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llvm/lib/Target/Hexagon
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Chandler Carruth 36b699f2b1 [C++11] Add range based accessors for the Use-Def chain of a Value. 
This requires a number of steps.
1) Move value_use_iterator into the Value class as an implementation
   detail
2) Change it to actually be a *Use* iterator rather than a *User*
   iterator.
3) Add an adaptor which is a User iterator that always looks through the
   Use to the User.
4) Wrap these in Value::use_iterator and Value::user_iterator typedefs.
5) Add the range adaptors as Value::uses() and Value::users().
6) Update *all* of the callers to correctly distinguish between whether
   they wanted a use_iterator (and to explicitly dig out the User when
   needed), or a user_iterator which makes the Use itself totally
   opaque.

Because #6 requires churning essentially everything that walked the
Use-Def chains, I went ahead and added all of the range adaptors and
switched them to range-based loops where appropriate. Also because the
renaming requires at least churning every line of code, it didn't make
any sense to split these up into multiple commits -- all of which would
touch all of the same lies of code.

The result is still not quite optimal. The Value::use_iterator is a nice
regular iterator, but Value::user_iterator is an iterator over User*s
rather than over the User objects themselves. As a consequence, it fits
a bit awkwardly into the range-based world and it has the weird
extra-dereferencing 'operator->' that so many of our iterators have.
I think this could be fixed by providing something which transforms
a range of T&s into a range of T*s, but that *can* be separated into
another patch, and it isn't yet 100% clear whether this is the right
move.

However, this change gets us most of the benefit and cleans up
a substantial amount of code around Use and User. =]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203364 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-09 03:16:01 +00:00
..
InstPrinter Re-sort all of the includes with ./utils/sort_includes.py so that 2014-01-07 11:48:04 +00:00
MCTargetDesc Re-sort all of the includes with ./utils/sort_includes.py so that 2014-01-07 11:48:04 +00:00
TargetInfo Prune redundant dependencies in LLVMBuild.txt. 2013-12-11 00:30:57 +00:00
CMakeLists.txt [CMake] Let add_public_tablegen_target() provide intrinsics_gen, too. 2013-11-28 17:04:31 +00:00
Hexagon.h Access the TargetLoweringInfo from the TargetMachine object instead of caching it. The TLI may change between functions. No functionality change. 2013-06-19 21:36:55 +00:00
Hexagon.td Change the default of AsmWriterClassName and isMCAsmWriter. 2013-12-02 04:55:42 +00:00
HexagonAsmPrinter.cpp Change MCStreamer EmitInstruction interface to take subtarget info 2014-01-28 23:12:42 +00:00
HexagonAsmPrinter.h Remove leftovers from a non-MC asm printer. 2013-12-02 05:42:16 +00:00
HexagonCallingConv.td Hexagon V5 FP Support. 2012-05-10 20:20:25 +00:00
HexagonCallingConvLower.cpp Use SmallVectorImpl& instead of SmallVector to avoid repeating small vector size. 2013-07-14 04:42:23 +00:00
HexagonCallingConvLower.h Use SmallVectorImpl& instead of SmallVector to avoid repeating small vector size. 2013-07-14 04:42:23 +00:00
HexagonCFGOptimizer.cpp Print IR from Hexagon MI passes with -print-before/after-all. 2013-05-06 21:58:00 +00:00
HexagonCopyToCombine.cpp [C++11] Replace llvm::next and llvm::prior with std::next and std::prev. 2014-03-02 12:27:27 +00:00
HexagonExpandPredSpillCode.cpp Print IR from Hexagon MI passes with -print-before/after-all. 2013-05-06 21:58:00 +00:00
HexagonFixupHwLoops.cpp Re-sort all of the includes with ./utils/sort_includes.py so that 2014-01-07 11:48:04 +00:00
HexagonFrameLowering.cpp [C++11] Replace llvm::next and llvm::prior with std::next and std::prev. 2014-03-02 12:27:27 +00:00
HexagonFrameLowering.h Move the eliminateCallFramePseudoInstr method from TargetRegisterInfo 2013-02-21 20:05:00 +00:00
HexagonHardwareLoops.cpp [C++11] Replace llvm::next and llvm::prior with std::next and std::prev. 2014-03-02 12:27:27 +00:00
HexagonInstrFormats.td Even more spelling fixes for "instruction". 2013-09-28 13:42:22 +00:00
HexagonInstrFormatsV4.td Hexagon: Change insn class to support instruction encoding. 2013-02-14 19:57:17 +00:00
HexagonInstrInfo.cpp Replace PROLOG_LABEL with a new CFI_INSTRUCTION. 2014-03-07 06:08:31 +00:00
HexagonInstrInfo.h Re-sort all of the includes with ./utils/sort_includes.py so that 2014-01-07 11:48:04 +00:00
HexagonInstrInfo.td Hexagon: Pass to replace tranfer/copy instructions into combine instruction 2013-05-14 18:54:06 +00:00
HexagonInstrInfoV3.td Hexagon: Use multiclass for Jump instructions. 2013-05-01 21:37:34 +00:00
HexagonInstrInfoV4.td Fix typos 2014-02-25 04:21:15 +00:00
HexagonInstrInfoV5.td Hexagon: Fix switch cases in HexagonVLIWPacketizer.cpp. 2013-05-10 20:27:34 +00:00
HexagonIntrinsics.td Hexagon V5 intrinsics support. 2012-05-11 19:39:13 +00:00
HexagonIntrinsicsDerived.td Hexagon V5 intrinsics support. 2012-05-11 19:39:13 +00:00
HexagonIntrinsicsV3.td
HexagonIntrinsicsV4.td
HexagonIntrinsicsV5.td Remove tabs. 2012-07-19 00:25:04 +00:00
HexagonISelDAGToDAG.cpp Re-sort all of the includes with ./utils/sort_includes.py so that 2014-01-07 11:48:04 +00:00
HexagonISelLowering.cpp Remove unnecessary #includes. 2014-01-06 06:00:00 +00:00
HexagonISelLowering.h SelectionDAG: Teach the legalizer to split SETCC if VSELECT needs splitting too. 2013-11-13 01:57:54 +00:00
HexagonMachineFunctionInfo.cpp [weak vtables] Remove a bunch of weak vtables 2013-11-19 00:57:56 +00:00
HexagonMachineFunctionInfo.h Re-sort all of the includes with ./utils/sort_includes.py so that 2014-01-07 11:48:04 +00:00
HexagonMachineScheduler.cpp Replace PROLOG_LABEL with a new CFI_INSTRUCTION. 2014-03-07 06:08:31 +00:00
HexagonMachineScheduler.h Switch all uses of LLVM_OVERRIDE to just use 'override' directly. 2014-03-02 09:09:27 +00:00
HexagonMCInstLower.cpp Move the llvm mangler to lib/IR. 2014-01-07 21:19:40 +00:00
HexagonNewValueJump.cpp Re-sort all of the includes with ./utils/sort_includes.py so that 2014-01-07 11:48:04 +00:00
HexagonOperands.td Move all operand definitions into HexagonOperands.td 2012-12-04 05:00:31 +00:00
HexagonPeephole.cpp Even more spelling fixes for "instruction". 2013-09-28 13:42:22 +00:00
HexagonRegisterInfo.cpp Re-sort all of the includes with ./utils/sort_includes.py so that 2014-01-07 11:48:04 +00:00
HexagonRegisterInfo.h Remove getEHExceptionRegister and getEHHandlerRegister. 2013-10-07 13:39:22 +00:00
HexagonRegisterInfo.td Make SubRegIndex size mandatory, following r183020. 2013-05-31 23:45:26 +00:00
HexagonRemoveSZExtArgs.cpp [C++11] Add range based accessors for the Use-Def chain of a Value. 2014-03-09 03:16:01 +00:00
HexagonSchedule.td Hexagon: Change insn class to support instruction encoding. 2013-02-14 19:57:17 +00:00
HexagonScheduleV4.td Hexagon: Change insn class to support instruction encoding. 2013-02-14 19:57:17 +00:00
HexagonSelectCCInfo.td Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
HexagonSelectionDAGInfo.cpp Track IR ordering of SelectionDAG nodes 2/4. 2013-05-25 02:42:55 +00:00
HexagonSelectionDAGInfo.h Track IR ordering of SelectionDAG nodes 2/4. 2013-05-25 02:42:55 +00:00
HexagonSplitConst32AndConst64.cpp Re-sort all of the includes with ./utils/sort_includes.py so that 2014-01-07 11:48:04 +00:00
HexagonSplitTFRCondSets.cpp Print IR from Hexagon MI passes with -print-before/after-all. 2013-05-06 21:58:00 +00:00
HexagonSubtarget.cpp [weak vtables] Remove a bunch of weak vtables 2013-11-19 00:57:56 +00:00
HexagonSubtarget.h [weak vtables] Remove a bunch of weak vtables 2013-11-19 00:57:56 +00:00
HexagonTargetMachine.cpp Make the llvm mangler depend only on DataLayout. 2014-01-03 19:21:54 +00:00
HexagonTargetMachine.h Switch TargetTransformInfo from an immutable analysis pass that requires 2013-01-07 01:37:14 +00:00
HexagonTargetObjectFile.cpp Pass the Mangler by reference. 2014-02-08 14:53:28 +00:00
HexagonTargetObjectFile.h Switch all uses of LLVM_OVERRIDE to just use 'override' directly. 2014-03-02 09:09:27 +00:00
HexagonVarargsCallingConvention.h Correct word hyphenations 2013-12-05 05:44:44 +00:00
HexagonVLIWPacketizer.cpp [C++11] Replace llvm::next and llvm::prior with std::next and std::prev. 2014-03-02 12:27:27 +00:00
LLVMBuild.txt Add proper dependencies to LLVMBuild.txt in llvm/lib. 2013-12-10 05:39:34 +00:00
Makefile Hexagon: enable assembler output through the MC layer. 2012-04-12 17:55:53 +00:00