Commit Graph

2278 Commits

Author SHA1 Message Date
Dan Gohman
54e4c36a73 Rewrite the SDep class, and simplify some of the related code.
The Cost field is removed. It was only being used in a very limited way,
to indicate when the scheduler should attempt to protect a live register,
and it isn't really needed to do that. If we ever want the scheduler to
start inserting copies in non-prohibitive situations, we'll have to
rethink some things anyway.

A Latency field is added. Instead of giving each node a single
fixed latency, each edge can have its own latency. This will eventually
be used to model various micro-architecture properties more accurately.

The PointerIntPair class and an internal union are now used, which
reduce the overall size.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60806 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-09 22:54:47 +00:00
Bill Wendling
74c3765291 Add sub/mul overflow intrinsics. This currently doesn't have a
target-independent way of determining overflow on multiplication. It's very
tricky. Patch by Zoltan Varga!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60800 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-09 22:08:41 +00:00
Duncan Sands
47d9dcc584 Fix PR3117: not all nodes being legalized. The
essential problem was that the DAG can contain
random unused nodes which were never analyzed.
When remapping a value of a node being processed,
such a node may become used and need to be analyzed;
however due to operands being transformed during
analysis the node may morph into a different one.
Users of the morphing node need to be updated, and
this wasn't happening.  While there I added a bunch
of documentation and sanity checks, so I (or some
other poor soul) won't have to scratch their head
over this stuff so long trying to remember how it
was all supposed to work next time some obscure
problem pops up!  The extra sanity checking exposed
a few places where invariants weren't being preserved,
so those are fixed too.  Since some of the sanity
checking is expensive, I added a flag to turn it
on.  It is also turned on when building with
ENABLE_EXPENSIVE_CHECKS=1.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60797 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-09 21:33:20 +00:00
Duncan Sands
174f938bd0 Fix comment typo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60698 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-08 14:10:36 +00:00
Dan Gohman
c8a1a3c426 Factor out the code for sign-extending/truncating gep indices
and use it in x86 address mode folding. Also, make
getRegForValue return 0 for illegal types even if it has a
ValueMap for them, because Argument values are put in the
ValueMap. This fixes PR3181.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60696 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-08 07:57:47 +00:00
Dan Gohman
2e3e5bf427 Move createVirtualRegister out-of-line.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60684 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-08 04:54:11 +00:00
Dan Gohman
2ce7f2068f Drop the reg argument to isRegReDefinedByTwoAddr, which was redundant.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60586 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-05 05:45:42 +00:00
Dan Gohman
d71703deec Have PseudoSourceValue override Value::dump, so that it works
on PseudoSourceValue values. This also fixes a FIXME in
lib/VMCode/AsmWriter.cpp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60507 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03 21:37:21 +00:00
Dan Gohman
8cf7713753 Extend X86's addFrameReference to add a MachineMemOperand for
the frame reference. This will help post-RA scheduling determine
that spills to distinct stack slots are independent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60486 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03 18:11:40 +00:00
Dan Gohman
03e7d834d5 Add an explicit keyword.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60457 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03 01:55:47 +00:00
Dan Gohman
92faff2e4c Replace a #include with a forward-declaration.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60456 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03 01:53:18 +00:00
Bill Wendling
13d6d446f6 Expand getVTList, getNodeValueTypes, and SelectNodeTo to handle more value types.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60381 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-01 23:28:22 +00:00
Duncan Sands
aaffa05d0a There are no longer any places that require a
MERGE_VALUES node with only one operand, so get
rid of special code that only existed to handle
that possibility.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60349 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-01 11:41:29 +00:00
Evan Cheng
884c70c912 On x86 favors folding short immediate into some arithmetic operations (e.g. add, and, xor, etc.) because materializing an immediate in a register is expensive in turns of code size.
e.g.
movl 4(%esp), %eax
addl $4, %eax

is 2 bytes shorter than

movl $4, %eax
addl 4(%esp), %eax


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60139 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27 00:49:46 +00:00
Dan Gohman
2ad8245566 LiveRanges are represented as half-open ranges. Fix the findLiveInMBBs code
and the LiveInterval.h top-level comment and accordingly. This fixes blocks
having spurious live-in registers in boundary cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60092 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26 05:50:31 +00:00
Dan Gohman
21d9003087 Initial support for anti-dependence breaking. Currently this code does not
introduce any new spilling; it just uses unused registers.

Refactor the SUnit topological sort code out of the RRList scheduler and
make use of it to help with the post-pass scheduler.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59999 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-25 00:52:40 +00:00
Dan Gohman
ad38b6e4e5 Move the scheduler constructor functions to SchedulerRegistry.h, to
simplify header dependencies for front-ends that just want to choose
a scheduler and don't need all the scheduling machinery declarations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59978 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24 19:53:21 +00:00
Dan Gohman
d59b083d22 Fix an unused-parameter warning.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59977 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24 19:51:59 +00:00
Dan Gohman
942b8c8533 Check in the rest of this change. The isAntiDep flag needs to be passed
to removePred because an SUnit can both data-depend and anti-depend
on the same SUnit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59969 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24 17:33:52 +00:00
Duncan Sands
25cf2275ff If the type legalizer actually legalized anything
(this doesn't happen that often, since most code
does not use illegal types) then follow it by a
DAG combiner run that is allowed to generate
illegal operations but not illegal types.  I didn't
modify the target combiner code to distinguish like
this between illegal operations and illegal types,
so it will not produce illegal operations as well
as not producing illegal types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59960 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24 14:53:14 +00:00
Duncan Sands
03228089d5 Rename SetCCResultContents to BooleanContents. In
practice these booleans are mostly produced by SetCC,
however the concept is more general.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59911 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-23 15:47:28 +00:00
Anton Korobeynikov
7751ad92da Make a convenient helper for printing offsets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59872 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-22 16:15:34 +00:00
Bill Wendling
253174bf50 Cleanup of the [SU]ADDO type legalization code. Patch by Duncan!
"It simplifies the type legalization part a bit, and produces better code by
teaching SelectionDAG about the extra bits in an i8 SADDO/UADDO node.  In
essence, I spontaneously decided that on x86 this i8 boolean result would be
either 0 or 1, and on other platforms 0/1 or 0/-1, depending on whether the
platform likes it's boolean zero extended or sign extended."


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59864 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-22 07:24:01 +00:00
Dan Gohman
cddd428459 Add a flag to SDep for tracking which edges are anti-dependence edges.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59785 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-21 02:27:52 +00:00
Bill Wendling
e1a6d160e5 Update comment to reflect a semblance of reality.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59784 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-21 02:24:44 +00:00
Dan Gohman
98adea1149 Rename SDep's isSpecial to isArtificial, to make this field a little
less mysterious.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59782 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-21 02:18:56 +00:00
Bill Wendling
1c55a9c0cc Rename "ADDO" to "SADDO" and "UADDO". The "UADDO" isn't equivalent to "ADDC"
because the boolean it returns to indicate an overflow may not be treated like
as a flag. It could be stored to memory, for instance.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59780 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-21 02:12:42 +00:00
Bill Wendling
7cdc3c8ad2 Implement the sadd_with_overflow intrinsic. This is converted into
"ISD::ADDO". ISD::ADDO is lowered into a target-independent form that does the
addition and then checks if the result is less than one of the operands. (If it
is, then there was an overflow.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59779 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-21 02:03:52 +00:00
Bill Wendling
08c85d1209 Update comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59766 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-21 00:45:00 +00:00
Dan Gohman
c8c2827993 Implement ComputeLatency for MachineInstr ScheduleDAGs. Factor
some of the latency computation logic out of the SDNode
ScheduleDAG code into a TargetInstrItineraries helper method
to help with this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59761 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-21 00:12:10 +00:00
Bill Wendling
ea7b527aa5 Add UADDO and SADDO nodes. These will be used for determining an overflow
condition in an addition operation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59760 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-21 00:11:16 +00:00
Evan Cheng
d37c13cfd1 - Register scavenger should use MachineRegisterInfo and internal map to find the first use of a register after a given machine instruction.
- When scavenging a register, in addition to the spill, insert a restore before the first use.
- Abort if client is looking to scavenge a register even when a previously scavenged register is still live.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59697 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-20 02:32:35 +00:00
Dan Gohman
a1e6d363e5 Factor out the code for verifying the work of the scheduler,
extend it a bit, and make use of it in all schedulers, to
ensure consistent checking.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59689 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-20 01:26:25 +00:00
Dan Gohman
343f0c0467 Experimental post-pass scheduling support. Post-pass scheduling
is currently off by default, and can be enabled with
-disable-post-RA-scheduler=false.

This doesn't have a significant impact on most code yet because it doesn't
yet do anything to address anti-dependencies and it doesn't attempt to
disambiguate memory references. Also, several popular targets
don't have pipeline descriptions yet.

The majority of the changes here are splitting the SelectionDAG-specific
code out of ScheduleDAG, so that ScheduleDAG can be moved to
libLLVMCodeGen.a. The interface between ScheduleDAG-using code and
the rest of the scheduling code is somewhat rough and will evolve.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59676 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19 23:18:57 +00:00
Dan Gohman
7d1cd3f21d Move the code for printing a graph node label for an SUnit into
a virtual method of SelectionDAG.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59667 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19 22:09:45 +00:00
Dan Gohman
252ae9e8ae Convert SUnit's dump method into a print method and implement
dump in terms of it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59665 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19 21:32:03 +00:00
Evan Cheng
01f63cdb04 Fix indentation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59558 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18 22:27:13 +00:00
Dan Gohman
b3b930a011 Make some methods const.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59540 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18 19:04:29 +00:00
Dan Gohman
3dbc4e3502 Whitespace cleanups.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59532 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18 17:05:42 +00:00
Nicolas Geoffray
67c8c4caba Implement support for JIT exceptions on X86_64. Relative offsets are
encoded on 32 bytes, and the personality function is not encoded as
relative.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59516 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18 10:44:46 +00:00
Dan Gohman
3cc6243ddf Change SUnit's dump method to take a ScheduleDAG* instead of
a SelectionDAG*.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59488 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18 02:06:40 +00:00
Dan Gohman
e45b6f10e2 There is no InstrStage class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59480 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18 01:05:04 +00:00
Dan Gohman
7e6a1bc0fa Add support for building a ScheduleDAG from MachineInstrs. This is currently
fairly conservative; it doesn't do alias-analysis queries and it doesn't
attempt to break anti-dependencies.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59324 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-14 21:47:58 +00:00
Dan Gohman
59d5f1d13b Add a version of NewSUnit for creating units with MachineInstrs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59282 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-14 00:41:36 +00:00
Dan Gohman
f449bf36ef Initial support for carrying MachineInstrs in SUnits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59278 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-14 00:06:09 +00:00
Dan Gohman
ae78a88e12 Clarify the comment about NumPreds and NumSuccs to reflect that they only
count non-control preds and succs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59276 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13 23:41:41 +00:00
Dan Gohman
d23e0f81bc Remove the FlaggedNodes member from SUnit. Instead of requiring each SUnit
to carry a SmallVector of flagged nodes, just calculate the flagged nodes
dynamically when they are needed.

The local-liveness change is due to a trivial scheduling change where
the scheduler arbitrary decision differently.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59273 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13 23:24:17 +00:00
Dan Gohman
550f5afb68 Make the Node member of SUnit private, and add accessors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59264 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13 21:36:12 +00:00
Dan Gohman
a23b3b803e Change ScheduleDAG's DAG member from a reference to a pointer, to prepare
for the possibility of scheduling without a SelectionDAG being present.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59263 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13 21:21:28 +00:00
Bill Wendling
e9e6bdf27f Implement stack protectors as function attributes: "ssp" and "sspreq".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59202 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13 01:02:14 +00:00
Dan Gohman
7fc610f073 Revert the part of r59145 that changed the comment about
virtual registers possibly having multiple kills while still
being defined and killed in the same block. If LiveIntervals
is manually re-run after two-address lowering, it currently
does add extra kills to two-address instructions, but this
is considered a bug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59194 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12 23:24:15 +00:00
Dan Gohman
bc5cbb8be9 Move the code that inserts X87 FP_REG_KILL instructions from a
special-purpose hook to a new pass. Also, add check to see if any
x87 virtual registers are used, to avoid doing any work in the
common case that no x87 code is needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59190 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12 22:55:05 +00:00
Dan Gohman
e8f4ac2b10 Update VarInfo's comments to reflect the current code. LiveVar
no longer records a unique defining instruction, and virtual
registers may have multiple kills while still being defined
and killed in the same block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59145 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12 17:02:24 +00:00
Dan Gohman
4974b6aae1 Correct a function name in a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59143 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12 16:53:40 +00:00
Dan Gohman
9b75b37375 Change the scheduler accessor methods to accept an explicit TargetMachine
argument instead of taking the SelectionDAG's TargetMachine. This is
needed for some upcoming scheduler changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59055 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11 17:50:47 +00:00
Mon P Wang
00ec49b6ba Cleaned up and fix bugs in convert_rndsat node
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59025 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11 05:40:06 +00:00
Mon P Wang
77cdf30742 Added CONVERT_RNDSAT (conversion with rounding and saturation) SDNode to
support targets that support these conversions. Users should avoid using
this node as the current targets don't generating code for it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59001 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-10 20:54:11 +00:00
Duncan Sands
6959b2bb65 Small cleanups. No functionality change intended!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58992 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-10 17:29:56 +00:00
Chris Lattner
09e99e41aa move some cases around to silence these sorts of warnings in
release-asserts build:

llvm/CodeGen/SelectionDAGNodes.h:1298: warning: control may reach end of non-void function 'unsigned int llvm::MVT::getSizeInBits() const' being inlined

what an unhelpful warning.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58957 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-10 03:05:41 +00:00
Evan Cheng
9ed2f80910 Rename isGVNonLazyPtr to isIndirectSym to reflect how it will be used.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58949 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-10 01:08:07 +00:00
Anton Korobeynikov
0b45c9957f Temporary revert my last commit: it seems it's triggering some subtle bug in backend
and breaks llvm-gcc

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58926 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-08 23:05:05 +00:00
Anton Korobeynikov
0f56953567 Factor out offset printing code into generic AsmPrinter.
FIXME: it seems, that most of targets don't support
offsets wrt CPI/GlobalAddress', was it intentional?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58917 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-08 17:21:38 +00:00
Evan Cheng
ce4a70bd76 Rename startFunctionStub to startGVStub since it's also used for GV non-lazy ptr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58897 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-08 08:02:53 +00:00
Evan Cheng
d7398c9b69 Rename isString -> isExternalSymbol; getString -> getExternalSymbol since these work on externsym machine relocations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58895 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-08 07:37:34 +00:00
Evan Cheng
fd827c41ce Indentation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58881 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-08 01:30:20 +00:00
Duncan Sands
47b3417cf0 Sign-extend rather than zero-extend when promoting
the condition for a BRCOND, according to what is
returned by getSetCCResultContents.  Since all
targets return the same thing (ZeroOrOneSetCCResult),
this should be harmless!  The point is that all over
the place the result of SETCC is fed directly into
BRCOND.  On machines for which getSetCCResultContents
returns ZeroOrNegativeOneSetCCResult, this is a
sign-extended boolean.  So it seems dangerous to
also feed BRCOND zero-extended booleans in some
circumstances - for example, when promoting the
condition.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58861 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-07 20:13:04 +00:00
Evan Cheng
a27b3532e2 Jump table relocation addresses may be resolved by target.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58834 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-07 09:01:15 +00:00
Bill Wendling
4c3a1d8d2b - Rename stackprotector_{prologue,epilogue} to stackprotector_{create,check}.
- Get rid of "HasStackProtector" in MachineFrameInfo.
- Modify intrinsics to tell which are doing what with memory.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58799 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-06 07:23:03 +00:00
Bill Wendling
b2a4298ce4 Implement the stack protector stack accesses via intrinsics:
- stackprotector_prologue creates a stack object and stores the guard there.

- stackprotector_epilogue reads the stack guard from the stack position created
  by stackprotector_prologue.

- The PrologEpilogInserter was changed to make sure that the stack guard is
  first on the stack frame.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58791 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-06 02:29:10 +00:00
Dan Gohman
33a9cb4f40 Make ISel ignore dead nodes. The DAGCombiner normally eliminates
dead nodes, but in this case its missing one. Fixing the DAGCombiner
is desirable, but it's somewhat involved.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58777 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-05 22:56:47 +00:00
Dan Gohman
fbcb52afdf The HadDelete field is no longer used.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58761 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-05 17:35:14 +00:00
Dan Gohman
695ea6e57e Update some comments to reflect the new code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58759 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-05 17:13:57 +00:00
Dan Gohman
8be6bbe5bf Eliminate the ISel priority queue, which used the topological order for a
priority function. Instead, just iterate over the AllNodes list, which is
already in topological order. This eliminates a fair amount of bookkeeping,
and speeds up the isel phase by about 15% on many testcases.

The impact on most targets is that AddToISelQueue calls can be simply removed.

In the x86 target, there are two additional notable changes.

The rule-bending AND+SHIFT optimization in MatchAddress that creates new
pre-isel nodes during isel is now a little more verbose, but more robust.
Instead of either creating an invalid DAG or creating an invalid topological
sort, as it has historically done, it can now just insert the new nodes into
the node list at a position where they will be consistent with the topological
ordering.

Also, the address-matching code has logic that checked to see if a node was
"already selected". However, when a node is selected, it has all its uses
taken away via ReplaceAllUsesWith or equivalent, so it won't recieve any
further visits from MatchAddress. This code is now removed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58748 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-05 04:14:16 +00:00
Evan Cheng
c96a8e7df1 Rename isGVLazyPtr to isGVNonLazyPtr relocation. This represents Mac OS X
indirect gv reference. Please don't call it lazy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58746 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-05 01:50:32 +00:00
Bill Wendling
80a320d974 Update in response to feedback from Chris:
- Use enums instead of magic numbers.

- Rework algorithm to use the bytes size from the target to determine when to
  emit stack protectors.

- Get rid of "propolice" in any comments.

- Renamed an option to its expanded form.

- Other miscellanenous changes.

More changes will come after this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58723 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-04 21:53:09 +00:00
Bill Wendling
2b58ce5ab4 Initial checkin for stack protectors. Here's what it does:
* The prologue is modified to read the __stack_chk_guard global and insert it
  onto the stack.

* The epilogue is modified to read the stored guard from the stack and compare
  it to the original __stack_chk_guard value. If they differ, then the
  __stack_chk_fail() function is called.

* The stack protector needs to be first on the stack (after the parameters) to
  catch any stack-smashing activities.

Front-end support will follow after a round of beta testing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58673 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-04 02:10:20 +00:00
Dan Gohman
3a5797d946 Change how extended types are represented in MVTs. Instead of fiddling
bits, use a union of a SimpleValueType enum and a regular Type*.

This increases the size of MVT on 64-bit hosts from 32 bits to 64 bits.
In most cases, this doesn't add significant overhead. There are places
in codegen that use arrays of MVTs, so these are now larger, but
they're small in common cases.

This eliminates restrictions on the size of integer types and vector
types that can be represented in codegen. As the included testcase
demonstrates, it's now possible to codegen very large add operations.
There are still some complications with using very large types. PR2880
is still open so they can't be used as return values on normal targets,
there are no libcalls defined for very large integers so operations
like multiply and divide aren't supported.

This also introduces a minimal tablgen Type library, capable of
handling IntegerType and VectorType. This will allow parts of
TableGen that don't depend on using SimpleValueType values to handle
arbitrary integer and vector types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58623 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-03 17:56:27 +00:00
Dan Gohman
958fdf07b5 Remove redundant inline keywords from functions defined within
class definitions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58620 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-03 17:10:24 +00:00
Dan Gohman
00b58dfc88 Totally disable the setSubgraphColor calls temporarily, as they're
currently troublesome even for #ifndef NDEBUG builds.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58512 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-31 16:12:56 +00:00
Evan Cheng
70ba70f065 Add a bit to MachineRelocation that tells JIT that target is responsible for resolving the address. e.g. ARM constpool.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58405 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-29 23:53:42 +00:00
Duncan Sands
d22ec5f628 Add sanity checking for BUILD_PAIR (I noticed the
other day that PPC custom lowering could create
a BUILD_PAIR of two f64 with a result type of...
f64! - already fixed).  Fix a place that triggers
the sanity check.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58378 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-29 14:22:20 +00:00
Evan Cheng
5489893867 - More pre-split fixes: spill slot live interval computation bug; restore point bug.
- If a def is spilt, remember its spill index to allow its reuse.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58375 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-29 08:39:34 +00:00
Evan Cheng
d0e32c5d5c - Rewrite code that update register live interval that's split.
- Create and update spill slot live intervals.
- Lots of bug fixes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58367 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-29 05:06:14 +00:00
Dan Gohman
f4717aa1b2 Add some more information to the top-level comment for this file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58339 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-28 18:47:37 +00:00
Evan Cheng
83f5c856d9 Avoid calls to setSubgraphColor in release mode. They generate lots of error messages and slow down compilation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58336 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-28 17:23:13 +00:00
Chris Lattner
b3696d865e more comment cleanups.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58316 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-28 05:32:08 +00:00
Chris Lattner
b2ccf8f607 comment cleanups.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58315 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-28 05:31:31 +00:00
David Greene
8ad4c00c00 Have TableGen emit setSubgraphColor calls under control of a -gen-debug
flag.  Then in a debugger developers can set breakpoints at these calls
to see waht is about to be selected and what the resulting subgraph
looks like.  This really helps when debugging instruction selection.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58278 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-27 21:56:29 +00:00
David Greene
c5e7e8d87d Add setSubgraphColor to color an entire portion of a SelectionDAG. This
will be used to support debug features in TableGen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58257 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-27 18:17:03 +00:00
Evan Cheng
06587497dc Avoid splitting an interval multiple times; avoid splitting re-materializable val# (for now).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58068 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-24 02:05:00 +00:00
Dan Gohman
c9f3cc3bda Fix constant-offset emission for x86-64 absolute addresses. This
fixes a bunch of test-suite JIT failures on x86-64 in
-relocation-model=static mode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58066 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-24 01:57:54 +00:00
Evan Cheng
f5cd4f0d70 Committing a good chunk of the pre-register allocation live interval splitting pass. It's handling simple cases and appear to do good things. Next: avoid splitting an interval multiple times; renumber registers when possible; record stack slot live intervals for coloring; rematerialize defs when possible.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58044 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-23 20:43:13 +00:00
Duncan Sands
3b521d5acc Add some comments explaining the meaning of a boolean
that is not of type MVT::i1 in SELECT and SETCC nodes.
Relax the LegalizeTypes SELECT condition promotion
sanity checks to allow other condition types than i1.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57966 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-22 09:06:24 +00:00
Bill Wendling
b2ab0e7471 Fix comment to name "TokenFactor" instead of "Token factor".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57939 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-21 23:57:52 +00:00
Nuno Lopes
cef7527a85 fix a tricky bug in the JIT global variable emitter, that was triggered when JITing a variable independently of a function. This lead to sharing memory memory between functions and GVs thus changing the value of a GV could change the code in execution. more details on the ML.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57900 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-21 11:42:16 +00:00
Evan Cheng
09e8ca8a58 Add skeleton for the pre-register allocation live interval splitting pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57847 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-20 21:44:59 +00:00
Evan Cheng
11a26f3697 Add a register class -> virtual registers map.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57844 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-20 20:03:28 +00:00
Dan Gohman
6520e20e4f Teach DAGCombine to fold constant offsets into GlobalAddress nodes,
and add a TargetLowering hook for it to use to determine when this
is legal (i.e. not in PIC mode, etc.)

This allows instruction selection to emit folded constant offsets
in more cases, such as the included testcase, eliminating the need
for explicit arithmetic instructions.

This eliminates the need for the C++ code in X86ISelDAGToDAG.cpp
that attempted to achieve the same effect, but wasn't as effective.

Also, fix handling of offsets in GlobalAddressSDNodes in several
places, including changing GlobalAddressSDNode's offset from
int to int64_t.

The Mips, Alpha, Sparc, and CellSPU targets appear to be
unaware of GlobalAddress offsets currently, so set the hook to
false on those targets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57748 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-18 02:06:02 +00:00
Mon P Wang
c4d1021ead Added MemIntrinsicNode which is useful to represent target intrinsics that
touches memory and need an associated MemOperand


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57712 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 18:22:58 +00:00
Dan Gohman
f522068412 Trim #includes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57649 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 20:18:31 +00:00
Dan Gohman
8e8b8a223c Const-ify several TargetInstrInfo methods.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57622 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 01:49:15 +00:00
Dan Gohman
7ddcadc7ee Move the include of MachineLocation.h into MachineModuleInfo.h
because it declares a std::vector<MachineMove>, and strict
concept checking requires the definition of MachineMove to be
available.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57617 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16 00:20:14 +00:00
Dan Gohman
dd5b58ad7b FastISel support for exception-handling constructs.
- Move the EH landing-pad code and adjust it so that it works
   with FastISel as well as with SDISel.
 - Add FastISel support for @llvm.eh.exception and
   @llvm.eh.selector.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57539 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-14 23:54:11 +00:00
Evan Cheng
0329466b6b Rename LoadX to LoadExt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57526 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-14 21:26:46 +00:00
Dale Johannesen
23a98551ab Add a "loses information" return value to APFloat::convert
and APFloat::convertToInteger.  Restore return value to
IEEE754.  Adjust all users accordingly.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57329 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-09 23:00:39 +00:00
Dan Gohman
241f464d24 Fix fast-isel's handling of atomic instructions. They may
expand to multiple basic blocks, in which case fast-isel
needs to informed of which block to use as it resumes
inserting instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57040 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-04 00:56:36 +00:00
Dan Gohman
d735b8019b Switch the MachineOperand accessors back to the short names like
isReg, etc., from isRegister, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57006 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-03 15:45:36 +00:00
Dan Gohman
d98d6203e4 Optimize conditional branches in X86FastISel. This replaces
sequences like this:
       sete    %al
       testb   %al, %al
       jne     LBB11_1
with this:
       je      LBB11_1


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56969 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-02 22:15:21 +00:00
Dan Gohman
6ade6f55a8 Add a new MachineBasicBlock utility function, isLayoutSuccessor, that
can be used when deciding if a block can transfer control to another
via a fall-through instead of a branch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56968 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-02 22:09:09 +00:00
Evan Cheng
b1290a6cc4 A Partitioned Boolean Quadratic Programming (PBQP) based register allocator.
Contributed by Lang Hames.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56959 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-02 18:29:27 +00:00
Dan Gohman
f06c835f76 Optimize SelectionDAG's AssignTopologicalOrder even further.
Completely eliminate the TopOrder std::vector. Instead, sort
the AllNodes list in place. This also eliminates the need to
call AllNodes.size(), a linear-time operation, before
performing the sort.

Also, eliminate the Sources temporary std::vector, since it
essentially duplicates the sorted result as it is being
built.

This also changes the direction of the topological sort
from bottom-up to top-down. The AllNodes list starts out in
roughly top-down order, so this reduces the amount of
reordering needed. Top-down is also more convenient for
Legalize, and ISel needed only minor adjustments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56867 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-30 18:30:35 +00:00
Evan Cheng
dc37786595 Re-apply 56835 along with header file changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56848 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-30 15:44:16 +00:00
Dan Gohman
a43abd102f Fix FastISel to not initialize the PIC-base register multiple times
in functions with PIC references from more than one basic block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56807 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-29 21:55:50 +00:00
Evan Cheng
184793fc8a Re-apply 56683 with fixes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56748 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-27 01:56:22 +00:00
Bill Wendling
d5d8191b20 Temporarily reverting r56683. This is causing a failure during the build of llvm-gcc:
/Volumes/Gir/devel/llvm/clean/llvm-gcc.obj/./gcc/xgcc -B/Volumes/Gir/devel/llvm/clean/llvm-gcc.obj/./gcc/ -B/Volumes/Gir/devel/llvm/clean/llvm-gcc.install/i386-apple-darwin9.5.0/bin/ -B/Volumes/Gir/devel/llvm/clean/llvm-gcc.install/i386-apple-darwin9.5.0/lib/ -isystem /Volumes/Gir/devel/llvm/clean/llvm-gcc.install/i386-apple-darwin9.5.0/include -isystem /Volumes/Gir/devel/llvm/clean/llvm-gcc.install/i386-apple-darwin9.5.0/sys-include -mmacosx-version-min=10.4 -O2  -O2 -g -O2  -DIN_GCC    -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition  -isystem ./include  -fPIC -pipe -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED  -I. -I. -I../../llvm-gcc.src/gcc -I../../llvm-gcc.src/gcc/. -I../../llvm-gcc.src/gcc/../include -I./../intl -I../../llvm-gcc.src/gcc/../libcpp/include  -I../../llvm-gcc.src/gcc/../libdecnumber -I../libdecnumber -I/Volumes/Gir/devel/llvm/clean/llvm.obj/include -I/Volumes/Gir/devel/llvm/clean/llvm.src/include -fexceptions -fvisibility=hidden -DHIDE_EXPORTS -c ../../llvm-gcc.src/gcc/unwind-dw2-fde-darwin.c -o libgcc/./unwind-dw2-fde-darwin.o
Assertion failed: (TargetRegisterInfo::isVirtualRegister(regA) && TargetRegisterInfo::isVirtualRegister(regB) && "cannot update physical register live information"), function runOnMachineFunction, file /Volumes/Gir/devel/llvm/clean/llvm.src/lib/CodeGen/TwoAddressInstructionPass.cpp, line 311.
../../llvm-gcc.src/gcc/unwind-dw2.c:1527: internal compiler error: Abort trap
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.
{standard input}:3521:non-relocatable subtraction expression, "_dwarf_reg_size_table" minus "L20$pb"
{standard input}:3521:symbol: "_dwarf_reg_size_table" can't be undefined in a subtraction expression
{standard input}:3520:non-relocatable subtraction expression, "_dwarf_reg_size_table" minus "L20$pb"
...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56703 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-26 22:10:44 +00:00
Dan Gohman
7810bfed55 Rename ConstantSDNode's getSignExtended to getSExtValue, for
consistancy with ConstantInt, and re-implement it in terms
of ConstantInt's getSExtValue.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56700 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-26 21:54:37 +00:00
Evan Cheng
36a55023c1 Fix @llvm.frameaddress codegen. FP elimination optimization should be disabled when frame address is desired. Also add support for depth > 0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56683 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-26 19:48:35 +00:00
Dale Johannesen
86098bd6a6 Add "inreg" field to CallSDNode (doesn't increase
its size).  Adjust various lowering functions to
pass this info through from CallInst.  Use it to
implement sseregparm returns on X86.  Remove
X86_ssecall calling convention.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56677 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-26 19:31:26 +00:00
Bill Wendling
d751c64a67 If we have a function with an unreachable statement such that the ending debug
information is in an unreachable block, then it's possible that the high/low pc
values won't be set for the dwarf information. E.g., this function:

void abort(void) __attribute__((__noreturn__));
void dead_beef(void) __attribute__ ((noreturn));

int *b;

void dead_beef(void) {
  *b=0xdeadbeef;
  abort();
}

has a call to "@llvm.dbg.region.end" only in the unreachable block:

define void @dead_beef() noreturn nounwind  {
entry:
	call void @llvm.dbg.func.start(...)
	call void @llvm.dbg.stoppoint(...)
...
	call void @abort( ) noreturn nounwind 
	unreachable

return:		; No predecessors!
	call void @llvm.dbg.stoppoint(...)
	call void @llvm.dbg.region.end(...)
	ret void
}

The dwarf information emitted is something like:

0x00000084:     TAG_subprogram [5]  
                 AT_name( "dead_beef" )
                 AT_external( 0x01 )
                 AT_prototyped( 0x01 )
                 AT_decl_file( 0x01 )
                 AT_decl_line( 0x08 )

Note that this is *not* the best fix for this problem, but a band-aid for an
gaping wound. This code needs to be changed when we revamp our debugging
information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56628 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-26 00:28:12 +00:00
Dale Johannesen
c9c6da61ac Accept 'inreg' attribute on x86 functions as
meaning sse_regparm (i.e. float/double values go
in XMM0 instead of ST0).  Update documentation
to reflect reality.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56619 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-25 20:47:45 +00:00
Dan Gohman
33134c4a75 FastISel support for debug info.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56610 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-25 17:05:24 +00:00
Anton Korobeynikov
088ae8393f Use generic section-handling stuff to emit constant pool entries
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56579 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-24 22:17:59 +00:00
Anton Korobeynikov
d7ca416d6c Get rid of duplicate char*/Section* TextSection
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56574 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-24 22:15:21 +00:00
Anton Korobeynikov
0c8e80607b Drop obsolete hook and change all usage to new interface
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56572 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-24 22:13:07 +00:00
Anton Korobeynikov
b5a32e2e8c Provide direct function to switch to Section
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56571 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-24 22:12:10 +00:00
Bill Wendling
f3cbca279d Reapplying r56550
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56553 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-24 10:25:02 +00:00
Eric Christopher
83e05c48de Temporarily revert r56550 until missing commit can be added.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56551 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-24 08:30:44 +00:00
Bill Wendling
df0c7bc52d Refactor the constant folding code into it's own function. And call it from both
the SelectionDAG and DAGCombiner code. The only functionality change is that now
the DAG combiner is performing the constant folding for these operations instead
of being a no-op.

This is *not* in response to a bug, so there isn't a testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56550 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-24 07:11:26 +00:00
Dale Johannesen
86b49f8e2d Next round of earlyclobber handling. Approach the
RA problem by expanding the live interval of an
earlyclobber def back one slot.  Remove
overlap-earlyclobber throughout.  Remove 
earlyclobber bits and their handling from
live internals.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56539 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-24 01:07:17 +00:00
Dan Gohman
3e4fb70c6a Add a method to MachineInstr for testing whether it makes
any volatile memory references.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56528 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-24 00:06:15 +00:00
Dan Gohman
d57dd5f4e6 Arrange for FastISel code to have access to the MachineModuleInfo
object. This will be needed to support debug info.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56508 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-23 21:53:34 +00:00
Chris Lattner
14743e83b9 explain what earlyclobber actually is.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56415 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-21 23:30:17 +00:00
Dan Gohman
3bdf5fe71a Factor out code into HandleVirtRegDef, for consistency with
Handle{Virt,Phys}Reg{Def,Use}. Remove a redundant check
for register zero, and redundant checks for isPhysicalRegister.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56412 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-21 21:11:41 +00:00
Cedric Venet
8e4018e2de Update VS projects.
Change some class to struct for coherency.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56389 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-20 18:02:18 +00:00
Dale Johannesen
79faf61fad Shorten and rearrange data fields to save a word of memory.
Per review feedback.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56388 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-20 17:45:21 +00:00
Dan Gohman
015b714f29 Now that ConstantSDNode doesn't hold an APInt,
use ARG_FLAGSSDNode as the most aligned node type,
as it contains an int64_t, which is 8-byte
aligned on mingw.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56358 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-19 18:09:19 +00:00
Dale Johannesen
fa48f94130 Remove AsmThatEarlyClobber etc. from LiveIntervalAnalysis
and redo as linked list walk.  Logic moved into RA.
Per review feedback.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56326 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-19 01:02:35 +00:00
Dan Gohman
ee2e403545 Add a new "fast" scheduler. This is currently basically just a
copy of the BURRList scheduler, but with several parts ripped
out, such as backtracking, online topological sort maintenance
(needed by backtracking), the priority queue, and Sethi-Ullman
number computation and maintenance (needed by the priority
queue). As a result of all this, it generates somewhat lower
quality code, but that's its tradeoff for running about 30%
faster than list-burr in -fast mode in many cases.

This is somewhat experimental. Moving forward, major pieces of
this can be refactored with pieces in common with
ScheduleDAGRRList.cpp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56307 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-18 16:26:26 +00:00
Dale Johannesen
91aac1015e Add a bit to mark operands of asm's that conflict
with an earlyclobber operand elsewhere.  Propagate
this bit and the earlyclobber bit through SDISel.
Change linear-scan RA not to allocate regs in a way 
that conflicts with an earlyclobber.  See also comments.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56290 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17 21:13:11 +00:00
Dan Gohman
d3ead4329e Add a new MachineInstr-level DCE pass. It is very simple, and is intended to
be used with fast-isel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56268 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17 00:43:24 +00:00
Bill Wendling
056292fd73 Reverting r56249. On further investigation, this functionality isn't needed.
Apologies for the thrashing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56251 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16 21:48:12 +00:00
Bill Wendling
9468a9b6be - Change "ExternalSymbolSDNode" to "SymbolSDNode".
- Add linkage to SymbolSDNode (default to external).
- Change ISD::ExternalSymbol to ISD::Symbol.
- Change ISD::TargetExternalSymbol to ISD::TargetSymbol

These changes pave the way to allowing SymbolSDNodes with non-external linkage.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56249 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16 21:12:30 +00:00
Dan Gohman
05ae98346a Fix these comments to reflect current reality. Surprisingly,
MachineConstantPool::getConstantPoolIndex actually expects
a log2-encoded alignment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56248 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16 20:45:53 +00:00
Dan Gohman
5eb0cecbc5 Re-enable SelectionDAG CSE for calls. It matters in the case of
libcalls, as in this testcase on ARM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56226 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-15 19:46:03 +00:00
Dale Johannesen
e009180f2b adjust last patch per review feedback
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56194 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-14 01:44:36 +00:00
Dan Gohman
014278e6a1 Remove isImm(), isReg(), and friends, in favor of
isImmediate(), isRegister(), and friends, to avoid confusion
about having two different names with the same meaning. I'm
not attached to the longer names, and would be ok with
changing to the shorter names if others prefer it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56189 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-13 17:58:21 +00:00
Dan Gohman
095cc29f32 Define CallSDNode, an SDNode subclass for use with ISD::CALL.
Currently it just holds the calling convention and flags
for isVarArgs and isTailCall.

And it has several utility methods, which eliminate magic
5+2*i and similar index computations in several places.

CallSDNodes are not CSE'd. Teach UpdateNodeOperands to handle
nodes that are not CSE'd gracefully.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56183 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-13 01:54:27 +00:00
Dan Gohman
4fbd796a12 Change ConstantSDNode and ConstantFPSDNode to use ConstantInt* and
ConstantFP* instead of APInt and APFloat directly.

This reduces the amount of time to create ConstantSDNode
and ConstantFPSDNode nodes when ConstantInt* and ConstantFP*
respectively are already available, as is the case in
SelectionDAGBuild.cpp. Also, it reduces the amount of time
to legalize constants into constant pools, and the amount of
time to add ConstantFP operands to MachineInstrs, due to
eliminating ConstantInt::get and ConstantFP::get calls.

It increases the amount of work needed to create new constants
in cases where the client doesn't already have a ConstantInt*
or ConstantFP*, such as legalize expanding 64-bit integer constants
to 32-bit constants. And it adds a layer of indirection for the
accessor methods. But these appear to be outweight by the benefits
in most cases.

It will also make it easier to make ConstantSDNode and
ConstantFPNode more consistent with ConstantInt and ConstantFP.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56162 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-12 18:08:03 +00:00
Dale Johannesen
913d3dfac4 Pass "earlyclobber" bit through to machine
representation; coalescer and RA need to know
about it.  No functional change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56161 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-12 17:49:03 +00:00
Dan Gohman
f5aeb1a8e4 Rename ConstantSDNode::getValue to getZExtValue, for consistency
with ConstantInt. This led to fixing a bug in TargetLowering.cpp
using getValue instead of getAPIntValue.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56159 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-12 16:56:44 +00:00
Dale Johannesen
d18a462bdd The version of AtomicSDNode::AtomicSDNode used (only) for
cmp-and-swap reversed the Cmp and Swap arguments; comments
make it clear this is unintentional.  Unfortunately, the
x86 BE had a compensating reversal, which is removed here.
PPC is OK.

From inspection of the Alpha code I think it is OK, but
if somebody has that platform please check it out.  I
cannot test on that platform.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56091 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-11 03:12:59 +00:00
Dan Gohman
0586d91bb3 Add X86FastISel support for static allocas, and refences
to static allocas. As part of this change, refactor the
address mode code for laods and stores.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56066 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-10 20:11:02 +00:00
Gabor Greif
acd12fc3a4 fit in 80 cols, minor tweaks
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55992 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-09 17:52:13 +00:00
Evan Cheng
59fbc80f6b Fix a constant lowering bug. Now we can do load and store instructions with funky getelementptr embedded in the address operand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55975 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-09 01:26:59 +00:00
Evan Cheng
c7fcfa07d9 - Doh. Pass vector by value is bad.
- Add a AnalyzeCallResult specialized for calls which produce a single value. This is used by fastisel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55879 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-07 09:02:18 +00:00
Owen Anderson
9c7216f984 Rename method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55853 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-05 20:49:33 +00:00
Dan Gohman
40b189e4e2 FastISel support for ConstantExprs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55843 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-05 18:18:20 +00:00
Evan Cheng
c89d2feb35 Add a variant of AnalyzeCallOperands that can be used by fast isel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55838 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-05 16:59:26 +00:00
Owen Anderson
95267a1e67 Add initial support for selecting constant materializations that require constant
pool loads on X86 in fast isel.  This isn't actually used yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55814 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-05 00:06:23 +00:00
Dan Gohman
ae73dc1448 Tidy up several unbeseeming casts from pointer to intptr_t.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55779 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04 17:05:41 +00:00
Dale Johannesen
7794f2a3a7 Add intrinsics for log, log2, log10, exp, exp2.
No functional change (and no FE change to generate them).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55753 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04 00:47:13 +00:00
Dan Gohman
104e4ce162 Do trivial local CSE for constants and other non-Instruction values
in FastISel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55748 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03 23:32:19 +00:00
Dan Gohman
3df24e667f Create HandlePHINodesInSuccessorBlocksFast, a version of
HandlePHINodesInSuccessorBlocks that works FastISel-style. This
allows PHI nodes to be updated correctly while using FastISel.

This also involves some code reorganization; ValueMap and
MBBMap are now members of the FastISel class, so they needn't
be passed around explicitly anymore. Also, SelectInstructions
is changed to SelectInstruction, and only does one instruction
at a time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55746 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03 23:12:08 +00:00
Dale Johannesen
61e6093dc8 Do not emit a UsedDirective for things in the llvm.used
list that have internal linkage; the linker doesn't need
or want this.  (These objects must still be preserved
at compile time, so just removing them from the llvm.used
list doesn't work.)  Should affect only Darwin.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55722 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03 20:34:58 +00:00
Evan Cheng
ea09f4f469 Make UpdateValueMap, createResultReg, etc. protected instead of private so they can used by target hooks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55691 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03 06:43:10 +00:00
Owen Anderson
cc54e76cc6 Fix an issue where a use might be selected before a def, and then we didn't respect the pre-chosen vreg
assignment when selecting the def.  This is the naive solution to the problem: insert a copy to the pre-chosen
vreg.  Other solutions might be preferable, such as:
  1) Passing the dest reg into FastEmit_.  However, this would require the higher level code to know about reg classes, which they don't currently.
  2) Selecting blocks in reverse postorder.  This has some compile time cost for computing the order, and we'd need to measure its impact.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55555 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-30 00:38:46 +00:00
Dan Gohman
99b218218c Add a target callback for FastISel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55512 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-28 23:21:34 +00:00
Gabor Greif
ba36cb5242 erect abstraction boundaries for accessing SDValue members, rename Val -> Node to reflect semantics
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55504 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-28 21:40:38 +00:00
Dan Gohman
5edd361497 Fix a FastISel bug where the instructions from lowering the arguments
were being emitted after the first instructions of the entry block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55496 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-28 20:28:56 +00:00
Owen Anderson
40a468f249 FastEmitInst_extractsubreg doesn't need to be passed the register class. It can get it from MachineRegisterInfo instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55476 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-28 17:47:37 +00:00
Dale Johannesen
e00a8a2a2e Split the ATOMIC NodeType's to include the size, e.g.
ATOMIC_LOAD_ADD_{8,16,32,64} instead of ATOMIC_LOAD_ADD.
Increased the Hardcoded Constant OpActionsCapacity to match.
Large but boring; no functional change.

This is to support partial-word atomics on ppc; i8 is
not a valid type there, so by the time we get to lowering, the
ATOMIC_LOAD nodes looks the same whether the type was i8 or i32.
The information can be added to the AtomicSDNode, but that is the
largest SDNode; I don't fully understand the SDNode allocation,
but it is sensitive to the largest node size, so increasing
that must be bad.  This is the alternative.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55457 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-28 02:44:49 +00:00
Dan Gohman
7c3234c6be Reorganize the lifetimes of the major objects SelectionDAGISel
works with.

SelectionDAG, FunctionLoweringInfo, and SelectionDAGLowering
objects now get created once per SelectionDAGISel instance, and
can be reused across blocks and across functions. Previously,
they were created and destroyed each time they were needed.

This reorganization simplifies the handling of PHI nodes, and
also SwitchCases, JumpTables, and BitTestBlocks. This
simplification has the side effect of fixing a bug in FastISel
where successor PHI nodes weren't being updated correctly.

This is also a step towards making the transition from FastISel
into and out of SelectionDAG faster, and also making
plain SelectionDAG faster on code with lots of little blocks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55450 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-27 23:52:12 +00:00
Owen Anderson
8970f00def Add a helper method that will be used to support EXTRACT_SUBREG for selecting trunc's in fast-isel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55439 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-27 22:30:02 +00:00
Evan Cheng
df3b99381f Refactor isSafeToReMat out of 2addr pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55430 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-27 20:33:50 +00:00
Dan Gohman
ad368ac2b5 Add a new FastISel method, getRegForValue, which takes care of
the details of materializing constants and other values into
registers, and make use of it in several places.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55426 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-27 18:10:19 +00:00
Dan Gohman
ebe1dbabc1 Unbreak PseudoSourceValue::print. This fixes -print-machine-instrs
and various other things.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55415 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-27 15:24:43 +00:00
Dan Gohman
10df0fa73e Basic FastISel support for floating-point constants.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55401 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-27 01:09:54 +00:00
Owen Anderson
d0533c9998 Factor out a large amoutn of the cast handling code in fast isel into helper methods.
This simultaneously makes the code simpler and adds support for sext as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55398 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-26 23:46:32 +00:00
Dan Gohman
4b6e7069c3 Add a MachineInstrBuilder method for adding floating-point
immediate operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55397 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-26 23:19:23 +00:00
Gabor Greif
99a6cb92d1 disallow direct access to SDValue::ResNo, provide a getter instead
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55394 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-26 22:36:50 +00:00
Dan Gohman
763d89343b Refactor the bitcast code into its own function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55387 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-26 21:28:54 +00:00
Gabor Greif
231fe70541 fix doxygen comment
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55372 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-26 17:44:40 +00:00
Owen Anderson
0f84e4e310 Add a RetVT parameter to emitted FastISel methods, so that we will be able to pass the desired return
type down.  This is not currently used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55345 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-25 23:58:18 +00:00
Owen Anderson
6d0c25ec3a Add support for fast isel of (integer) immediate materialization pattens, and use them to support
bitcast of constants in fast isel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55325 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-25 20:20:32 +00:00
Chris Lattner
edfb72c628 simplify PseudoSourceValue printing a bit. Unnest all of PseudoSourceValue.cpp from the llvm namespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55293 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-24 20:37:32 +00:00
Evan Cheng
40ab164d3a Print PseudoSourceValue.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55291 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-24 18:51:20 +00:00
Chris Lattner
62ca32540f get MachineConstantPool off std::ostream, onto raw_ostream. It would be
really nice if someone converted MachineFunction::print to raw_ostream.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55268 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-23 22:53:13 +00:00
Chris Lattner
944fac71e0 Switch the asmprinter (.ll) and all the stuff it requires over to
use raw_ostream instead of std::ostream.  Among other goodness,
this speeds up llvm-dis of kc++ with a release build from 0.85s
to 0.49s (88% faster).

Other interesting changes:
 1) This makes Value::print be non-virtual.
 2) AP[S]Int and ConstantRange can no longer print to ostream directly, 
    use raw_ostream instead.
 3) This fixes a bug in raw_os_ostream where it didn't flush itself 
    when destroyed.
 4) This adds a new SDNode::print method, instead of only allowing "dump".


A lot of APIs have both std::ostream and raw_ostream versions, it would
be useful to go through and systematically anihilate the std::ostream 
versions.

This passes dejagnu, but there may be minor fallout, plz let me know if
so and I'll fix it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55263 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-23 22:23:09 +00:00
Dan Gohman
6ecf50908c Make MBBMap a DenseMap instead of a std::map.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55220 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-23 02:44:46 +00:00
Dan Gohman
f350b277f3 Move the point at which FastISel taps into the SelectionDAGISel
process up to a higher level. This allows FastISel to leverage
more of SelectionDAGISel's infastructure, such as updating Machine
PHI nodes.

Also, implement transitioning from SDISel back to FastISel in
the middle of a block, so it's now possible to go back and
forth. This allows FastISel to hand individual CallInsts and other
complicated things off to SDISel to handle, while handling the rest
of the block itself.

To help support this, reorganize the SelectionDAG class so that it
is allocated once and reused throughout a function, instead of
being completely reallocated for each block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55219 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-23 02:25:05 +00:00
Dan Gohman
6f17966a80 Move SelectionDAG's constructor out of line.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55212 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-23 00:50:30 +00:00
Dan Gohman
3c8f36fd03 Reapply r55191 and r55192.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55205 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-22 21:28:19 +00:00
Bill Wendling
449416deb6 Reverting r55190, r55191, and r55192. They broke the build with this error message:
{standard input}:17:bad register name `%sil'
make[4]: *** [libgcc/./_addvsi3.o] Error 1
make[4]: *** Waiting for unfinished jobs....
{standard input}:23:bad register name `%dil'
{standard input}:28:bad register name `%dil'
make[4]: *** [libgcc/./_addvdi3.o] Error 1
{standard input}:18:bad register name `%sil'
make[4]: *** [libgcc/./_subvsi3.o] Error 1



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55200 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-22 20:51:05 +00:00
Dan Gohman
e0182ec0e4 Support non-fallthrough unconditional branches in FastISel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55191 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-22 19:21:41 +00:00
Owen Anderson
a794ef7f5d Fix typo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55189 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-22 18:26:07 +00:00
Chris Lattner
2dba6a1bdb consolidate DenseMapInfo implementations, and add one for std::pair.
Patch contributed by m-s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55167 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-22 05:08:25 +00:00
Dan Gohman
22bb31103d Factor out the predicate check code from DAGISelEmitter.cpp
and use it in FastISelEmitter.cpp, and make FastISel
subtarget aware. Among other things, this lets it work
properly on x86 targets that don't have SSE, where it
successfully selects x87 instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55156 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-22 00:20:26 +00:00
Dan Gohman
2bb1e3eede Add libcalls for the new rounding opcodes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55133 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-21 18:38:14 +00:00
Dan Gohman
8471ef5f4e Fix a typo that Dale noticed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55132 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-21 18:13:12 +00:00
Dan Gohman
509e84fa71 Add libm-oriented ISD opcodes for rounding operations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55130 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-21 17:55:02 +00:00
Dan Gohman
ad3460c3c9 Simplify SelectRoot's interface, and factor out some common code
from all targets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55124 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-21 16:36:34 +00:00
Dan Gohman
815ffa24c4 SelectionDAGISel::SelectRootInit does not need to be virtual.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55122 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-21 16:06:51 +00:00
Dan Gohman
ec20183c35 Make HandleSDNode::getValue return an SDValue instead of
the full SDUse, which isn't needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55121 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-21 16:02:46 +00:00
Dan Gohman
d5fe57d2f9 Basic fast-isel support for instructions with constant int operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55099 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-21 01:41:07 +00:00
Dan Gohman
7f92ebddd2 Improve the doxygen comment for SelectInstructions::SelectInstructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55094 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-21 00:19:43 +00:00
Dan Gohman
c7f72de3b4 Begin making more use of the FastISelEmitter class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55093 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-21 00:19:05 +00:00
Owen Anderson
cb37188323 Use raw_ostream throughout the AsmPrinter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55092 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-21 00:14:44 +00:00
Evan Cheng
83785c8096 First cut, un-optimized (and untested) fast isel lowering of GetElementPtrInst.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55085 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-20 22:45:34 +00:00
Dan Gohman
bb466331e7 Simplify FastISel's constructor argument list, make the FastISel
class hold a MachineRegisterInfo member, and make the
MachineBasicBlock be passed in to SelectInstructions rather
than the FastISel constructor.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55076 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-20 21:05:57 +00:00
Dan Gohman
a267651b7e Disable DAGCombine's alignment inference in "fast" codegen mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55059 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-20 16:30:28 +00:00
Dan Gohman
b8d2f550b8 Change the FoldingSetNodeID usage for objects which carry
alignment and volatility information, such as loads and
stores, to reduce the number of integer values added to
the FoldingSetNodeID.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55058 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-20 15:58:01 +00:00
Dan Gohman
cc8430f742 Fix a leak in the FastISel code that Chris pointed out.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55031 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-20 00:56:17 +00:00
Dan Gohman
bdedd44773 Add FastISel support for several more binary operators.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55020 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-20 00:11:48 +00:00
Dan Gohman
40610241d0 Fix the FastISel class' doxygen comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54957 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-18 23:41:46 +00:00
Owen Anderson
d6664311ac Resurrect some ancient code to add spill ranges without attempting folding, remat, or splitting. This code has been updated to current APIs
in so far as it compiles and, in theory, works, but does not take advantage of recent advancements.  For instance, it could be improved by using
MachineRegisterInfo::use_iterator.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54924 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-18 18:05:32 +00:00
Gordon Henriksen
5eca075b74 Rename some GC classes so that their roll will hopefully be clearer.
In particular, Collector was confusing to implementors. Several
thought that this compile-time class was the place to implement
their runtime GC heap. Of course, it doesn't even exist at runtime.
Specifically, the renames are:

  Collector               -> GCStrategy
  CollectorMetadata       -> GCFunctionInfo
  CollectorModuleMetadata -> GCModuleInfo
  CollectorRegistry       -> GCRegistry
  Function::getCollector  -> getGC (setGC, hasGC, clearGC)

Several accessors and nested types have also been renamed to be
consistent. These changes should be obvious.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54899 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-17 18:44:35 +00:00
Anton Korobeynikov
2b11004d56 Link GC metadata printers by default to llc
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54892 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-17 14:33:01 +00:00
Anton Korobeynikov
4a8978b61c Fix merge error
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54891 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-17 13:56:03 +00:00
Gordon Henriksen
5a29c9eed1 Factor GC metadata table assembly generation out of Collector in preparation for splitting AsmPrinter into its own library.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54881 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-17 12:56:54 +00:00
Gordon Henriksen
c317a60c27 Factor GC metadata table assembly generation out of Collector in preparation for splitting AsmPrinter into its own library.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54880 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-17 12:08:44 +00:00
Anton Korobeynikov
ffe31d7bf1 Move SLEB/ULEB size calculation routines from AsmPrinter to TargetAsmInfo. This makes JIT asmprinter-free.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54843 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-16 12:57:46 +00:00
Owen Anderson
79e6ed9d47 Move MachineInstr::getOpcode inline.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54807 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-14 23:25:30 +00:00
Dan Gohman
e285a74f7c Make FastISel's constructor protected, and give it a destructor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54793 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-14 21:51:29 +00:00
Dan Gohman
a8c763b307 Use empty() instead of begin() == end().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54780 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-14 18:13:49 +00:00
Owen Anderson
289983123b Expunge the last uses of std::map from LiveIntervals.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54766 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-13 22:28:50 +00:00
Owen Anderson
20e2839cb9 Move r2iMap_ over to DenseMap from std::map.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54765 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-13 22:08:30 +00:00
Owen Anderson
03857b29d8 Make the allocation of LiveIntervals explicit, rather than holding them in the r2iMap_ by value. This will prevent references to them from being invalidated
if the map is changed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54763 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-13 21:49:13 +00:00
Owen Anderson
49bfdd63f4 Switch this from std::map to DenseMap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54761 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-13 21:24:24 +00:00
Dan Gohman
b0cf29c5cf Initial checkin of the new "fast" instruction selection support. See
the comments in FastISelEmitter.cpp for details on what this is.
This is currently experimental and unusable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54751 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-13 20:19:35 +00:00
Dan Gohman
925a7e8ed6 Rename SelectionDAGISel's FastISel to Fast, to begin to make
room for the new FastISel instruction selection code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54749 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-13 19:47:40 +00:00
Anton Korobeynikov
f5b6a47bb5 Handle visibility printing with all generality. Remove bunch of duplicate code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54540 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-08 18:25:07 +00:00
Bruno Cardoso Lopes
e36bfe678d Add the remaining fp_round libcalls:
FPROUND_F80_F32, FPROUND_PPCF128_F32, 
FPROUND_F80_F64, FPROUND_PPCF128_F64

Support for soften float fp_round operands is added, Mips 
needs this to round f64->f32.

Also added support to soften float FABS result, Mips doesn't 
support double fabs results while in 'single float only' mode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54484 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-07 19:01:24 +00:00
Matthijs Kooijman
b3e15c0008 Silence a warning.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54462 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-07 13:36:30 +00:00
Evan Cheng
39fd6e81b1 Factor code that finalize PHI nodes, jump tables, etc. out of SelectBasicBlock. No functionality changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54438 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-07 00:43:25 +00:00
Dan Gohman
6da38a05f6 Clarify "node" vs. "value" in some comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54409 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-06 15:18:10 +00:00
Dan Gohman
ec89a364b8 Correct an assertion string.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54348 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-05 14:42:28 +00:00
Owen Anderson
bd3ba461eb - Fix SelectionDAG to generate correct CFGs.
- Add a basic machine-level dead block eliminator.

These two have to go together, since many other parts of the code generator are unable to handle the unreachable blocks otherwise created.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54333 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-04 23:54:43 +00:00
Dan Gohman
0b12aef490 Move SelectionDAG::viewGraph() out of line; as an inline function
it isn't always visible to gdb.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54228 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-30 18:48:53 +00:00
Mon P Wang
e3b3a7241c Added support for overloading intrinsics (atomics) based on pointers
to different address spaces.  This alters the naming scheme for those
intrinsics, e.g., atomic.load.add.i32 => atomic.load.add.i32.p0i32


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54195 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-30 04:36:53 +00:00
Dan Gohman
7ba145b0b4 Revert 54147.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54148 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-29 01:02:18 +00:00
Dan Gohman
b1e8cad61e Add x86 isel patterns to match what would be a ZERO_EXTEND_INREG operation,
which is represented in codegen as an 'and' operation. This matches them
with movz instructions, instead of leaving them to be matched by and
instructions with an immediate field.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54147 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-28 22:18:25 +00:00
Dan Gohman
fed90b6d09 Fold the useful features of alist and alist_node into ilist, and
a new ilist_node class, and remove them. Unlike alist_node,
ilist_node doesn't attempt to manage storage itself, so it avoids
the associated problems, including being opaque in gdb.

Adjust the Recycler class so that it doesn't depend on alist_node.
Also, change it to use explicit Size and Align parameters, allowing
it to work when the largest-sized node doesn't have the greatest
alignment requirement.

Change MachineInstr's MachineMemOperand list from a pool-backed
alist to a std::list for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54146 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-28 21:51:04 +00:00
Dan Gohman
ca425a2a98 Reword a comment to be less ambiguous.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54135 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-28 18:42:57 +00:00
Dan Gohman
475871a144 Rename SDOperand to SDValue.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54128 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-27 21:46:04 +00:00
Dan Gohman
8968450305 Tidy SDNode::use_iterator, and complete the transition to have it
parallel its analogue, Value::value_use_iterator. The operator* method
now returns the user, rather than the use.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54127 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-27 20:43:25 +00:00
Dan Gohman
2a6299543f Rename isOnlyUseOf to isOnlyUserOf.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54124 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-27 18:06:42 +00:00
Dan Gohman
7a24cdc4ed Improve comments for SDNode use-count methods. No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54123 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-27 17:44:52 +00:00
Duncan Sands
fcaa13a65c Fix error: ‘std::ostream’ has not been declared
when compiling with gcc 4.3.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54041 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-25 19:29:14 +00:00
Dan Gohman
58b65521f8 Add a #include for the uses of uint64_t.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54016 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-25 15:39:12 +00:00
Dan Gohman
922b3d2e67 Add a #include <cassert>, since this file use assert.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54003 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-25 00:44:19 +00:00