| e2b83ab056836067e2c86ef22223a4c29fe267ce |
|
02-Aug-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Avoid creating dangling physreg live ranges during DCE.
LiveRangeEdit::eliminateDeadDefs() can delete a dead instruction that
reads unreserved physregs. This would leave the corresponding regunit
live interval dangling because we don't have shrinkToUses() for physical
registers.
Fix this problem by turning the instruction into a KILL instead of
deleting it. This happens in a landing pad in
test/CodeGen/X86/2012-05-19-CoalescerCrash.ll:
%vreg27<def,dead> = COPY %EDX<kill>; GR32:%vreg27
becomes:
KILL %EDX<kill>
An upcoming fix to the machine verifier will catch problems like this by
verifying regunit live intervals.
This fixes PR13498. I am not including the test case from the PR since
we already have one exposing the problem once the verifier is fixed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161182 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 2ec0cda5d5ede57022eb7dc5e7170f4fa420cb2b |
|
20-Jul-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Avoid folding loads that are unsafe to move.
LiveRangeEdit::foldAsLoad() can eliminate a register by folding a load
into its only use. Only do that when the load is safe to move, and it
won't extend any live ranges.
This fixes PR13414.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160575 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 834a9cdbb78c1a16c8ceecb018a324a3ba31c365 |
|
22-Jun-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Use MRI::isConstantPhysReg() to check remat feasibility.
Don't depend on LiveIntervals::hasInterval() to determine if a physreg
is reserved and constant.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159013 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 76ff7418361c1c80ce9d018bce63511a70bd7390 |
|
22-May-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Only erase virtregs with no uses left.
Also make sure registers aren't erased twice if the dead def mentions
the register twice.
This fixes PR12911.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157254 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 7ebed91fddbcd259d03c4b438719ac1ce2a4fc87 |
|
20-May-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Fix 12892.
Dead code elimination during coalescing could cause a virtual register
to be split into connected components. The following rewriting would be
confused about the already joined copies present in the code, but
without a corresponding value number in the live range.
Erase all joined copies instantly when joining intervals such that the
MI and LiveInterval representations are always in sync.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157135 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 20942dcd8634ad75091fe89669868cfebf74e869 |
|
19-May-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Allow LiveRangeEdit to be created with a NULL parent.
The dead code elimination with callbacks is still useful.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157100 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| c696c8bd35a8ab293879e821142dd9136201f16e |
|
19-May-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Modernize naming convention for class members.
No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157079 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| dda3a099a096588d435fdb855b52b0a203316de2 |
|
04-Apr-2012 |
Pete Cooper <peter_cooper@apple.com> |
Removed one last bad continue statement meant to be removed in r153914.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153975 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 2e267ae7b8caf7192a3793eb3b78937ff83f794d |
|
03-Apr-2012 |
Pete Cooper <peter_cooper@apple.com> |
Fixes to r153903. Added missing explanation of behaviour when the VirtRegMap is NULL. Also changed it in this case to just avoid updating the map, but live ranges or intervals will still get updated and created
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153914 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 789d5d85ba6e9259a8e0f0bcfbd06a59ad164512 |
|
03-Apr-2012 |
Pete Cooper <peter_cooper@apple.com> |
Moved LiveRangeEdit.h so that it can be called from other parts of the backend, not just libCodeGen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153906 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 8a06af96698537377275dd7848db69915638dd26 |
|
03-Apr-2012 |
Pete Cooper <peter_cooper@apple.com> |
Refactored the LiveRangeEdit interface so that MachineFunction, TargetInstrInfo, MachineRegisterInfo, LiveIntervals, and VirtRegMap are all passed into the constructor and stored as members instead of passed in to each method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153903 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 1485455be0310c6b24f096823029e08867531016 |
|
28-Feb-2012 |
Lang Hames <lhames@gmail.com> |
Kill off LiveRangeEdit::getNewVRegs and LiveRangeEdit::getUselessVRegs. These
methods are no longer needed now that LinearScan has gone away.
(Contains tweaks trivialSpillEverywhere to enable the removal of getNewVRegs).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151658 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 7842a741eb0e1baa35af8c3bb5884655c1edaa9e |
|
17-Feb-2012 |
Jim Grosbach <grosbach@apple.com> |
Tidy up.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150820 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 2d24e2a396a1d211baaeedf32148a3b657240170 |
|
20-Dec-2011 |
David Blaikie <dblaikie@gmail.com> |
Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146960 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 4777ebb767d1b590c05d502c4a7f6adef4e6d5d1 |
|
12-Dec-2011 |
Pete Cooper <peter_cooper@apple.com> |
Fixed register allocator splitting a live range on a spilling variable.
If we create new intervals for a variable that is being spilled, then those new intervals are not guaranteed to also spill. This means that anything reading from the original spilling value might not get the correct value if spills were missed.
Fixes <rdar://problem/10546864>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146428 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 5a96b3dad2f634c9081c8b2b6c2575441dc5a2bd |
|
07-Dec-2011 |
Evan Cheng <evan.cheng@apple.com> |
Add bundle aware API for querying instruction properties and switch the code
generator to it. For non-bundle instructions, these behave exactly the same
as the MC layer API.
For properties like mayLoad / mayStore, look into the bundle and if any of the
bundled instructions has the property it would return true.
For properties like isPredicable, only return true if *all* of the bundled
instructions have the property.
For properties like canFoldAsLoad, isCompare, conservatively return false for
bundles.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146026 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 2debd48ca790ac01be6e12e094fdf4fdcadc8364 |
|
13-Nov-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Rename SlotIndexes to match how they are used.
The old naming scheme (load/use/def/store) can be traced back to an old
linear scan article, but the names don't match how slots are actually
used.
The load and store slots are not needed after the deferred spill code
insertion framework was deleted.
The use and def slots don't make any sense because we are using
half-open intervals as is customary in C code, but the names suggest
closed intervals. In reality, these slots were used to distinguish
early-clobber defs from normal defs.
The new naming scheme also has 4 slots, but the names match how the
slots are really used. This is a purely mechanical renaming, but some
of the code makes a lot more sense now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144503 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 6d1fd0b979cb88809ebb77a24f4da69e1d67606b |
|
09-Aug-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Move CalculateRegClass to MRI::recomputeRegClass.
This function doesn't have anything to do with spill weights, and MRI
already has functions for manipulating the register class of a virtual
register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137123 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 9693d4c3f0d0e8c91e4748eb1c18799b1de7551c |
|
05-Jul-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Fix PR10277.
Remat during spilling triggers dead code elimination. If a phi-def
becomes unused, that may also cause live ranges to split into separate
connected components.
This type of splitting is different from normal live range splitting. In
particular, there may not be a common original interval.
When the split range is its own original, make sure that the new
siblings are also their own originals. The range being split cannot be
used as an original since it doesn't cover the new siblings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134413 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| e9bd4ea5fda4957c373a3bbc14803d9670041dcc |
|
05-May-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Add some statistics to the splitting and spilling frameworks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130931 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| bb30dd40ed0873e39fec4dfa321091a0c8d1abfc |
|
02-May-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Minimize the slot indexes spanned by register ranges created when splitting.
When an interfering live range ends at a dead slot index between two
instructions, make sure that the inserted copy instruction gets a slot index
after the dead ones. This makes it possible to avoid the interference.
Ideally, there shouldn't be interference ending at a deleted instruction, but
physical register coalescing can sometimes do that to sub-registers.
This fixes PR9823.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130687 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 3b7d917dec53a742fcb14802557ee75d35185968 |
|
21-Apr-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Add debug output for rematerializable instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129883 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 806562cc59ad35e6c742abe9109e9b8090b3f820 |
|
15-Apr-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Remember to set flag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129579 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 1edc3cf65d54130542fc91bac67ecf616ef88d48 |
|
11-Apr-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Don't shrink live ranges after dead code elimination unless it is going to help.
In particular, don't repeatedly recompute the PIC base live range after rematerialization.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129275 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 3520019931c2bad615c35edcb943cd1e8582ebac |
|
05-Apr-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
When dead code elimination removes all but one use, try to fold the single def into the remaining use.
Rematerialization can leave single-use loads behind that we might as well fold whenever possible.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128918 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| f22ca3fe5f0cfbb832cf41270f97cf5c0134fd7b |
|
30-Mar-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Treat clones the same as their origin.
When DCE clones a live range because it separates into connected components,
make sure that the clones enter the same register allocator stage as the
register they were cloned from.
For instance, clones may be split even when they where created during spilling.
Other registers created during spilling are not candidates for splitting or even
(re-)spilling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128524 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 6094bd87d845afabba5b99ec4848fa6116bac682 |
|
29-Mar-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Recompute register class and hint for registers created during spilling.
The spill weight is not recomputed for an unspillable register - it stays infinite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128490 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| cf610d07de3ba4929bb5d00e084877dd974b44a1 |
|
29-Mar-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Remember to use the correct register when rematerializing for snippets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128469 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 2ef661b0e8de0d4186c5f9cc990adce0a2493b17 |
|
29-Mar-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Properly enable rematerialization when spilling after live range splitting.
The instruction to be rematerialized may not be the one defining the register
that is being spilled. The traceSiblingValue() function sees through sibling
copies to find the remat candidate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128449 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 1e6c65dba706de80f5a4ceb8a1fc86bc3d0a61c6 |
|
23-Mar-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Notify the delegate before removing dead values from a live interval.
The register allocator needs to know when the range shrinks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128145 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 6a3dbd3b25bbc99bd1a233d6a74ddea3493ba6ac |
|
17-Mar-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Dead code elimination may separate the live interval into multiple connected components.
I have convinced myself that it can only happen when a phi value dies. When it
happens, allocate new virtual registers for the components.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127827 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 1d5b84508173b93faf513032b3847152e6060791 |
|
16-Mar-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Add a LiveRangeEdit delegate callback before shrinking a live range.
The register allocator needs to adjust its live interval unions when that happens.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127774 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| cc5c4296fda7270e8394626d7254596f5f9c8d82 |
|
16-Mar-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Erase virtual registers that are unused after DCE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127773 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| c46570dc05851395829bef904bb6ddb1260400d1 |
|
16-Mar-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Clarify debugging output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127771 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 7792e980c43536814ea42448db9799b4da32fef6 |
|
13-Mar-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Tell the register allocator about new unused virtual registers.
This allows the allocator to free any resources used by the virtual register,
including physical register assignments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127560 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 92a55f4bdd120cdd3bb5a004c792d4d24a940311 |
|
09-Mar-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Add a LiveRangeEdit::Delegate protocol.
This will we used for keeping register allocator data structures up to date
while LiveRangeEdit is trimming live intervals.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127300 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 5881799d0cccbd814ec1b0f0509df9be1f63c6cb |
|
08-Mar-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Delete dead code after rematerializing.
LiveRangeEdit::eliminateDeadDefs() will eventually be used by coalescing,
splitting, and spilling for dead code elimination. It can delete chains of dead
instructions as long as there are no dependency loops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127287 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 1973b3e2541f95c87e4acb7e134362ff306ec9ed |
|
07-Mar-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Make the UselessRegs argument optional in the LiveRangeEdit constructor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127181 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| fd38917d4d040759d75e9d1f4e2c885fb40ba2d7 |
|
19-Feb-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
This method belonged in VirtRegMap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126002 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| e324f6e05ff7a157347edb48203db0250805f748 |
|
18-Feb-2011 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Use VirtRegMap's Virt2SplitMap to keep track of the original live range before splitting.
All new virtual registers created for spilling or splitting point back to their original.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125980 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| b80e973c95034e5754d888140497a9658a7c1ded |
|
10-Nov-2010 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Simplify the LiveRangeEdit::canRematerializeAt() interface a bit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118661 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| a37d5cf3425eb93a25cc5da2bbf9b6a47c757b45 |
|
01-Nov-2010 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Don't assign new registers created during a split to the same stack slot, but
give them individual stack slots once the are actually spilled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117945 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| f1583ae84a8eeb0f6c0f81bd5bf189bdc9eaecb2 |
|
21-Oct-2010 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Remember to keep track of rematted values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116962 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 080c316ff8a066cd164d9a8f92df509d8cb63110 |
|
21-Oct-2010 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Move some of the InlineSpiller rematerialization code into LiveRangeEdit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116951 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
|
| 2a0180fbff4870995482d96986ad780ab9de8af4 |
|
15-Oct-2010 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Move stack slot assignments into LiveRangeEdit.
All registers created during splitting or spilling are assigned to the same
stack slot as the parent register.
When splitting or rematting, we may not spill at all. In that case the stack
slot is still assigned, but it will be dead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116546 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
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15-Oct-2010 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Create a new LiveRangeEdit class to keep track of the new registers created when
splitting or spillling, and to help with rematerialization.
Use LiveRangeEdit in InlineSpiller and SplitKit. This will eventually make it
possible to share remat code between InlineSpiller and SplitKit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116543 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/LiveRangeEdit.cpp
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