a7c3e0e120
Fix the types for NumElements variables, and add a comment
...
explaining why empty array constants use ValID::createUndef().
llvm-svn: 52636
2008-06-23 18:40:28 +00:00
54e02194a1
Tighten the conditions under which we do PRE, remove some unneeded code, and correct our preserved analyses list, since we
...
do now change the CFG by splitting critical edges during PRE.
llvm-svn: 52631
2008-06-23 17:49:45 +00:00
4d754bc97b
minor tidying of comments.
...
llvm-svn: 52630
2008-06-23 17:11:23 +00:00
210e6c1876
Remove two convenience constructors because they're now private, and the
...
private implementation doesn't really need the convenience.
llvm-svn: 52629
2008-06-23 16:48:17 +00:00
031f0bba15
Use std::copy instead of a loop.
...
llvm-svn: 52628
2008-06-23 16:45:24 +00:00
a469bdbcdf
More changes from Chris' review: simplify getIndices and avoid
...
copying its return value.
llvm-svn: 52627
2008-06-23 16:39:44 +00:00
b4e2637e9b
Duncan pointed out this code could be tidied.
...
llvm-svn: 52624
2008-06-23 15:29:14 +00:00
d803ce29a8
Port some integer multiplication fixes from LegalizeDAG.
...
Bail out with an error if there is no libcall available
for the given size of integer.
llvm-svn: 52622
2008-06-23 15:15:44 +00:00
73ceffa3df
Support for expanding the result of EXTRACT_ELEMENT.
...
llvm-svn: 52621
2008-06-23 15:08:15 +00:00
bc12dce8bb
Cleanup up LegalizeTypes handling of loads and
...
stores.
llvm-svn: 52620
2008-06-23 14:19:45 +00:00
00fdbd01e5
At Chris' suggestion, move the liveness and worklist datastructures into
...
instance variables so they can be allocated just once, and reuse the worklist
as the dead list as well.
llvm-svn: 52618
2008-06-23 06:13:12 +00:00
5ca5e02480
Improve LSR's dead-phi detection to handle use-def cycles
...
with more than two nodes.
llvm-svn: 52617
2008-06-22 20:44:02 +00:00
90071075e2
Use Loop::block_iterator.
...
llvm-svn: 52616
2008-06-22 20:18:58 +00:00
05e8973559
Generalize createSCEV to be able to form SCEV expressions from
...
ConstantExprs.
llvm-svn: 52615
2008-06-22 19:56:46 +00:00
6829fffaee
Use SCEVAddRecExpr::isAffine.
...
llvm-svn: 52614
2008-06-22 19:23:09 +00:00
1f2b2a4abe
Remove unnecessary #includes.
...
llvm-svn: 52613
2008-06-22 19:21:26 +00:00
0e4cf89f1a
Move a few more SCEVExpander methods out-of-line.
...
llvm-svn: 52612
2008-06-22 19:09:18 +00:00
6ff85681e4
Fix PR2369 by making scalarrepl more careful about promoting
...
structures. Its default threshold is to promote things that are
smaller than 128 bytes, which is sane. However, it is not sane
to do this for things that turn into 128 *registers*. Add a cap
on the number of registers introduced, defaulting to 128/4=32.
llvm-svn: 52611
2008-06-22 17:46:21 +00:00
5fb92e58de
Make custom lowering of ADD work correctly. This
...
fixes PR2476; patch by Richard Osborne. The same
problem exists for a bunch of other operators, but
I'm ignoring this because they will be automagically
fixed when the new LegalizeTypes infrastructure lands,
since it already solves this problem centrally.
llvm-svn: 52610
2008-06-22 09:42:16 +00:00
d3449df326
Fix for PR2479: correctly optimize expressions like (a > 13) & (a ==
...
15).
See also PR1800, which is about the signed case.
llvm-svn: 52608
2008-06-21 23:36:13 +00:00
158ff2c4a9
Use Instruction::eraseFromParent().
...
llvm-svn: 52606
2008-06-21 22:08:46 +00:00
c7076914ac
Use Function's arg_size() and size() methods.
...
llvm-svn: 52605
2008-06-21 22:06:54 +00:00
546505e7e1
Simplify some getNode calls.
...
llvm-svn: 52604
2008-06-21 22:06:07 +00:00
ea0452016e
canClobberPhysRegDefs shouldn't called without checking hasPhysRegDefs;
...
check this with an assert.
llvm-svn: 52603
2008-06-21 22:05:24 +00:00
33204b7c20
Avoid creating a redundant zero APInt.
...
llvm-svn: 52602
2008-06-21 22:03:12 +00:00
38c19aae38
Use clear() to zero an existing APInt.
...
llvm-svn: 52601
2008-06-21 22:02:15 +00:00
1ac5813726
Use back() instead of [size()-1].
...
llvm-svn: 52600
2008-06-21 22:00:54 +00:00
55083d5dd3
Use MachineBasicBlock::transferSuccessors.
...
llvm-svn: 52594
2008-06-21 20:21:19 +00:00
1cf5af9e42
Use static_cast instead of reinterpret_cast for casting void*.
...
llvm-svn: 52592
2008-06-21 20:17:03 +00:00
8459e0bc59
Fix warning when assertions disabled.
...
llvm-svn: 52590
2008-06-21 19:49:01 +00:00
e635acab67
fix warning when assertions disabled.
...
llvm-svn: 52589
2008-06-21 19:48:22 +00:00
18a3284a0a
fix warning when assertion disabled.
...
llvm-svn: 52588
2008-06-21 19:47:44 +00:00
106b046d83
fix some warnings when assertions are disabled.
...
llvm-svn: 52587
2008-06-21 19:47:03 +00:00
14b911d929
Remove a redundant return.
...
llvm-svn: 52585
2008-06-21 19:34:57 +00:00
46520a25a4
Remove ScheduleDAG's SUnitMap altogether. Instead, use SDNode's NodeId
...
field, which is otherwise unused after instruction selection, as an index
into the SUnit array.
llvm-svn: 52583
2008-06-21 19:18:17 +00:00
a4db3352f9
Add a priority queue class, which is a wrapper around std::priority_queue
...
and provides fairly efficient removal of arbitrary elements. Switch
ScheduleDAGRRList from std::set to this new priority queue.
llvm-svn: 52582
2008-06-21 18:35:25 +00:00
3bb8999719
Support for load/store of expanded float types. I
...
don't know if a truncating store is possible here,
but added support for it anyway.
llvm-svn: 52577
2008-06-21 17:00:47 +00:00
e6e1348275
Change ScheduleDAG's SUnitMap from DenseMap<SDNode*, vector<SUnit*> >
...
to DenseMap<SDNode*, SUnit*>, and adjust the way cloned SUnit nodes are
handled so that only the original node needs to be in the map.
This speeds up llc on 447.dealII.llvm.bc by about 2%.
llvm-svn: 52576
2008-06-21 15:52:51 +00:00
42bbca11cc
Enable PRE.
...
llvm-svn: 52574
2008-06-21 07:26:53 +00:00
f593a65497
Undo spill weight tweak. Need to investigate the performance regressions.
...
llvm-svn: 52572
2008-06-21 06:45:54 +00:00
4b49be1cbe
Simplify some template parameterization.
...
llvm-svn: 52571
2008-06-21 01:08:22 +00:00
33067210d1
Back out Matthijs' DAE patches. It's miscompiling gcc driver.
...
llvm-svn: 52570
2008-06-21 00:31:44 +00:00
efc67e78d7
Enhanced heuristic to determine the *best* register to spill. Instead of picking the register with the lowest spill weight. Consider (up to) 2 additional registers with spill weights that are close to the lowest spill weight. The one with fewest defs and uses that conflicts with the current interval (weighted by loop depth) is the spill candidate.
...
This is not always a win, but there are much more wins than loses and wins tend to be more noticeable.
llvm-svn: 52554
2008-06-20 21:45:16 +00:00
f362183c24
Share some code that is common between integer and
...
float expansion (and sometimes vector splitting too).
llvm-svn: 52548
2008-06-20 18:40:50 +00:00
49295b48eb
Rename the operation of turning a float type into an
...
integer of the same type. Before it was "promotion",
but this is confusing because it is quite different
to promotion of integers. Call it "softening" instead,
inspired by "soft float".
llvm-svn: 52546
2008-06-20 17:49:55 +00:00
3792c470d5
Clean up some uses of std::distance, now that we have allnodes_size.
...
llvm-svn: 52545
2008-06-20 17:15:19 +00:00
3ada1e118b
Clean up a use of std::distance.
...
llvm-svn: 52544
2008-06-20 17:11:32 +00:00
a5dd67f002
Tidy up some commments and use the getAggregateOperand and
...
getInsertedValueOperand accessors. Thanks Matthijs!
llvm-svn: 52543
2008-06-20 16:41:17 +00:00
b5210efb31
Fix the conditions under which SCCP should examine insertvalue
...
instructions. Thanks to Matthijs Kooijman for pointing this out!
llvm-svn: 52542
2008-06-20 16:39:44 +00:00
c456f9dfc6
80 column and trailing whitespace fixes.
...
llvm-svn: 52539
2008-06-20 15:34:07 +00:00
0c50b953c5
Don't let DeadArgumentElimination attempt to update callers when the return
...
type wasn't changed.
llvm-svn: 52538
2008-06-20 15:25:43 +00:00
9dc59b7666
Don't let DeadArgElimination change the return type ({} into void and {T}
...
into T) when no return values are actually dead.
llvm-svn: 52537
2008-06-20 15:16:45 +00:00
013b6a9a42
Explicitely track if any arguments or return values were removed in
...
DeadArgumentElimination and assert that the function type does not change if
nothing was changed. This should catch subtle changes in function type that are
not intended.
llvm-svn: 52536
2008-06-20 14:28:52 +00:00
e91aed6ce1
Remove debug output.
...
llvm-svn: 52535
2008-06-20 14:03:35 +00:00
8d32dee428
Recommit r52459, rewriting of the dead argument elimination pass.
...
This is a fixed version that no longer uses multimap::equal_range, which
resulted in a pointer invalidation problem.
Also, DAE::InspectedFunctions was not really necessary, so it got removed.
Lastly, this version no longer applies the extra arg hack on functions who did
not have any arguments to start with.
llvm-svn: 52532
2008-06-20 09:36:16 +00:00
78fbcafb53
Really disable PRE.
...
llvm-svn: 52531
2008-06-20 08:59:13 +00:00
d53bd2da98
Fix an error handling redefinition of linkonce functions where the
...
types differ. Patch by Nathan Keynes!
llvm-svn: 52527
2008-06-20 05:29:39 +00:00
f3ecd2d290
Fix PR2471, which is a bug involving an invalid promotion from a conditional load.
...
llvm-svn: 52525
2008-06-20 05:12:56 +00:00
9f337549a7
Add C binding for ExecutionEngine::addGlobalMapping.
...
llvm-svn: 52523
2008-06-20 02:16:11 +00:00
593a010c56
Teach ReturnInst lowering about aggregate return values.
...
llvm-svn: 52522
2008-06-20 01:29:26 +00:00
1b3ea963f7
Change around the data structures used to store availability sets, resulting in a GVN+PRE that is faster that GVN alone was before.
...
llvm-svn: 52521
2008-06-20 01:15:47 +00:00
041f9d03ff
Teach SCCP about insertvalue and extractvalue, and about
...
propagating constants across aggregate return values when
insertvalue and extractvalue are used.
llvm-svn: 52520
2008-06-20 01:15:44 +00:00
3b18fd7b02
Teach InlineFunction how to differentiate between multiple-value
...
return statements and aggregate returns so that it handles both
correctly.
llvm-svn: 52519
2008-06-20 01:03:44 +00:00
9598f930f3
Disable PRE for now. It seems to be breaking llvm-gcc bootstrapping.
...
llvm-svn: 52518
2008-06-20 01:01:07 +00:00
44b2c57e2b
Fix the index calculations for the extractvalue lowering code.
...
llvm-svn: 52517
2008-06-20 00:54:19 +00:00
c7a32fc8ca
Simplify the ComputeLinearIndex logic and fix a few bugs.
...
llvm-svn: 52516
2008-06-20 00:53:00 +00:00
d87e813e41
Simplify this code. Thanks Chris!
...
llvm-svn: 52514
2008-06-20 00:47:44 +00:00
be0429c558
ISD::UNDEF should be expanded recursively / iteratively.
...
llvm-svn: 52508
2008-06-19 22:01:11 +00:00
e780d66657
Add a hidden -disable-pre flag for testing purposes. This should be removed
...
once benchmarking is completed.
llvm-svn: 52506
2008-06-19 19:57:25 +00:00
fdf9f168b5
PRE requires that critical edges be split.
...
llvm-svn: 52505
2008-06-19 19:54:19 +00:00
cd6fb1d0a8
Remove dead code causing a warning.
...
llvm-svn: 52502
2008-06-19 18:00:44 +00:00
d6530872f3
Use the common API for adding instructions to basic blocks instead of
...
using BasicBlock::getInstList.
llvm-svn: 52500
2008-06-19 17:53:32 +00:00
ff21db851d
Be sure to remove values from the value numbering table after we delete them.
...
This fixes a failure on povray.
llvm-svn: 52499
2008-06-19 17:53:26 +00:00
ed2250990a
Use Instruction::moveBefore instead of manipulating the instruction list
...
directly.
llvm-svn: 52498
2008-06-19 17:47:47 +00:00
9eea470fcf
Avoid using BasicBlock::getInstList directly in a few places.
...
llvm-svn: 52497
2008-06-19 17:37:25 +00:00
45d3701fce
Revert support for insertvalue and extractvalue instructions for the moment.
...
GVN expects that all inputs which to an instruction fall somewhere in the value
hierarchy, which isn't true for these.
llvm-svn: 52496
2008-06-19 17:25:39 +00:00
6f880690b8
Use the transferSuccessors helper function.
...
llvm-svn: 52495
2008-06-19 17:22:29 +00:00
68f539e807
Delete dead code.
...
llvm-svn: 52494
2008-06-19 17:18:39 +00:00
0c71732497
Use a CallSite to find the nth argument of a call/invoke instruction instead of
...
using getOperand() directly. This makes things work with invoke instructions as
well.
llvm-svn: 52489
2008-06-19 08:53:24 +00:00
db356eea26
Fix some warnings reported by gcc-4.3. Hopefully
...
this still compiles on windows - I can't test!
llvm-svn: 52488
2008-06-19 08:47:31 +00:00
849fa11f15
Missed a check.
...
llvm-svn: 52487
2008-06-19 06:17:19 +00:00
8d66e98c92
Fix a bug with <8 x i16> shuffle lowering on X86 where parts of the
...
shuffle could be skipped. The check is invalid because the loop index i
doesn't correspond to the element actually inserted. The correct check is
already done a few lines earlier, for whether the element is already in
the right spot, so this shouldn't have any effect on the codegen for
code that was already correct.
llvm-svn: 52486
2008-06-19 06:09:51 +00:00
3c4ccc830e
Revert my last patch, which was causing regression test failures.
...
llvm-svn: 52485
2008-06-19 05:29:34 +00:00
0c8ef553f5
Coalesce copy from one register class to a sub register class. e.g. X86::MOV16to16_.
...
llvm-svn: 52480
2008-06-19 01:39:21 +00:00
18e46d455b
Cosmetic changes.
...
llvm-svn: 52479
2008-06-19 01:21:26 +00:00
2dbba985d5
Unneeded include's.
...
llvm-svn: 52478
2008-06-19 01:21:02 +00:00
55bc848640
Minor spiller tweak to unfavor reload into load/store instructions.
...
llvm-svn: 52477
2008-06-19 01:16:17 +00:00
80ef880b98
Insert empty slots into the instruction numbering in live intervals, so that we can more easily
...
add new instructions.
llvm-svn: 52475
2008-06-19 00:10:49 +00:00
3ea800fbad
Add support for extractvalue and insertvalue instructions in GVN.
...
llvm-svn: 52472
2008-06-18 21:59:00 +00:00
6a903bc601
Add local PRE to GVN. This only operates in cases where it would not increase code size, namely when the instantiated expression
...
would only need to be created in one predecessor.
llvm-svn: 52471
2008-06-18 21:41:49 +00:00
55a8524241
Fix the source line debug information for the Windows platform.
...
According to DWARF-2 specification, the line information is provided through an offset in the .debug_line section.
Replace the label reference that is used with a section offset.
llvm-svn: 52468
2008-06-18 19:27:37 +00:00
78119b4742
Fix the regressions on sext-misc.ll my patch yesterday caused.
...
llvm-svn: 52466
2008-06-18 18:11:55 +00:00
9094cc957e
Revert r52459, which was causing an infinite loop or massive slowdown on MultiSource/Applications/SPASS, and possibly others as well.
...
Please reapply once this is fixed.
llvm-svn: 52465
2008-06-18 17:32:16 +00:00
095ca74a7f
Move SCEVExpander::visitAddExpr out-of-line.
...
llvm-svn: 52464
2008-06-18 16:37:11 +00:00
be928e3b21
Move LSR's private isZero function to a public SCEV member
...
function, and make use of it in several places.
llvm-svn: 52463
2008-06-18 16:23:07 +00:00
964557fdf5
Rewrite the DeadArgumentElimination pass, to use a more explicit tracking of
...
dependencies between return values and/or arguments. Also make the handling of
arguments and return values the same.
The pass now looks properly inside returned structs, but only at the first
level (ie, not inside nested structs).
Also add a testcase for testing various variations of (multiple) dead rerturn
values.
llvm-svn: 52459
2008-06-18 11:12:53 +00:00
fd17357643
Reapply r52397 (make IPConstProp promote returned arguments), but fixed this
...
time. Sorry for the trouble!
This time, also add a testcase, which I should have done in the first place...
llvm-svn: 52455
2008-06-18 08:30:37 +00:00
1d260dfa3b
XOR32rr, etc. are not AsCheapAsMove, but MOV32ri, etc. are.
...
llvm-svn: 52454
2008-06-18 08:13:07 +00:00
97034598b1
Reapply r52396, it was unrelated to the breakage (that was caused by r52397, my
...
commit after this).
llvm-svn: 52453
2008-06-18 08:09:27 +00:00
c5618ebdb9
Complete support for two-address pass rematerialization. Now *almost* always a win.
...
llvm-svn: 52452
2008-06-18 07:49:14 +00:00
50d59478da
Cosmetic.
...
llvm-svn: 52450
2008-06-18 07:47:28 +00:00
ef36dcd10b
implement some simple bswap optimizations, rdar://5992453
...
llvm-svn: 52442
2008-06-18 04:33:20 +00:00
b5ee8b3e89
make truncate/sext elimination capable of changing phi's. This
...
implements rdar://6013816 and the testcase in Transforms/InstCombine/sext-misc.ll.
llvm-svn: 52440
2008-06-18 04:00:49 +00:00
f6a1466829
Unbreak DECLARE isel in pic mode.
...
llvm-svn: 52439
2008-06-18 02:48:27 +00:00
cd6b697945
Preserve dominance frontier while trivially unswitching loop.
...
llvm-svn: 52438
2008-06-18 02:16:38 +00:00
7cc14c55da
Auto-upgrade code for multiple-value return statements. This code
...
isn't actually called yet.
llvm-svn: 52435
2008-06-17 23:38:43 +00:00
d8ca05f4ee
In InsertValueInst's copy ctor, actually copy the operands.
...
llvm-svn: 52434
2008-06-17 23:25:49 +00:00
75f3732b23
We don't want to find dependencies within the same block in this case. It leads to incorrect results because
...
we're detecting something at or after the call we're querying on.
llvm-svn: 52433
2008-06-17 22:27:06 +00:00
4a3125ba29
Implement the ExtractValueInst::getIndexedType that accepts one
...
index value.
llvm-svn: 52432
2008-06-17 21:07:55 +00:00
f873ed1b10
Live-through live interval is [mbb start, mbb end+1].
...
llvm-svn: 52431
2008-06-17 20:13:36 +00:00
1eb69314fa
When extending a liveinterval by commuting, don't throw away the live ranges that are not affected.
...
llvm-svn: 52430
2008-06-17 20:11:16 +00:00
90ada832be
Consistently set "Buckets[NumBuckets] = reinterpret_cast<void*>(-1)" throughout FoldingSet.cpp.
...
llvm-svn: 52425
2008-06-17 19:12:43 +00:00
2505e0c36b
Add an insertBefore method for attaching previously unattached instructions,
...
such as those created by clone(), to a basic block.
llvm-svn: 52424
2008-06-17 18:29:27 +00:00
5e4188f1ac
It's not safe to remove SUBREG_TO_REG that looks like identity copies, e.g. movl %eax, %eax on x86-64 actually does a zero-extend.
...
llvm-svn: 52421
2008-06-17 17:59:16 +00:00
f51ed6a161
Add one more 'magic' define :)
...
llvm-svn: 52420
2008-06-17 17:57:43 +00:00
8e5d9214ba
Unbreak non-PPC builds
...
llvm-svn: 52419
2008-06-17 17:38:31 +00:00
7d7dcd52db
Provide generic hooks for icache invalidation. Add PPC implementation.
...
Patch by Gary Benson!
llvm-svn: 52418
2008-06-17 17:30:05 +00:00
aecc3750d1
revert recent patch which is causing widespread breakage.
...
llvm-svn: 52415
2008-06-17 17:06:43 +00:00
84a9055e27
Don't forget to initialize SymbolSearchingDisabled.
...
llvm-svn: 52414
2008-06-17 16:49:02 +00:00
4b50fde2c4
Fix typo that changed the logic to something wrong.
...
Spotted by Nick Lewycky.
llvm-svn: 52411
2008-06-17 15:55:30 +00:00
4c69995fb2
Split type expansion into ExpandInteger and ExpandFloat
...
rather than bundling them together. Rename FloatToInt
to PromoteFloat (better, if not perfect). Reorganize
files by types rather than by operations.
llvm-svn: 52408
2008-06-17 14:27:01 +00:00
332836d68d
Learn IPConstProp to propagate arguments that are directly returned. Strictly
...
speaking these are not constant values. However, when a function always returns
one of its arguments, then from the point of view of each caller the return
value is constant (or at least a known value) and can be replaced.
llvm-svn: 52397
2008-06-17 12:20:24 +00:00
f03c1ae407
Learn IPConstProp to look at individual return values and propagate them
...
individually.
Also learn IPConstProp how returning first class aggregates work, in addition
to old style multiple return instructions.
Modify the return-constants testscase to confirm this behaviour.
llvm-svn: 52396
2008-06-17 12:02:52 +00:00
8369c67cbd
Use a SmallVector instead of an array, since auto_ptr doesn't handle arrays
...
properly.
llvm-svn: 52390
2008-06-17 08:24:37 +00:00
1b08c4a709
add a new -enable-value-prop flag for llcbeta, that enables propagation
...
of value info (sign/zero ext info) from one MBB to another. This doesn't
handle much right now because of two limitations:
1) only handles zext/sext, not random bit propagation (no assert exists
for this)
2) doesn't handle phis.
llvm-svn: 52383
2008-06-17 06:09:18 +00:00
0ae829e5d1
Fix spelling.
...
llvm-svn: 52381
2008-06-17 03:24:13 +00:00
e47ca0940f
Rather than avoiding to wrap ISD::DECLARE GV operand in X86ISD::Wrapper, simply handle it at dagisel time with x86 specific isel code.
...
llvm-svn: 52377
2008-06-17 02:01:22 +00:00
56cdea6b3e
Add a missing ~ (dtor became ctor) which caused crashes on a bunch of stuff.
...
llvm-svn: 52374
2008-06-16 23:06:51 +00:00
1cde1f8d5e
Do not issue identity copies.
...
llvm-svn: 52373
2008-06-16 22:52:53 +00:00
ab0dccba6b
Refine the change in r52258 for avoiding use-before-def conditions
...
when changing the stride of a comparison so that it's slightly
more precise, by having it scan the instruction list to determine
if there is a use of the condition after the point where the
condition will be inserted.
llvm-svn: 52371
2008-06-16 22:34:15 +00:00
caefb0b5c7
switch TypeHasCycleThroughItself from using an std::set to using a SmallPtrSet,
...
this speeds up the linking testcase in PR1860 by 44% (.379 -> 0.263)
llvm-svn: 52365
2008-06-16 21:20:58 +00:00
9be15893c5
stop making PATypeHolder's so crazily.
...
llvm-svn: 52364
2008-06-16 21:17:12 +00:00
a5e30076a0
Horizontal-add instructions are not commutative.
...
llvm-svn: 52363
2008-06-16 21:16:24 +00:00
319e9a4f63
Switch over to SetVector to ensure same order of iterations do not vary across runs.
...
llvm-svn: 52361
2008-06-16 21:08:17 +00:00
eee6f995dd
use a real associative container for type association instead of using
...
a vector with a linear search. This speeds up the linking testcase
in PR1860 from 0.965s to 0.385s on my system.
llvm-svn: 52357
2008-06-16 21:00:18 +00:00
b90be27f8c
mpsadbw is commutable.
...
llvm-svn: 52352
2008-06-16 20:25:59 +00:00
fe677e9570
bail out sooner if we have two concrete but different types.
...
llvm-svn: 52351
2008-06-16 20:03:01 +00:00
85b66d18b9
simplify some code.
...
llvm-svn: 52350
2008-06-16 19:55:40 +00:00
8cb74995cc
Apply a patch from Nathan Keynes, which speeds up llvm-link on
...
the testcases in PR1860 from taking more than 1 hour (when I killed it)
to taking 1s.
llvm-svn: 52347
2008-06-16 19:48:08 +00:00
476e91ab75
Remove special case handling of empty MBBs now that we assign indices to them.
...
llvm-svn: 52345
2008-06-16 19:32:40 +00:00
9995302b02
handle vectors. Any integers that got here would necessarily be different already.
...
llvm-svn: 52341
2008-06-16 18:27:53 +00:00
8aa89e4181
Simplify ResolveTypes by pulling the null case out into the one
...
client that cares and simplifying its control flow.
Remove the DestST argument to ResolveTypes and RecursiveResolveTypes*
which are dead now.
llvm-svn: 52340
2008-06-16 18:19:05 +00:00
a72cdcd1a2
Iterating over SmallPtrSet is not deterministic.
...
llvm-svn: 52339
2008-06-16 18:17:09 +00:00
e9bb8552af
simplify RecursiveResolveTypes and ResolveTypes by pulling the naming out of
...
ResolveTypes into the one place that needs it.
llvm-svn: 52338
2008-06-16 18:11:40 +00:00
86d4f3a2a9
Add a new flag that disables symbol lookup with dlsym when set. This allows
...
a JIT client to completely control symbol lookup with the LazyFunctionCreator
interface.
llvm-svn: 52335
2008-06-16 17:44:14 +00:00
8b69e8a647
Add support for icache invalidation on non-darwin ppc systems.
...
Patch by Gary Benson!
llvm-svn: 52332
2008-06-16 17:04:06 +00:00
773b2d3ac3
Re-enable empty block indexing by default, since it doesn't seem to have any
...
impact on code quality or compile time.
llvm-svn: 52329
2008-06-16 16:58:24 +00:00
fa4d0b883a
Make BuildSubAggregate use FindInsertedElement again to prevent it from
...
inserting extractvalues. In particular, this prevents the insertion of
extractvalues that can't be folded away later. Also add an example of when this
stuff is needed.
llvm-svn: 52328
2008-06-16 14:13:46 +00:00
69801d4fd1
Make the InsertBefore argument to FindInsertedValue optional, so you can find an inserted value without modifying the code.
...
llvm-svn: 52319
2008-06-16 13:28:31 +00:00
86cda9e050
Pass around Instruction* instead of Instruction& in FindInsertedValue and friends.
...
llvm-svn: 52318
2008-06-16 13:13:08 +00:00
5cb387735d
80 column fixes.
...
llvm-svn: 52316
2008-06-16 12:57:37 +00:00
e92e18be5a
Move FindScalarValue from InstructionCombining.cpp to ValueTracking.cpp. While
...
I'm at it, rename it to FindInsertedValue.
The only functional change is that newly created instructions are no longer
added to instcombine's worklist, but that is not really necessary anyway (and
I'll commit some improvements next that will completely remove the need).
llvm-svn: 52315
2008-06-16 12:48:21 +00:00
06f0d441f7
Minor comment fix.
...
llvm-svn: 52312
2008-06-16 10:14:09 +00:00
37c1f5267b
Allow these transforms for types like i256 while
...
still excluding types like i1 (not byte sized)
and i120 (loading an i120 requires loading an i64,
an i32, an i16 and an i8, which is expensive).
llvm-svn: 52310
2008-06-16 08:14:38 +00:00
51c75c0c95
Fix read after free found by valgrind.
...
llvm-svn: 52309
2008-06-16 07:34:17 +00:00
03553bb59a
Add option to commuteInstruction() which forces it to create a new (commuted) instruction.
...
llvm-svn: 52308
2008-06-16 07:33:11 +00:00
e546c55e59
Make indexing empty basic blocks an option for the moment.
...
llvm-svn: 52306
2008-06-16 07:10:49 +00:00
fb46605e47
simplify some code by using a helper function. This really really
...
wants a 'nocapture' predicate.
llvm-svn: 52304
2008-06-16 06:38:26 +00:00
2d33297d00
move a bunch of predicates up into their own section
...
in this file, no other changes.
llvm-svn: 52303
2008-06-16 06:30:22 +00:00
fa48258a61
Other parts of this code treat noalias arguments as objects for
...
the purposes of escape analysis.
llvm-svn: 52302
2008-06-16 06:28:01 +00:00
b35d9b5e07
If we are checking to see if the result of a call aliases a
...
pointer derived from a local allocation, if the local allocation
never escapes, the pointers can't alias. This implements PR2436
llvm-svn: 52301
2008-06-16 06:19:11 +00:00
d813091cde
Assign indices to empty basic blocks. This will be necessary for StrongPHIElimination in the near future.
...
llvm-svn: 52300
2008-06-16 06:18:41 +00:00
98ad816f58
Refactor basicaa's main alias function somethin' fierce.
...
This fixes several minor bugs (such as returning noalias
for comparisons between external weak functions an null) but
is mostly a cleanup.
llvm-svn: 52299
2008-06-16 06:10:11 +00:00
91f4a0ff58
Switch from generating the int128 typedefs based on targetdata to generating
...
them based on the end-compiler's capabilities. This fixes PR2453
llvm-svn: 52297
2008-06-16 04:25:29 +00:00
1c9922703f
Fix the crash on SimplifyLibCalls/2005-05-20-sprintf-crash.ll
...
llvm-svn: 52295
2008-06-16 04:10:21 +00:00
7d6aac85c4
fix pr2460
...
llvm-svn: 52294
2008-06-16 04:02:40 +00:00
075293ff46
The transforms in visitEXTRACT_VECTOR_ELT are
...
not valid if the load is volatile. Hopefully
all wrong DAG combiner transforms of volatile
loads and stores have now been caught.
llvm-svn: 52293
2008-06-15 20:12:31 +00:00
0bc21c0551
LegalizeTypes support for INSERT_VECTOR_ELT with
...
a non-constant index.
llvm-svn: 52292
2008-06-15 20:00:14 +00:00
ae9753b29d
Fix PR2434. When scanning for exising binary operator to reuse don't
...
take into account the instrucion pointed by InsertPt. Thanks to it,
returning the new value of InsertPt to the InsertBinop() caller can be
avoided. The bug was, actually, in visitAddRecExpr() method which wasn't
correctly handling changes of InsertPt. There shouldn't be any
performance regression, as -gvn pass (run after -indvars) removes any
redundant binops.
llvm-svn: 52291
2008-06-15 19:07:39 +00:00
c6a6618e6a
Add a missing semicolon.
...
llvm-svn: 52290
2008-06-15 18:02:47 +00:00
2cc0abf260
Fix the sys::Path::getSuffix() implementation.
...
llvm-svn: 52288
2008-06-15 15:15:19 +00:00
24f99985b8
Fix the environment block that is passed to the CreateProcess function.
...
This bug made llvm-ld unable to function with "-native" option, since the process that was used to call 'gcc' was crashing.
llvm-svn: 52284
2008-06-15 03:54:39 +00:00
b1bfff53fe
Remove a redundant AfterLegalize check. Turn
...
on some code when !AfterLegalize - but since
this whole code section is turned off by an
"if (0)" it's not really turning anything on.
llvm-svn: 52276
2008-06-14 17:48:34 +00:00
8bf66ee13b
Change 'while' loop to 'do' loop.
...
Add a safety measure. It isn't safe to assume in ScalarEvolutionExpander that
all loops are in canonical form (but it should be safe for loops that have
AddRecs).
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
llvm-svn: 52275
2008-06-14 16:48:22 +00:00
f88d50bfcc
add missing atomic intrinsic from gcc
...
llvm-svn: 52270
2008-06-14 05:48:15 +00:00
a88cd4ea2a
Fix a case where tailcallelim wouldn't set the changed bit when it made a change.
...
llvm-svn: 52267
2008-06-14 00:49:48 +00:00
fb79059b85
Teach the spiller to commute instructions in order to fold a reload. This hits 410 times on 444.namd and 122 times on 252.eon.
...
llvm-svn: 52266
2008-06-13 23:58:02 +00:00
5de0a77a9b
Don't skip over instructions other than loads that might read memory
...
when trying to sink stores.
llvm-svn: 52259
2008-06-13 22:02:12 +00:00
9ad8c54aab
Protect ChangeCompareStride from situations in which it is possible
...
for it to generate use-before-def IR, such as in this testcase.
llvm-svn: 52258
2008-06-13 21:43:41 +00:00
9833a1b407
Make sure SimplifyStoreAtEndOfBlock doesn't mess with loops; the
...
structure checks are incorrect if the blocks aren't distinct.
Fixes PR2435.
llvm-svn: 52257
2008-06-13 21:17:49 +00:00
8651e9c584
Disable some DAG combiner optimizations that may be
...
wrong for volatile loads and stores. In fact this
is almost all of them! There are three types of
problems: (1) it is wrong to change the width of
a volatile memory access. These may be used to
do memory mapped i/o, in which case a load can have
an effect even if the result is not used. Consider
loading an i32 but only using the lower 8 bits. It
is wrong to change this into a load of an i8, because
you are no longer tickling the other three bytes. It
is also unwise to make a load/store wider. For
example, changing an i16 load into an i32 load is
wrong no matter how aligned things are, since the
fact of loading an additional 2 bytes can have
i/o side-effects. (2) it is wrong to change the
number of volatile load/stores: they may be counted
by the hardware. (3) it is wrong to change a volatile
load/store that requires one memory access into one
that requires several. For example on x86-32, you
can store a double in one processor operation, but to
store an i64 requires two (two i32 stores). In a
multi-threaded program you may want to bitcast an i64
to a double and store as a double because that will
occur atomically, and be indivisible to other threads.
So it would be wrong to convert the store-of-double
into a store of an i64, because this will become two
i32 stores - no longer atomic. My policy here is
to say that the number of processor operations for
an illegal operation is undefined. So it is alright
to change a store of an i64 (requires at least two
stores; but could be validly lowered to memcpy for
example) into a store of double (one processor op).
In short, if the new store is legal and has the same
size then I say that the transform is ok. It would
also be possible to say that transforms are always
ok if before they were illegal, whether after they
are illegal or not, but that's more awkward to do
and I doubt it buys us anything much.
However this exposed an interesting thing - on x86-32
a store of i64 is considered legal! That is because
operations are marked legal by default, regardless of
whether the type is legal or not. In some ways this
is clever: before type legalization this means that
operations on illegal types are considered legal;
after type legalization there are no illegal types
so now operations are only legal if they really are.
But I consider this to be too cunning for mere mortals.
Better to do things explicitly by testing AfterLegalize.
So I have changed things so that operations with illegal
types are considered illegal - indeed they can never
map to a machine operation. However this means that
the DAG combiner is more conservative because before
it was "accidentally" performing transforms where the
type was illegal because the operation was nonetheless
marked legal. So in a few such places I added a check
on AfterLegalize, which I suppose was actually just
forgotten before. This causes the DAG combiner to do
slightly more than it used to, which resulted in the X86
backend blowing up because it got a slightly surprising
node it wasn't expecting, so I tweaked it.
llvm-svn: 52254
2008-06-13 19:07:40 +00:00
25a7f5de92
Use recently added getTruncateOrZeroExtend method to make the code shorter.
...
llvm-svn: 52251
2008-06-13 17:02:03 +00:00
ed169d531d
Crash less. The i64 restriction in BinomialCoefficient caused some problems
...
with code that was expecting different bit widths for different values.
Make getTruncateOrZeroExtend a method on ScalarEvolution, and use it.
llvm-svn: 52248
2008-06-13 04:38:55 +00:00
431e9560b7
fix a minor deviation from the original in my previous commit
...
llvm-svn: 52247
2008-06-12 21:51:29 +00:00
f6d8e77027
op_iterator-ify some loops, low hanging fruit only, there is more
...
llvm-svn: 52246
2008-06-12 21:37:33 +00:00
89553cc42e
Do not speculatively execute an instruction by hoisting it to its predecessor BB if any of its operands are defined but not used in BB. The transformation will prevent the operand from being sunk into the use block.
...
llvm-svn: 52244
2008-06-12 21:15:59 +00:00
70fe16353a
Revert 52223.
...
llvm-svn: 52243
2008-06-12 20:55:39 +00:00
accdca1b03
Switch GVN to use ScopedHashTable.
...
llvm-svn: 52242
2008-06-12 19:25:32 +00:00
1cc695efd7
Fix redirection of stderr in sys::Program::ExecuteAndWait. There was logic
...
error that caused it to redirect stderr to stdout too often.
This fix is applied identically to the win32 code as well, but that is
untested.
--Thi line, and those below, will be ignored--
M System/Unix/Program.inc
M System/Win32/Program.inc
llvm-svn: 52233
2008-06-12 12:53:35 +00:00
616e484be4
Make I/O redirection handling in sys::Program a bit more consistent. No
...
functional changes. Win32 code is untested, but should work fine.
In the unix variant, rename RedirectFD to RedirectIO and let that function
handle empty and null paths instead of doing that in the caller 3 times. This
is the same as win32 already does it.
In the win32 variant, use Path::isEmpty() instead of checking the resulting
c_str() manually. This is the same as unix already does it.
llvm-svn: 52230
2008-06-12 10:47:18 +00:00
0babc61631
op_iterator-ify some loops, fix 80col violations
...
llvm-svn: 52226
2008-06-11 21:38:51 +00:00
729c4e95e2
Properly lower DYNAMIC_STACKALLOC - bracket all black magic with
...
CALLSEQ_BEGIN & CALLSEQ_END.
llvm-svn: 52225
2008-06-11 20:16:42 +00:00
933c743042
For now, avoid generating FP select instructions in order to speculatively execute integer arithmetic instructions. FP selects are more likely to be expensive (even compared to branch on fcmp). This is not a wonderful solution but I rather err on the side of conservative.
...
This fixes the heapsort performance regressions.
llvm-svn: 52224
2008-06-11 19:18:20 +00:00
f3c2902ead
Avoid duplicating loop header which leads to unnatural loops (and just seem like general badness to me, likely to cause code explosion).
...
Patch by Florian Brandner.
llvm-svn: 52223
2008-06-11 19:07:54 +00:00
b2fc72bfbf
Teach instruction combining about the extractvalue. It can succesfully fold
...
useless insert-extract chains, similar to how it folds them for vectors.
Add a testcase for this.
llvm-svn: 52217
2008-06-11 14:05:05 +00:00
bf17080ec2
Sometimes (rarely) nodes held in LegalizeTypes
...
maps can be deleted. This happens when RAUW
replaces a node N with another equivalent node
E, deleting the first node. Solve this by
adding (N, E) to ReplacedNodes, which is already
used to remap nodes to replacements. This means
that deleted nodes are being allowed in maps,
which can be delicate: the memory may be reused
for a new node which might get confused with the
old deleted node pointer hanging around in the
maps, so detect this and flush out maps if it
occurs (ExpungeNode). The expunging operation
is expensive, however it never occurs during
a llvm-gcc bootstrap or anywhere in the nightly
testsuite. It occurs three times in "make check":
Alpha/illegal-element-type.ll,
PowerPC/illegal-element-type.ll and
X86/mmx-shift.ll. If expunging proves to be too
expensive then there are other more complicated
ways of solving the problem.
In the normal case this patch adds the overhead
of a few more map lookups, which is hopefully
negligable.
llvm-svn: 52214
2008-06-11 11:42:12 +00:00
a2fef0c117
Better test for availability of __gnu_cxx::stdio_filebuf.
...
If this doesn't work, I'll write a configure test.
llvm-svn: 52213
2008-06-11 10:46:24 +00:00
3453c7bcb5
Clarify a comment.
...
llvm-svn: 52212
2008-06-11 09:00:12 +00:00
945f2f7fed
op_iterator-ify loops
...
llvm-svn: 52191
2008-06-10 22:03:26 +00:00
e38cc01244
Teach isGAPlusOffset to respect a GlobalAddressSDNode's offset
...
value, which is something that apparently isn't used much.
llvm-svn: 52158
2008-06-09 22:05:52 +00:00
27ae953278
Re-apply 52002, allowing the verifier to accept non-MRV struct return
...
types on functions, with adjustments so that it accepts both
new-style aggregate returns and old-style MRV returns, including those
with only a single member.
llvm-svn: 52157
2008-06-09 21:26:13 +00:00
6001b91d8e
CodeGen support for aggregate-value function arguments.
...
llvm-svn: 52156
2008-06-09 21:19:23 +00:00
67d0f332d5
Various tweaks related to apint codegen. No functionality
...
change for non-funky-sized integers.
llvm-svn: 52151
2008-06-09 15:48:25 +00:00
d485e4eb5c
Handle empty aggregate values.
...
llvm-svn: 52150
2008-06-09 15:21:47 +00:00
3ab46f1383
AsmParser support for immediate constant aggregate values.
...
llvm-svn: 52149
2008-06-09 14:45:02 +00:00
6e384fc28e
CPPBackend support for extractvalue and insertvalue.
...
llvm-svn: 52147
2008-06-09 14:12:10 +00:00
7be3fc7c97
Abort on an unrecognized opcode.
...
llvm-svn: 52146
2008-06-09 14:09:13 +00:00
62f63f4320
Update the CPP backend for the ConstantFP::get API change.
...
llvm-svn: 52144
2008-06-09 14:08:11 +00:00
93b6609ae2
Remove some DAG combiner assumptions about sizes
...
of integer types. Fix the isMask APInt method to
actually work (hopefully) rather than crashing
because it adds apints of different bitwidths.
It looks like isShiftedMask is also broken, but
I'm leaving that one to the APInt people (it is
not used anywhere).
llvm-svn: 52142
2008-06-09 11:32:28 +00:00
29479df2ac
add support for PIC on linux x86-64
...
llvm-svn: 52139
2008-06-09 09:52:31 +00:00
9c9f531a47
lower calls to abs to inline code, PR2337
...
llvm-svn: 52138
2008-06-09 08:26:51 +00:00
dbd595f22d
Fix PR2411, where ip constant prop would propagate the
...
result of a weak function.
llvm-svn: 52137
2008-06-09 07:58:07 +00:00
77e8ac4d03
use 'continue' to make the function linker simpler. When linking a strong
...
function into a weak function, zap the weak function body so that the
strong one overrides it. This fixes PR2410
llvm-svn: 52135
2008-06-09 07:47:34 +00:00
228a5f1867
minor changes to short circuit the 'no linkage' case earlier for
...
function bodies. We now don't try to unify types or handling type
mismatches if when linking an internal foo to an external foo.
llvm-svn: 52134
2008-06-09 07:36:11 +00:00
ec7441b365
simplify function visibility handling.
...
llvm-svn: 52133
2008-06-09 07:25:28 +00:00
11dd424539
Remove comparison methods for MVT. The main cause
...
of apint codegen failure is the DAG combiner doing
the wrong thing because it was comparing MVT's using
< rather than comparing the number of bits. Removing
the < method makes this mistake impossible to commit.
Instead, add helper methods for comparing bits and use
them.
llvm-svn: 52098
2008-06-08 20:54:56 +00:00
b4866ef30c
Limit the icmp+phi merging optimization to the cases where it is profitable:
...
don't make i1 phis when it won't be possible to eliminate them.
llvm-svn: 52097
2008-06-08 20:52:11 +00:00
041604ba9f
Added FP instruction formats.
...
llvm-svn: 52086
2008-06-08 01:39:36 +00:00
b7272db9f6
Temporarily reverting r52056. It's causing PPC to fail to bootstrap.
...
llvm-svn: 52085
2008-06-08 01:36:24 +00:00
f09c372191
Added support for FP Registers
...
llvm-svn: 52079
2008-06-07 21:32:41 +00:00
89200c9177
Speculatively execute a block when the the block is the then part of a triangle shape and it contains a single, side effect free, cheap instruction. The branch is eliminated by adding a select instruction. i.e.
...
Turn
BB:
%t1 = icmp
br i1 %t1, label %BB1, label %BB2
BB1:
%t3 = add %t2, c
br label BB2
BB2:
=>
BB:
%t1 = icmp
%t4 = add %t2, c
%t3 = select i1 %t1, %t2, %t3
llvm-svn: 52073
2008-06-07 08:52:29 +00:00
1a0835017a
Revert r52046. It broke cbe on x86 / Mac OS X.
...
llvm-svn: 52071
2008-06-07 07:50:29 +00:00
f6743d70ab
CodeGen support for insertvalue and extractvalue, and for loads and
...
stores of aggregate values.
llvm-svn: 52069
2008-06-07 02:02:36 +00:00
0bd08cf64c
Connect successors before creating the DAG node for the branch. This has
...
no visible functionality change, but enables a future patch where node creation
will update the CFG if it decides to create an unconditional rather than a conditional branch.
llvm-svn: 52067
2008-06-07 00:00:23 +00:00
cbcc495c1b
get rid of ExtractValueInst::init's Value argument, it is already passed to the UnaryInstruction ctor
...
llvm-svn: 52064
2008-06-06 21:06:32 +00:00
0b8f2c53a2
Typo.
...
llvm-svn: 52062
2008-06-06 21:00:10 +00:00
21ba184b27
make ExtractValueInst derived from UnaryInstruction
...
llvm-svn: 52061
2008-06-06 20:28:12 +00:00
c324be32c4
Enable stack coloring by default.
...
llvm-svn: 52057
2008-06-06 19:52:44 +00:00
9bf9110d93
PPC preferred loop alignment is 16.
...
llvm-svn: 52056
2008-06-06 19:50:46 +00:00
8549e4ca07
LoopSimplify preserves AA.
...
llvm-svn: 52053
2008-06-06 17:50:58 +00:00
656a917ad9
Print debug message only if there are dead passes.
...
llvm-svn: 52052
2008-06-06 17:50:36 +00:00
f69bc3df9b
Handle assembler identifiers specially in CBE. This fixes PR2418.
...
llvm-svn: 52046
2008-06-06 16:08:26 +00:00
f1123e58fc
Tighten up the abstraction slightly.
...
llvm-svn: 52045
2008-06-06 12:49:32 +00:00
13237ac3b9
Wrap MVT::ValueType in a struct to get type safety
...
and better control the abstraction. Rename the type
to MVT. To update out-of-tree patches, the main
thing to do is to rename MVT::ValueType to MVT, and
rewrite expressions like MVT::getSizeInBits(VT) in
the form VT.getSizeInBits(). Use VT.getSimpleVT()
to extract a MVT::SimpleValueType for use in switch
statements (you will get an assert failure if VT is
an extended value type - these shouldn't exist after
type legalization).
This results in a small speedup of codegen and no
new testsuite failures (x86-64 linux).
llvm-svn: 52044
2008-06-06 12:08:01 +00:00
1152ca9101
As Chris suggested, handle the situation if ShAmt larger than BitWidth,
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otherwise, opt might crash.
llvm-svn: 52041
2008-06-06 08:32:05 +00:00
6d7a144453
Refine stack slot interval weight computation.
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llvm-svn: 52040
2008-06-06 07:54:39 +00:00
5b3e396c24
Turn stdout into binary mode during bitcode emission.
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This is necessary on windows targets, since stdout is in text mode there.
Patch by Julien Lerouge!
llvm-svn: 52038
2008-06-06 07:24:01 +00:00
5e8644071d
Provide hooks for libgcc symbols' address resolution inside lli on mingw32.
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Patch by Julien Lerouge!
llvm-svn: 52037
2008-06-06 07:20:07 +00:00
1a6e0d613f
Added custom isel for MUL, SDIVREM, UDIVREM, SMUL_LOHI and UMUL_LOHI nodes
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MUL is not anymore directly matched because its a pseudoinstruction.
LogicI class fixed to zero-extend immediates.
llvm-svn: 52036
2008-06-06 06:37:31 +00:00
4eed3afda0
Added custom SELECT_CC lowering
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Added special isel for ADDE,SUBE and new patterns to match SUBC,ADDC
llvm-svn: 52031
2008-06-06 00:58:26 +00:00
1d304a99d7
Revert 52002.
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llvm-svn: 52030
2008-06-05 23:57:06 +00:00
3816aa7ef7
Expose a public interface to this pass.
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llvm-svn: 52029
2008-06-05 23:45:18 +00:00
0282d0247e
Let libcall semantics decide whether it knows about functions
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with definitions or not.
llvm-svn: 52028
2008-06-05 23:38:34 +00:00
9e76c047d1
Don't break strict aliasing.
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llvm-svn: 52026
2008-06-05 22:59:21 +00:00
05d1cd99b3
Remove debugging code.
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llvm-svn: 52016
2008-06-05 18:43:34 +00:00
65dc2b2e06
Use the newly created helper on LiveIntervals.
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llvm-svn: 52013
2008-06-05 17:22:53 +00:00
35e2dfe1cf
Add a helper for constructing new live ranges that ended from an instruction to the end of its MBB.
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llvm-svn: 52012
2008-06-05 17:15:43 +00:00
fbe1dc240c
If BitWidth equals to ShtAmt, the RHSKnownZero[BitWidth-ShiftAmt-1] will
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crash the opt. Just fix this.
Test case in llvm/test/Transforms/InstCombine/2008-06-05-ashr-crash.ll
llvm-svn: 52003
2008-06-05 14:23:44 +00:00
5eef32ba94
Change the Verifier to support returning first class aggregrates.
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Add a testcase for functions returning first class aggregrates.
llvm-svn: 52002
2008-06-05 14:00:36 +00:00
1247c07742
As comments said, for negative value, the arithmetic
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over-shift-right should return -1. So here it should be signed-extended,
when bitwidth larger than 64.
test case: llvm/test/ExecutionEngine/2008-06-05-APInt-OverAShr.ll
llvm-svn: 51999
2008-06-05 13:27:38 +00:00
Dan Gohman