340

llvm-svn: 100339

llvm-svn: 100338

"Print" methods to "Emit".  Emit is something that goes
to an mc streamer, Print is something that goes to a
raw_ostream (for inline asm) 

llvm-svn: 100337

enough to warrant caching in AsmPrinter, so remove it.

llvm-svn: 100336

from the AsmPrinter interface.

llvm-svn: 100331