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llvm-6502/lib/Target/XCore
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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
..
Disassembler
InstPrinter
MCTargetDesc Switch all uses of LLVM_OVERRIDE to just use 'override' directly. 2014-03-02 09:09:27 +00:00
TargetInfo
CMakeLists.txt XCore target: Lower FRAME_TO_ARGS_OFFSET 2014-01-06 14:21:00 +00:00
LLVMBuild.txt
Makefile
README.txt
XCore.h XCore target: Lower FRAME_TO_ARGS_OFFSET 2014-01-06 14:21:00 +00:00
XCore.td
XCoreAsmPrinter.cpp [XCore] Add support for the "m" inline asm constraint. 2014-03-06 16:37:48 +00:00
XCoreCallingConv.td [XCore] Support functions returning more than 4 words. 2014-02-27 17:47:54 +00:00
XCoreFrameLowering.cpp Replace PROLOG_LABEL with a new CFI_INSTRUCTION. 2014-03-07 06:08:31 +00:00
XCoreFrameLowering.h
XCoreFrameToArgsOffsetElim.cpp Remove dead code. 2014-01-06 18:14:34 +00:00
XCoreInstrFormats.td
XCoreInstrInfo.cpp XCore target: addMemOperand as necessary 2014-02-18 11:21:53 +00:00
XCoreInstrInfo.h XCore target: Refactor the loading of constants into a register 2014-01-06 14:20:37 +00:00
XCoreInstrInfo.td [XCore] Fix call of absolute address. 2014-03-04 16:50:30 +00:00
XCoreISelDAGToDAG.cpp [XCore] Add support for the "m" inline asm constraint. 2014-03-06 16:37:48 +00:00
XCoreISelLowering.cpp [C++11] Replace llvm::next and llvm::prior with std::next and std::prev. 2014-03-02 12:27:27 +00:00
XCoreISelLowering.h [XCore] Support functions returning more than 4 words. 2014-02-27 17:47:54 +00:00
XCoreLowerThreadLocal.cpp [C++11] Add range based accessors for the Use-Def chain of a Value. 2014-03-09 03:16:01 +00:00
XCoreMachineFunctionInfo.cpp XCore target: Fix llvm.eh.return and EH info register handling 2014-02-18 11:21:48 +00:00
XCoreMachineFunctionInfo.h Replace PROLOG_LABEL with a new CFI_INSTRUCTION. 2014-03-07 06:08:31 +00:00
XCoreMCInstLower.cpp Move the llvm mangler to lib/IR. 2014-01-07 21:19:40 +00:00
XCoreMCInstLower.h
XCoreRegisterInfo.cpp XCore target: addMemOperand as necessary 2014-02-18 11:21:53 +00:00
XCoreRegisterInfo.h
XCoreRegisterInfo.td
XCoreSelectionDAGInfo.cpp [XCore] Target optimized library function __memcpy_4() 2014-02-27 13:39:07 +00:00
XCoreSelectionDAGInfo.h [XCore] Target optimized library function __memcpy_4() 2014-02-27 13:39:07 +00:00
XCoreSubtarget.cpp
XCoreSubtarget.h
XCoreTargetMachine.cpp XCore target: Lower FRAME_TO_ARGS_OFFSET 2014-01-06 14:21:00 +00:00
XCoreTargetMachine.h
XCoreTargetObjectFile.cpp Add back r201608, r201622, r201624 and r201625 2014-02-19 17:23:20 +00:00
XCoreTargetObjectFile.h Switch all uses of LLVM_OVERRIDE to just use 'override' directly. 2014-03-02 09:09:27 +00:00
XCoreTargetStreamer.h XCore: Fix typo in function name. 2014-01-27 11:50:13 +00:00
XCoreTargetTransformInfo.cpp Switch all uses of LLVM_OVERRIDE to just use 'override' directly. 2014-03-02 09:09:27 +00:00

README.txt 

To-do
-----

* Instruction encodings
* Tailcalls
* Investigate loop alignment
* Add builtins