5ca269e684
Basic FastISel support for floating-point constants.
...
llvm-svn: 55401
2008-08-27 01:09:54 +00:00
54aff7bb23
Fix handling of inttoptr and ptrtoint when unhandled operands are present.
...
llvm-svn: 55400
2008-08-27 00:35:37 +00:00
140549256f
Add support for fast isel of inttoptr and ptrtoint in the cases where truncation is not needed.
...
llvm-svn: 55399
2008-08-27 00:31:01 +00:00
ca1711a5b5
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.
llvm-svn: 55398
2008-08-26 23:46:32 +00:00
343310a715
Add support for fast isel of zext.
...
llvm-svn: 55396
2008-08-26 23:14:49 +00:00
abfdf928d8
disallow direct access to SDValue::ResNo, provide a getter instead
...
llvm-svn: 55394
2008-08-26 22:36:50 +00:00
655c1dc63d
Add support for fptosi of constants in fast isel.
...
llvm-svn: 55393
2008-08-26 22:34:28 +00:00
d56f73f2f2
Optimize SelectionDAG's topological sort to use one pass instead
...
of two, and to not need a scratch std::vector. Also, use the
SelectionDAG's topological sort in LegalizeDAG instead of having
a separate implementation.
llvm-svn: 55389
2008-08-26 21:42:18 +00:00
6fda9208d9
Refactor the bitcast code into its own function.
...
llvm-svn: 55387
2008-08-26 21:28:54 +00:00
b5e04bfb18
Make FastISel use the correct argument type when casting GEP indices.
...
llvm-svn: 55384
2008-08-26 20:57:08 +00:00
3bcbbece19
Don't select binary instructions with illegal types.
...
llvm-svn: 55383
2008-08-26 20:52:40 +00:00
3c4dc434ee
Add support for fast isel of sitofp, and remove some unnecessary and imprecise legality checks.
...
llvm-svn: 55381
2008-08-26 20:37:00 +00:00
e0ac9765b2
Use a combination of copyRegToReg and ISD::BIT_CONVERT when doing fast isel of bitcasts,
...
allowing it to support the full range of conversions people might ask for in a correct manner.
llvm-svn: 55378
2008-08-26 18:51:24 +00:00
27fb3dcbc7
Make TargetInstrInfo::copyRegToReg return a bool indicating whether the copy requested
...
was inserted or not. This allows bitcast in fast isel to properly handle the case
where an appropriate reg-to-reg copy is not available.
llvm-svn: 55375
2008-08-26 18:03:31 +00:00
bf05ebaccf
Add support for fast isel of non-constant fptosi instructions.
...
llvm-svn: 55373
2008-08-26 17:44:42 +00:00
54ef9f5831
typo fix.
...
llvm-svn: 55355
2008-08-26 06:07:47 +00:00
2e834906b9
Actually recycle SDNode allocations. SelectionDAG is using
...
RecyclingAllocator, but this change is needed for the nodes
to actually be recycled. This cuts SelectionDAG's memory
usage high-water-mark in half in some cases.
llvm-svn: 55351
2008-08-26 01:44:34 +00:00
8dd01ccdd8
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.
llvm-svn: 55345
2008-08-25 23:58:18 +00:00
2c067325d6
Unbreak build.
...
llvm-svn: 55342
2008-08-25 22:20:39 +00:00
126afc5cb9
Expand bitcast support in fast isel to support bitcasts of non-constant values by emitting reg-reg copies.
...
llvm-svn: 55340
2008-08-25 21:32:34 +00:00
32635dbfb2
Add support for fast isel of (integer) immediate materialization pattens, and use them to support
...
bitcast of constants in fast isel.
llvm-svn: 55325
2008-08-25 20:20:32 +00:00
a078d83e17
simplify PseudoSourceValue printing a bit. Unnest all of PseudoSourceValue.cpp from the llvm namespace.
...
llvm-svn: 55293
2008-08-24 20:37:32 +00:00
72e7d91591
Print PseudoSourceValue.
...
llvm-svn: 55291
2008-08-24 18:51:20 +00:00
f4bd5cf3dd
make sure to flush the stream after dumping, to make sure it goes out immediately.
...
llvm-svn: 55288
2008-08-24 18:28:30 +00:00
838aff36dd
get MachineConstantPool off std::ostream, onto raw_ostream. It would be
...
really nice if someone converted MachineFunction::print to raw_ostream.
llvm-svn: 55268
2008-08-23 22:53:13 +00:00
0c19df4871
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.
llvm-svn: 55263
2008-08-23 22:23:09 +00:00
48a3623591
Make MBBMap a DenseMap instead of a std::map.
...
llvm-svn: 55220
2008-08-23 02:44:46 +00:00
eb0cee91f6
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.
llvm-svn: 55219
2008-08-23 02:25:05 +00:00
95d1056831
Avoid creating shift-by-zero SDNodes in the common case of
...
i8* getelementptr. DAGCombine eliminates these, but this is
a fairly common case.
llvm-svn: 55214
2008-08-23 01:06:51 +00:00
ac37f9a9be
Move SelectionDAG's constructor out of line.
...
llvm-svn: 55212
2008-08-23 00:50:30 +00:00
2db3f8a095
Reapply r55191 and r55192.
...
llvm-svn: 55205
2008-08-22 21:28:19 +00:00
fc4f64eed0
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
llvm-svn: 55200
2008-08-22 20:51:05 +00:00
04968da460
Fix the InsertBranch call.
...
llvm-svn: 55192
2008-08-22 19:26:10 +00:00
87ff7058e7
Support non-fallthrough unconditional branches in FastISel.
...
llvm-svn: 55191
2008-08-22 19:21:41 +00:00
a2292c0d34
Add FastISel support for PHINodes. Machine PHI nodes
...
are not yet updated properly, but that's a separate
task.
llvm-svn: 55187
2008-08-22 17:37:48 +00:00
14714cb4fa
Fix SmallVector's size calculation so that a size of 0 is
...
handled correctly, and change a few SmallVector uses to use
size 0 to more clearly reflect their intent.
llvm-svn: 55181
2008-08-22 16:07:55 +00:00
5fc8ab6d18
consolidate DenseMapInfo implementations, and add one for std::pair.
...
Patch contributed by m-s.
llvm-svn: 55167
2008-08-22 05:08:25 +00:00
49e19e906f
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.
llvm-svn: 55156
2008-08-22 00:20:26 +00:00
25084af26a
Remove tabs.
...
llvm-svn: 55154
2008-08-22 00:04:26 +00:00
893ce348a7
Remove unneeded #include.
...
llvm-svn: 55134
2008-08-21 19:51:25 +00:00
2af34bd309
Add libcalls for the new rounding opcodes.
...
llvm-svn: 55133
2008-08-21 18:38:14 +00:00
c6337ac069
Add libm-oriented ISD opcodes for rounding operations.
...
llvm-svn: 55130
2008-08-21 17:55:02 +00:00
6a7461ad9b
Have FastISel skip the multiply by 1 for getelementptr on i8*.
...
llvm-svn: 55129
2008-08-21 17:37:05 +00:00
efb7d2d03d
MVT::getMVT uses iPTR for pointer types, while we need the actual
...
intptr_t type in this case. FastISel can now select simple
getelementptr instructions.
llvm-svn: 55125
2008-08-21 17:25:26 +00:00
75ea0b83c5
Elements in DeadNodeSet are checked for use_empty() before they
...
are actually deleted, so it's not necessary to remove re-used
nodes from the set.
llvm-svn: 55123
2008-08-21 16:24:54 +00:00
fe9056584b
Basic fast-isel support for instructions with constant int operands.
...
llvm-svn: 55099
2008-08-21 01:41:07 +00:00
4b5c038cd0
Type of first GEP operand is always the same as the target pointer type.
...
llvm-svn: 55097
2008-08-21 01:19:11 +00:00
9371964f47
Use raw_ostream throughout the AsmPrinter.
...
llvm-svn: 55092
2008-08-21 00:14:44 +00:00
6a0780cdd7
Fix unused variable warnings.
...
llvm-svn: 55089
2008-08-20 23:53:10 +00:00
864fcc198d
First cut, un-optimized (and untested) fast isel lowering of GetElementPtrInst.
...
llvm-svn: 55085
2008-08-20 22:45:34 +00:00
a4305cec93
Simplify the BuildMI calls even more.
...
llvm-svn: 55077
2008-08-20 21:10:53 +00:00
02c84b8910
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.
llvm-svn: 55076
2008-08-20 21:05:57 +00:00
43d1c7c607
Dump the instruction that foiled ISel even when -debug is not used.
...
llvm-svn: 55075
2008-08-20 20:47:32 +00:00
cd01e89852
Don't hoist instructions that define a physical register.
...
llvm-svn: 55074
2008-08-20 20:32:05 +00:00
07a34a5f69
Make more use of the BuildMI API.
...
llvm-svn: 55072
2008-08-20 18:16:32 +00:00
24e8f0cfe6
Minor code reorganization.
...
llvm-svn: 55071
2008-08-20 18:10:48 +00:00
2471f6ce0f
Minor whitespace cleanup.
...
llvm-svn: 55070
2008-08-20 18:09:38 +00:00
39a5ffb03f
Fix 80 column violation.
...
llvm-svn: 55069
2008-08-20 18:09:02 +00:00
7b9cd58596
Kill off SimpleBBISel, it's replaced by FastISel.
...
llvm-svn: 55067
2008-08-20 17:50:32 +00:00
837c13a029
Disable DAGCombine's alignment inference in "fast" codegen mode.
...
llvm-svn: 55059
2008-08-20 16:30:28 +00:00
2da2bedc72
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.
llvm-svn: 55058
2008-08-20 15:58:01 +00:00
f6aa60ff71
Use BitVector instead of std::vector<unsigned char>.
...
llvm-svn: 55054
2008-08-20 14:58:41 +00:00
c63a46ef39
Avoid an empty-if-body warning in release builds.
...
llvm-svn: 55050
2008-08-20 14:00:56 +00:00
1ed0681284
Fix indentation.
...
llvm-svn: 55049
2008-08-20 13:50:12 +00:00
e8f9a00424
Fix FastISel to recognize that the last block in the function does
...
not have a fall-through successor.
llvm-svn: 55033
2008-08-20 01:17:01 +00:00
98265cae87
Fix a leak in the FastISel code that Chris pointed out.
...
llvm-svn: 55031
2008-08-20 00:56:17 +00:00
847ebb90b8
Add support for running SelectionDAG if FastISel fails. This is under
...
a command-line option, so that the default behavior is an abort, which
is useful for exposing code that isn't supported yet.
llvm-svn: 55028
2008-08-20 00:47:54 +00:00
f6884373c2
Fix FastISel to recognize unhandled operands, such as constants
...
that aren't available as virtual registers (for now).
llvm-svn: 55026
2008-08-20 00:35:17 +00:00
b16a7783c5
Add FastISel support for floating-point operations.
...
llvm-svn: 55021
2008-08-20 00:23:20 +00:00
a3e4d5a5e1
Add FastISel support for several more binary operators.
...
llvm-svn: 55020
2008-08-20 00:11:48 +00:00
697284fe0a
Add code to call FastISel, and a command-line option to enable it.
...
llvm-svn: 55015
2008-08-19 22:33:34 +00:00
214343fbbe
Support unconditional fall-through branches in FastISel.
...
llvm-svn: 55014
2008-08-19 22:31:46 +00:00
2a458775db
Allow the fast-path spilling code to attempt folding, but still leaving out remat and splitting.
...
llvm-svn: 55012
2008-08-19 22:12:11 +00:00
547ce65467
Use the BuildMI overload that sets up a destination register
...
instead of the one that doesn't and then adding it manually.
llvm-svn: 55006
2008-08-19 20:46:54 +00:00
c55fdcc935
Handle the case where target-specific fastisel code doesn't have
...
a desired opcode.
llvm-svn: 55005
2008-08-19 20:43:22 +00:00
c75ae13566
The fast-path still needs to set kill markers and spill/restore points as appropriate.
...
With this patch, all of MultiSource/Applications and all of SPEC2000/2006 pass with
the SimpleSpiller and this fast-path enabled.
llvm-svn: 55000
2008-08-19 20:09:52 +00:00
1298fb90d3
Delete a dead field.
...
llvm-svn: 54995
2008-08-19 17:09:26 +00:00
72bd9dfdad
[PR2327] Leverage TargetRegisterInfo to compute frame offsets for GC metadata.
...
llvm-svn: 54994
2008-08-19 17:06:35 +00:00
5d2a9a4ae6
don't use the result of WriteTypeSymbolic or WriteAsOperand.
...
llvm-svn: 54978
2008-08-19 04:44:30 +00:00
7f3bfbd23b
Make SimpleSpiller respect subregister indices.
...
llvm-svn: 54968
2008-08-19 01:05:33 +00:00
442dc6fed0
Add a flag to enable the fast spilling path.
...
llvm-svn: 54958
2008-08-19 00:17:30 +00:00
a57c57067d
Fix a few more bugs:
...
1) Assign stack slots to new temporaries.
2) Don't insert an interval into the return vector more than once.
llvm-svn: 54956
2008-08-18 23:41:04 +00:00
60f6b2cac0
Fix several bugs in the new fast-path:
...
1) Remove an incorrect assertion.
2) Set the stack slot weight properly.
3) Resize the VirtRegMap when needed.
llvm-svn: 54949
2008-08-18 21:20:32 +00:00
e996a12f27
Clients of addIntervalForSpills expect the added intervals to be returned sorted by starting index.
...
llvm-svn: 54939
2008-08-18 19:52:22 +00:00
75e27d2402
Simplify the fast-patch interval spilling by using MachineRegisterInfo::reg_iterator.
...
llvm-svn: 54930
2008-08-18 18:38:12 +00:00
cc9314ba32
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.
llvm-svn: 54924
2008-08-18 18:05:32 +00:00
cf596eb12f
Don't hoist instructions that have implicit uses or defines. Before, it was
...
hoisting out some "test" and "cmp" instructions. This was obvious badness.
llvm-svn: 54908
2008-08-18 00:33:49 +00:00
aa8ab4501a
Don't require Registry specializations to define random static variables.
...
llvm-svn: 54902
2008-08-17 19:08:34 +00:00
86e7d0a1df
Drop an unnecessary include.
...
llvm-svn: 54901
2008-08-17 18:54:05 +00:00
d930f913e6
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.
llvm-svn: 54899
2008-08-17 18:44:35 +00:00
e431adbfc7
Don't instantiate GC metadata for declarations.
...
llvm-svn: 54895
2008-08-17 16:18:50 +00:00
afbc02ba50
Fix merge error
...
llvm-svn: 54891
2008-08-17 13:56:03 +00:00
9cb0e94dc7
Move all assembler printing related stuff into new libAsmPrinter
...
llvm-svn: 54885
2008-08-17 13:53:04 +00:00
f01991a0d4
Factor out asmprinters from collector interface.
...
llvm-svn: 54884
2008-08-17 13:52:35 +00:00
bcef14d2e4
Factor GC metadata table assembly generation out of Collector in preparation for splitting AsmPrinter into its own library.
...
llvm-svn: 54881
2008-08-17 12:56:54 +00:00
dbe06d3b69
Factor GC metadata table assembly generation out of Collector in preparation for splitting AsmPrinter into its own library.
...
llvm-svn: 54880
2008-08-17 12:08:44 +00:00
17f7165f84
Rework the routines that convert AP[S]Int into a string. Now, instead of
...
returning an std::string by value, it fills in a SmallString/SmallVector
passed in. This significantly reduces string thrashing in some cases.
More specifically, this:
- Adds an operator<< and a print method for APInt that allows you to
directly send them to an ostream.
- Reimplements APInt::toString to be much simpler and more efficient
algorithmically in addition to not thrashing strings quite as much.
This speeds up llvm-dis on kc++ by 7%, and may also slightly speed up the
asmprinter. This also fixes a bug I introduced into the asmwriter in a
previous patch w.r.t. alias printing.
llvm-svn: 54873
2008-08-17 07:19:36 +00:00
bd890b1faf
Move SLEB/ULEB size calculation routines from AsmPrinter to TargetAsmInfo. This makes JIT asmprinter-free.
...
llvm-svn: 54843
2008-08-16 12:57:46 +00:00
d669b9b671
Convert several std::vectors over to SmallVector, and use reserve() as appropriate for cases where std::vector is still used.
...
llvm-svn: 54820
2008-08-15 18:49:41 +00:00
14738120ba
Use SmallSet instead of std::set to save allocations.
...
llvm-svn: 54810
2008-08-14 23:41:38 +00:00
96631091df
Move MachineInstr::getOpcode inline.
...
llvm-svn: 54807
2008-08-14 23:25:30 +00:00
4f6bf04616
Convert uses of std::vector in TargetInstrInfo to SmallVector. This change had to be propoagated down into all the targets and up into all clients of this API.
...
llvm-svn: 54802
2008-08-14 22:49:33 +00:00
c44423853a
Make FastISel's constructor protected, and give it a destructor.
...
llvm-svn: 54793
2008-08-14 21:51:29 +00:00
1b351d42bb
Remove more uses of std::set.
...
llvm-svn: 54787
2008-08-14 21:01:00 +00:00
550c9af91f
Improve support for vector casts in LLVM IR and CodeGen.
...
llvm-svn: 54784
2008-08-14 20:04:46 +00:00
fa8b2ea41b
Speed up addRegisterDead by adding more fast checks before performing the expensive
...
subregister query, and by increasing the size of the subregister hashtable so
that there are fewer collisions.
llvm-svn: 54781
2008-08-14 18:34:18 +00:00
8de6d22392
Use empty() instead of begin() == end().
...
llvm-svn: 54780
2008-08-14 18:13:49 +00:00
99e911fb16
Get rid of a use of std::map.
...
llvm-svn: 54770
2008-08-13 23:36:23 +00:00
6134fbccef
Fix a bogus srem rule - a negative value srem'd by a power-of-2
...
can have a non-negative result; for example, -16%16 is 0. Also,
clarify the related comments. This fixes PR2670.
llvm-svn: 54767
2008-08-13 23:12:35 +00:00
706f6b7899
Expunge the last uses of std::map from LiveIntervals.
...
llvm-svn: 54766
2008-08-13 22:28:50 +00:00
767b5cc7fd
Move r2iMap_ over to DenseMap from std::map.
...
llvm-svn: 54765
2008-08-13 22:08:30 +00:00
7e3c392248
Allow SelectionDAG to create EXTRACT_VECTOR_ELT nodes with
...
non-constant indices. Only a few of the peephole checks require
a constant index.
llvm-svn: 54764
2008-08-13 21:51:37 +00:00
51f689a652
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.
llvm-svn: 54763
2008-08-13 21:49:13 +00:00
b2226e21c3
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.
llvm-svn: 54751
2008-08-13 20:19:35 +00:00
a7b8aed469
Rename SelectionDAGISel's FastISel to Fast, to begin to make
...
room for the new FastISel instruction selection code.
llvm-svn: 54749
2008-08-13 19:47:40 +00:00
ef96ac4f95
Get rid of unused variable.
...
llvm-svn: 54742
2008-08-13 17:44:52 +00:00
65fce4d813
1) Merge entire live intervals instead of parts of them.
...
2) Conditionalize temporary insertion if we don't need it.
llvm-svn: 54741
2008-08-13 17:25:42 +00:00
23785a1679
Correct the filename in the top-of-file comment.
...
llvm-svn: 54688
2008-08-12 17:42:33 +00:00
127bb03b8c
Take the FrameOffset into account when computing the alignment
...
of stack objects. This fixes PR2656.
llvm-svn: 54646
2008-08-11 18:27:03 +00:00
ada201c8c1
Fix some typos. Apparently I think C needs a power-of operator.
...
llvm-svn: 54574
2008-08-09 03:48:46 +00:00
5927883970
Have IRBuilder take a template argument on whether or not to preserve
...
names. This can save a lot of allocations if you aren't going to be
looking at the output.
llvm-svn: 54546
2008-08-08 19:39:37 +00:00
ed47329174
Handle visibility printing with all generality. Remove bunch of duplicate code.
...
llvm-svn: 54540
2008-08-08 18:25:07 +00:00
dfb0b6952a
Reduce the entries in a phi before testing it for deadness, because removing the entries might make it dead.
...
llvm-svn: 54535
2008-08-08 18:00:05 +00:00
38aa7de6e9
Add skeleton of simple basic block instruction selector.
...
llvm-svn: 54522
2008-08-08 07:27:28 +00:00
42a19b6933
Don't crash printing the asm for a ConstantExpr PtrToInt just because the int
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is narrower than the pointer. This testcase emits:
.byte (((17) - 16) & 255)
llvm-svn: 54517
2008-08-08 06:34:07 +00:00
de5161fdf2
Add the remaining fp_round libcalls:
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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.
llvm-svn: 54484
2008-08-07 19:01:24 +00:00
d172c15ab0
Do a dominator walk when scheduling copies, rather than a DFS on the CFG. Also, fix a few problems when creating
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live intervals for temporaries created by phi elimination.
llvm-svn: 54483
2008-08-07 18:28:07 +00:00
527ca7e253
Re-enable elimination of unnecessary SUBREG_TO_REG instructions in
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LowerSubregs, and fix an x86-64 isel bug that this exposed.
SUBREG_TO_REG for x86-64 implicit zero extension is only safe for
isel to generate when the source is known to always have zeros in
the high 32 bits. The EXTRACT_SUBREG instruction does not clear
the high 32 bits.
llvm-svn: 54444
2008-08-07 02:54:50 +00:00
0638115a6e
Factor code that finalize PHI nodes, jump tables, etc. out of SelectBasicBlock. No functionality changes.
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llvm-svn: 54438
2008-08-07 00:43:25 +00:00
c6d527067b
SDISel's constant branch folding can fold away self-loops, which doesn't result in any dead blocks, but
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rather an incorrect phi input. Add code to UnreachableMachineBlockElim to get rid of these entries.
llvm-svn: 54432
2008-08-06 23:16:52 +00:00
8a8d6f0a78
Correct handle cases where two phis are coalesced together, and correct break up the case where two different
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phis want to coalesce with the same vreg.
llvm-svn: 54426
2008-08-06 22:08:58 +00:00
d184929176
Oops, didn't mean to commit this.
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llvm-svn: 54425
2008-08-06 20:58:38 +00:00
987b5057d3
We don't need to try to coalesce input vregs that are the same as the output vreg.
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llvm-svn: 54422
2008-08-06 20:29:20 +00:00
f9fca2f2dc
Only trim a live interval if the register is not used after the PHI node.
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llvm-svn: 54421
2008-08-06 18:36:17 +00:00
03dddbbed5
Only remap each VNInfo once when doing renumbering.
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llvm-svn: 54420
2008-08-06 18:35:45 +00:00
3d4c06dd54
Fix breakage on ARM/2008-04-10-ScavengerAssert.ll.
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llvm-svn: 54378
2008-08-05 22:24:40 +00:00
aa33b932bd
Fix PR2596: out of bound reference.
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llvm-svn: 54375
2008-08-05 21:51:46 +00:00
bdaed55ef3
Correctly handle replacement and removal of PHIs with one incoming register.
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llvm-svn: 54374
2008-08-05 21:40:45 +00:00
d9b88a85f2
Oops, we were already checking for dead phis. Handle this the proper way, then.
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llvm-svn: 54371
2008-08-05 21:18:51 +00:00
d4ffa4eb57
We don't need to update live intervals for dead PHIs.
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llvm-svn: 54369
2008-08-05 20:51:26 +00:00
7c42ac4133
Remove the -disable-correct-folding option, which was ugly and is no longer needed.
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llvm-svn: 54361
2008-08-05 18:27:54 +00:00
e955c481fd
Fix several const-correctness issues, resolving some -Wcast-qual warnings.
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llvm-svn: 54349
2008-08-05 14:45:15 +00:00
a4d6d884d6
Remove #if 0.
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llvm-svn: 54347
2008-08-05 07:20:57 +00:00
0ca10c9572
Fix PR2568: Fix bug that cause redudant kill marker after its live interval has been extended due to coalescing.
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llvm-svn: 54346
2008-08-05 07:10:38 +00:00
9f515394d3
Remove unneeded iteration. Thanks to Dan for the feedback.
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llvm-svn: 54337
2008-08-05 00:30:10 +00:00
bbeb8f0807
This option doesn't need to be a target option. It can be in SDISel instead.
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llvm-svn: 54336
2008-08-05 00:27:28 +00:00
a102290bdc
- Fix SelectionDAG to generate correct CFGs.
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- 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.
llvm-svn: 54333
2008-08-04 23:54:43 +00:00
90c724cadc
Fix SDISel lowering of PHI nodes to use ComputeValueVTs.
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This allows it to work correctly on aggregate values.
This fixes PR2623.
llvm-svn: 54331
2008-08-04 23:42:46 +00:00
6e023e63cd
Fix SDISel lowering of zeroinitializer and undef to use ComputeValueVTs.
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This allows it to work correctly on nested aggregate values.
This fixes PR2625.
llvm-svn: 54330
2008-08-04 23:30:41 +00:00
c31eb205c1
Add a flag to disable jump table generation (all
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switches use the binary search algorithm) for
environments that don't support it. PPC64 JIT
is such an environment; turn the flag on for that.
llvm-svn: 54248
2008-07-31 18:13:12 +00:00
Dan Gohman