llvm-svn: 77354

llvm-svn: 77347

Add reload and remat backscheduling.  This is disabled by default.  Use
-schedule-spills=true to enable.

llvm-svn: 77327

it is highly specific to the object file that will be generated in the end,
this introduces a new TargetLoweringObjectFile interface that is implemented
for each of ELF/MachO/COFF/Alpha/PIC16 and XCore.

Though still is still a brutal and ugly refactoring, this is a major step
towards goodness.

This patch also:
1. fixes a bunch of dangling pointer problems in the PIC16 backend.
2. disables the TargetLowering copy ctor which PIC16 was accidentally using.
3. gets us closer to xcore having its own crazy target section flags and
   pic16 not having to shadow sections with its own objects.
4. fixes wierdness where ELF targets would set CStringSection but not
   CStringSection_.  Factor the code better.
5. fixes some bugs in string lowering on ELF targets.

llvm-svn: 77294

llvm-svn: 77271

llvm-svn: 77266

MCSections soon instead of Section for all targets, and we need something to
own them.

llvm-svn: 77252

llvm-svn: 77247

llvm-svn: 77239

llvm-svn: 77238

llvm-svn: 77232

instead and drive things based off of that.

llvm-svn: 77184

change.

llvm-svn: 77171

llvm-svn: 77152

llvm-svn: 77148

just use a smallstring instead.

llvm-svn: 77144

to its classification.

llvm-svn: 77140

llvm-svn: 77138

llvm-svn: 77137

llvm-svn: 77134

Also, change MDString to use a StringRef.

llvm-svn: 77098

1. Spell SectionFlags::Writeable as "Writable".
2. Add predicates for deriving SectionFlags from SectionKinds.
3. Sink ELF-specific getSectionPrefixForUniqueGlobal impl into
   ELFTargetAsmInfo.
4. Fix SectionFlagsForGlobal to know that BSS/ThreadBSS has the
   BSS bit set (the real fix for PR4619).
5. Fix isSuitableForBSS to not put globals with explicit sections
   set in BSS (which was the reason #4 wasn't fixed earlier).
6. Remove my previous hack for PR4619.

llvm-svn: 77085

llvm-svn: 77039

 - Some clients which used DOUT have moved to DEBUG. We are deprecating the
   "magic" DOUT behavior which avoided calling printing functions when the
   statement was disabled. In addition to being unnecessary magic, it had the
   downside of leaving code in -Asserts builds, and of hiding potentially
   unnecessary computations.

llvm-svn: 77019

Revert the ConstantInt constructors back to their 2.5 forms where possible, thanks to contexts-on-types.  More to come.

llvm-svn: 77011

llvm-svn: 76987

llvm-svn: 76970

llvm-svn: 76966

LiveInterval, etc to raw_ostream.

llvm-svn: 76965

llvm-svn: 76963

llvm-svn: 76962

eliminating isNamed.

llvm-svn: 76946

%0 = malloc [3758096384 x i32]

The "malloc" instruction doesn't support 64-bits correctly (see PR715),
and should be removed.  Victor is actively working on fixing this, in 
the meantime just don't crash.

llvm-svn: 76899

 - Yay for '-'s and simplifications!

 - I kept StringMap::GetOrCreateValue for compatibility purposes, this can
   eventually go away. Likewise the StringMapEntry Create functions still follow
   the old style.

 - NIFC.

llvm-svn: 76888

llvm-svn: 76865

llvm-svn: 76849

Reorder if-else branches as suggested by Bill.

llvm-svn: 76808

Constify the key in Mi2IndexMap.

llvm-svn: 76801

llvm-svn: 76799

simplification.
 - NFC

llvm-svn: 76789