remove another magic number.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100606 91177308-0d34-0410-b5e6-96231b3b80d8

Three changes:
1. Introduce some enums and accessors in the InlineAsm class
   that eliminate a ton of magic numbers when handling inline
   asm SDNode.
2. Add a new MDNodeSDNode selection dag node type that holds
   a MDNode (shocking!)
3. Add a new argument to ISD::INLINEASM nodes that hold !srcloc
   metadata, propagating it to the instruction emitter, which
   drops it.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100605 91177308-0d34-0410-b5e6-96231b3b80d8

fix a crash on invalid metadata, e.g.:  call i32 @foo(), XXXX

We would return the error without inserting the new instruction
into the program, so it wouldn't get deallocated, and an abort
would trigger when the module was deleted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100602 91177308-0d34-0410-b5e6-96231b3b80d8

Fix memory leaks for external symbol name strings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100601 91177308-0d34-0410-b5e6-96231b3b80d8

Clean up some signedness oddities in this code noticed by clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100599 91177308-0d34-0410-b5e6-96231b3b80d8

Move printing of target-indepedent DEBUG_VALUE comments
into AsmPrinter.  Target-dependent form is still generated
by FastISel and still handled in X86 code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100596 91177308-0d34-0410-b5e6-96231b3b80d8

Post regalloc LICM. Work in progress.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100592 91177308-0d34-0410-b5e6-96231b3b80d8

Do not emit specification DIE with DW_AT_specification attribute for member functions of a funcation local class. This trips gdb's partial scan of DIEs at load time. Fixes Radar 7833483.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100586 91177308-0d34-0410-b5e6-96231b3b80d8

Let that which does not matter truly slide.

This test only cares about alignment, so don't test for other cruft.
An upcoming llvm-gcc patch needs this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100584 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a number of clang -Wsign-compare warnings that didn't have an obvious
solution.  The only reason these don't fire with gcc-4.2 is that gcc turns off
part of -Wsign-compare in C++ on accident.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100581 91177308-0d34-0410-b5e6-96231b3b80d8

Revert 100573, it's causing some testsuite problems.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100578 91177308-0d34-0410-b5e6-96231b3b80d8

Move printing of DEBUG_VALUE comments to target-independent place.
There is probably a more elegant way to do this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100573 91177308-0d34-0410-b5e6-96231b3b80d8

Expand SELECT and SELECT_CC for NEON vector types.
Radar 7770501.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100568 91177308-0d34-0410-b5e6-96231b3b80d8

Allow for the possibility that a debug-value points
to a SDNode that didn't have code generated for it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100566 91177308-0d34-0410-b5e6-96231b3b80d8

Reverting 100530 & 100531 due to regressions in the GDB test suite.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100563 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR6696 and PR6663

When a frame pointer is not otherwise required, and dynamic stack alignment
is necessary solely due to the spilling of a register with larger alignment
requirements than the default stack alignment, the frame pointer can be both
used as a general purpose register and a frame pointer. That goes poorly, for
obvious reasons. This patch brings back a bit of old logic for identifying
the use of such registers and conservatively reserves the frame pointer
during register allocation in such cases.

For now, implement for X86 only since it's 32-bit linux which is hitting this,
and we want a targeted fix for 2.7. As a follow-on, this will be expanded
to handle other targets, as theoretically the problem could arise elsewhere
as well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100559 91177308-0d34-0410-b5e6-96231b3b80d8

Make this hack more specific to the Apple gcc 4.2 non-LLVM compiler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100556 91177308-0d34-0410-b5e6-96231b3b80d8

Don't try to collapse DomainValues onto an incompatible SSE domain.
This fixes the Bullet regression on i386/nocona.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100553 91177308-0d34-0410-b5e6-96231b3b80d8

performance: get rid of repeated dereferencing of use_iterator by caching its result

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100550 91177308-0d34-0410-b5e6-96231b3b80d8

make more two predicates constant

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100549 91177308-0d34-0410-b5e6-96231b3b80d8

performance: get rid of repeated dereferencing of use_iterator by caching its result

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100547 91177308-0d34-0410-b5e6-96231b3b80d8

const-ize predicate ValueIsOnlyUsedLocallyOrStoredToOneGlobal

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100546 91177308-0d34-0410-b5e6-96231b3b80d8

use CallSite to access calls vs. invokes uniformly
and remove assumptions about operand order

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100544 91177308-0d34-0410-b5e6-96231b3b80d8

this accessor doesn't need to copy the string.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100542 91177308-0d34-0410-b5e6-96231b3b80d8

enhance SMDiagnostic to also maintain a pointer to the SourceMgr.
Add a simplified constructor for clients that don't have locations
like "file not found" errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100538 91177308-0d34-0410-b5e6-96231b3b80d8

Code clean up. Move includes from VirtRegRewriter.h to VirtRegRewriter.cpp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100532 91177308-0d34-0410-b5e6-96231b3b80d8

Revise debug info machinery to digest nested functions and classes.

A certain GDB testsuite case (local.cc) has a function nested inside a
class nested inside another function.  GCC presents the innermost
function to llvm-convert first.  Heretofore, the debug info mistakenly
placed the inner function at module scope.  This patch walks the GCC
context links and instantiates the outer class and function so the
debug info is properly nested.  Radar 7426545.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100530 91177308-0d34-0410-b5e6-96231b3b80d8

Adding SAFECode to the list of projects that work with LLVM 2.7.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100525 91177308-0d34-0410-b5e6-96231b3b80d8

Remove assert to treat memmove and memset like memcpy

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100521 91177308-0d34-0410-b5e6-96231b3b80d8

Use a ManagedCleanup to prevent leaking the PassRegistrar map.  In breaks the
use case where someone wants to resurrect LLVM after calling llvm_shutdown,
but I'm not aware of any clients that are affected by this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100519 91177308-0d34-0410-b5e6-96231b3b80d8

Avoid overflowing a signed integer which triggers undefined behaviour.
Overflowing an unsigned integer is fine and behaves as you would expect.
Also fix a pasto, allowing SignExtend64 to take a 64-bit argument.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100517 91177308-0d34-0410-b5e6-96231b3b80d8

Add a const qualifier.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100515 91177308-0d34-0410-b5e6-96231b3b80d8

propagate cookie management out one layer of function calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100510 91177308-0d34-0410-b5e6-96231b3b80d8

report errors through LLVMContext's inline asm handler if available.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100509 91177308-0d34-0410-b5e6-96231b3b80d8

Give MachineModuleInfo an actual Module*.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100508 91177308-0d34-0410-b5e6-96231b3b80d8

give LLVMContext an inline asm diagnostic hook member.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100506 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unnecessary include.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100505 91177308-0d34-0410-b5e6-96231b3b80d8

give the SourceMgr object a cookie.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100504 91177308-0d34-0410-b5e6-96231b3b80d8

Give llvm::SourceMgr the ability to have a client-specified
diagnostic handler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100503 91177308-0d34-0410-b5e6-96231b3b80d8

Remove MaybeOwningPtr. We're going to use reference-counting instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100499 91177308-0d34-0410-b5e6-96231b3b80d8

Properly enable load clustering.

Operand 2 on a load instruction does not have to be a RegisterSDNode for this to
work.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100497 91177308-0d34-0410-b5e6-96231b3b80d8

Fix an obvious copy-n-paste bug. It's not known to cause any miscompilation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100494 91177308-0d34-0410-b5e6-96231b3b80d8

Give AsmParser an option to control whether it finalizes
the stream.  New demo:

$ clang asm.c -S -o - -emit-llvm | llc -filetype=obj -o t.o
$ otool -tv t.o
t.o:
(__TEXT,__text) section
_foo:
0000000000000000 subq $0x08,%rsp
0000000000000004 movl %edi,(%rsp)
0000000000000007 movl %edi,%eax
0000000000000009 incl %eax
000000000000000b movl %eax,(%rsp)
000000000000000e movl %eax,0x04(%rsp)
0000000000000012 addq $0x08,%rsp
0000000000000016 ret

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100492 91177308-0d34-0410-b5e6-96231b3b80d8

add .o file writing for inline asm in llc.  Here's a silly
demo:

$ clang asm.c -S -o - -emit-llvm | llc -filetype=obj -o t.o
<inline asm>:1:2: error: unrecognized instruction
abc incl    %eax
^
LLVM ERROR: Error parsing inline asm

Only problem seems to be that the parser finalizes OutStreamer
at the end of the first inline asm, which isn't what we want.
For example:

$ cat asm.c
int foo(int X) {
 __asm__ ("incl    %0" : "+r" (X));
 return X;
}
$ clang asm.c -S -o - -emit-llvm | llc
...
subq $8, %rsp
movl %edi, (%rsp)
movl %edi, %eax
## InlineAsm Start
incl    %eax
## InlineAsm End
movl %eax, (%rsp)
movl %eax, 4(%rsp)
addq $8, %rsp
ret
$ clang asm.c -S -o - -emit-llvm | llc -filetype=obj -o t.o
$ otool -tv t.o
t.o:
(__TEXT,__text) section
_foo:
0000000000000000 subq $0x08,%rsp
0000000000000004 movl %edi,(%rsp)
0000000000000007 movl %edi,%eax
0000000000000009 incl %eax
$

don't stop at inc!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100491 91177308-0d34-0410-b5e6-96231b3b80d8

add a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100490 91177308-0d34-0410-b5e6-96231b3b80d8

tidy #includes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100489 91177308-0d34-0410-b5e6-96231b3b80d8

Output floating point representations in DWARF format. This is done by outputing
the FP encoding directly as a hex representation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100487 91177308-0d34-0410-b5e6-96231b3b80d8

update unit test for api change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100486 91177308-0d34-0410-b5e6-96231b3b80d8

stringref-ize the MemoryBuffer::get apis.  This requires
a co-committed clang patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100485 91177308-0d34-0410-b5e6-96231b3b80d8

Add nounwind.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100482 91177308-0d34-0410-b5e6-96231b3b80d8

Fix ADD32rr_alt instruction encoding bug. Patch by Marius Wachtler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100480 91177308-0d34-0410-b5e6-96231b3b80d8

fix a really nasty bug that Evan was tracking in SCCP.  When resolving
undefs in branches/switches, we have two cases: a branch on a literal
undef or a branch on a symbolic value which is undef.  If we have a
literal undef, the code was correct: forcing it to a constant is the
right thing to do.

If we have a branch on a symbolic value that is undef, we should force
the symbolic value to a constant, which then makes the successor block
live.  Forcing the condition of the branch to being a constant isn't
safe if later paths become live and the value becomes overdefined.  This
is the case that 'forcedconstant' is designed to handle, so just use it.

This fixes rdar://7765019 but there is no good testcase for this, the
one I have is too insane to be useful in the future.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100478 91177308-0d34-0410-b5e6-96231b3b80d8

some code cleanups, use SwitchInst::findCaseValue, reduce indentation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100468 91177308-0d34-0410-b5e6-96231b3b80d8

Code clean up.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100467 91177308-0d34-0410-b5e6-96231b3b80d8

Remove FIXME.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100466 91177308-0d34-0410-b5e6-96231b3b80d8

Introduce MaybeOwningPtr, a smart pointer that may (or may not) have
ownership over the pointer it contains. Useful when we want to
communicate ownership while still having several clients holding on to
the same pointer *without* introducing reference counting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100463 91177308-0d34-0410-b5e6-96231b3b80d8

Fix OProfileJITEventListener build for new DebugLoc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100461 91177308-0d34-0410-b5e6-96231b3b80d8

Add a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100459 91177308-0d34-0410-b5e6-96231b3b80d8

lowering a volatile llvm.memcpy to a libc memcpy is ok.
PR6779

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100457 91177308-0d34-0410-b5e6-96231b3b80d8

Don't do code sinking on unreachable blocks. It's unprofitable and hazardous.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100455 91177308-0d34-0410-b5e6-96231b3b80d8

Add an isReachableFromEntry to MachineDominators, following the one
in Dominators.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100454 91177308-0d34-0410-b5e6-96231b3b80d8

Update to note that clang has a baseline now. Dropping x86-32 for MacOS.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100447 91177308-0d34-0410-b5e6-96231b3b80d8

don't use emitlabel in the arm asm printer yet, the order
isn't well specified.  ARM really needs to have its instprinter
finished at some point.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100439 91177308-0d34-0410-b5e6-96231b3b80d8

Push const through the regex engine. Fixes some of the warnings in PR6616.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100438 91177308-0d34-0410-b5e6-96231b3b80d8

fix a couple problems I introduced handling symbols
with spaces in them.  Sym->getName()  !=   OS << *Sym

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100434 91177308-0d34-0410-b5e6-96231b3b80d8

Disambiguate else.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100423 91177308-0d34-0410-b5e6-96231b3b80d8

trim some prototypes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100420 91177308-0d34-0410-b5e6-96231b3b80d8

remove the now-redundant MMI pointer in SelectionDAG.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100419 91177308-0d34-0410-b5e6-96231b3b80d8

hopefully sate the clang self host build, which is apparently
instantiating some folding set stuff that GCC isn't, requiring
some types to not be incomplete.

I don't know if clang is right or wrong, but unbreaking the
bot is goodness.  Here's the broken build:
http://google1.osuosl.org:8011/builders/clang-x86_64-darwin10-selfhost/builds/1813/steps/compile.llvm.stage2/logs/stdio

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100418 91177308-0d34-0410-b5e6-96231b3b80d8

remove some redundant MMI arguments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100417 91177308-0d34-0410-b5e6-96231b3b80d8

unthread MMI from FastISel

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100416 91177308-0d34-0410-b5e6-96231b3b80d8

remove the MMI pointer from MachineFrameInfo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100415 91177308-0d34-0410-b5e6-96231b3b80d8

enhance MachineFunction to have a MMI pointer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100414 91177308-0d34-0410-b5e6-96231b3b80d8

Add MC and LTO, two terms I just had to explain on IRC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100413 91177308-0d34-0410-b5e6-96231b3b80d8

simplify code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100412 91177308-0d34-0410-b5e6-96231b3b80d8

prune #includes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100411 91177308-0d34-0410-b5e6-96231b3b80d8

privatize more stuff, eliminate vtables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100410 91177308-0d34-0410-b5e6-96231b3b80d8

reprivatize now that DwarfWriter is gone.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100409 91177308-0d34-0410-b5e6-96231b3b80d8

prune #includes, MMI can never be null

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100408 91177308-0d34-0410-b5e6-96231b3b80d8

prune #includes, realize the MMI can never be null.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100407 91177308-0d34-0410-b5e6-96231b3b80d8

finally blast DwarfWriter away.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100406 91177308-0d34-0410-b5e6-96231b3b80d8

change AsmPrinter to use DwarfDebug/DwarfException directly
instead of going through DwarfWriter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100405 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of traling whitespaces.  No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100404 91177308-0d34-0410-b5e6-96231b3b80d8

The disassembler impl. of MCDisassembler::getInstruction() was using the pattern
  uint32_t insn;
  MemoryObject.readBytes(Address, 4, (uint8_t*)&insn, NULL)

to read 4 bytes of memory contents into a 32-bit uint variable.  This leaves the
interpretation of byte order up to the host machine and causes PPC test cases of
arm-tests, neon-tests, and thumb-tests to fail.  Fixed to use a byte array for
reading the memory contents and shift the bytes into place for the 32-bit uint
variable in the ARM case and 16-bit halfword in the Thumb case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100403 91177308-0d34-0410-b5e6-96231b3b80d8

implement EmitFunctionEntryLabel to emit the .cc_top directive,
allowing xcore to use the normal runOnMachineFunction
implementation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100402 91177308-0d34-0410-b5e6-96231b3b80d8

don't reference DwarfWriter

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100401 91177308-0d34-0410-b5e6-96231b3b80d8

trim some spurious references to DwarfWriter.  SDIsel really doesn't
need it anymore, so don't addRequire it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100400 91177308-0d34-0410-b5e6-96231b3b80d8

prune some #includes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100399 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate DwarfDebug::shouldEmit, which is the same now as MMI::hasDebugInfo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100386 91177308-0d34-0410-b5e6-96231b3b80d8

fix a regression on 2009-08-17-DebugInfo.m

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100385 91177308-0d34-0410-b5e6-96231b3b80d8

Replace TSFlagsFields and TSFlagsShifts with a simpler TSFlags field.

When a target instruction wants to set target-specific flags, it should simply
set bits in the TSFlags bit vector defined in the Instruction TableGen class.

This works well because TableGen resolves member references late:

class I : Instruction {
  AddrMode AM = AddrModeNone;
  let TSFlags{3-0} = AM.Value;
}

let AM = AddrMode4 in
def ADD : I;

TSFlags gets the expected bits from AddrMode4 in this example.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100384 91177308-0d34-0410-b5e6-96231b3b80d8

selection dag doesn't need DwarfWriter, remove some tendrils.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100382 91177308-0d34-0410-b5e6-96231b3b80d8

fastisel doesn't need DwarfWriter, remove some tendricles.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100381 91177308-0d34-0410-b5e6-96231b3b80d8

Temporarily remove to disable building of ARM disassembler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100380 91177308-0d34-0410-b5e6-96231b3b80d8

Re-apply 100265 but instead disable building of ARM disassembly for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100379 91177308-0d34-0410-b5e6-96231b3b80d8

Reverting 100265 to try to get buildbots green again. Lots of self-hosting buildbots started complaining since this commit. Also xfail ARM disassembly tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100378 91177308-0d34-0410-b5e6-96231b3b80d8

just have all targets create the DwarfWriter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100377 91177308-0d34-0410-b5e6-96231b3b80d8

simplify various getAnalysisUsage implementations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100376 91177308-0d34-0410-b5e6-96231b3b80d8

nuke DwarfPrinter

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100375 91177308-0d34-0410-b5e6-96231b3b80d8

make DwarfException not inherit from DwarfPrinter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100374 91177308-0d34-0410-b5e6-96231b3b80d8