e397dded7b
MC: Put back the MCFragment vtable, so subclasses are destroyed properly (duh).
...
llvm-svn: 109649
2010-07-28 20:28:45 +00:00
a7e5a24093
Define a maximum supported alignment value for load, store, and
...
alloca instructions (constrained by their internal encoding),
and add error checking for it. Fix an instcombine bug which
generated huge alignment values (null is infinitely aligned).
This fixes undefined behavior noticed by John Regehr.
llvm-svn: 109643
2010-07-28 20:12:04 +00:00
0ff2c110ad
Print out the regclass of any virtual registers used by a machine instruction.
...
llvm-svn: 109608
2010-07-28 18:35:46 +00:00
b7b5a7dff0
Unbreak my CMake build, say you'll compile for me again...
...
llvm-svn: 109598
2010-07-28 17:17:46 +00:00
1da02dfbe3
Fix this code to avoid decrementing an iterator past the beginning
...
of a std::vector.
llvm-svn: 109597
2010-07-28 17:15:36 +00:00
9cd20bf792
When user code intentionally dereferences null, the alignment of the
...
dereference is theoretically infinite. Put a cap on the computed
alignment to avoid overflow, noticed by John Regehr.
llvm-svn: 109596
2010-07-28 17:14:23 +00:00
32f889e552
Do GEP offset calculations with unsigned math rather than signed math
...
to avoid undefined behavior on overflow, noticed by John Regehr.
llvm-svn: 109594
2010-07-28 17:11:36 +00:00
f0084e1333
simplify
...
llvm-svn: 109589
2010-07-28 15:52:43 +00:00
19a3b37441
Support: Add CrashRecoveryContext helper object.
...
- Designed as a simple wrapper to allow clients to attempt to catch crashes
(memory errors, assertion violations, etc.) and do some kind of recovery.
- Currently doesn't actually attempt to catch crashes.
llvm-svn: 109586
2010-07-28 15:40:20 +00:00
e497e5ef46
simplify
...
llvm-svn: 109585
2010-07-28 15:31:37 +00:00
0a970698da
use Value* constructor of CallSite to create potentially improper site, and test that
...
llvm-svn: 109581
2010-07-28 14:28:18 +00:00
5bf74d648d
use Value* constructor of CallSite to create potentially improper site, and test that
...
llvm-svn: 109580
2010-07-28 12:35:54 +00:00
67a970bff2
use Value* constructor of CallSite to create potentially improper site
...
llvm-svn: 109579
2010-07-28 12:19:46 +00:00
7cf6056484
simplify
...
llvm-svn: 109578
2010-07-28 10:57:28 +00:00
2e2503cd8d
simplify
...
llvm-svn: 109577
2010-07-28 10:46:09 +00:00
7a066723d0
Make SCEVCallbackVH::allUsesReplacedWith update the old SCEVUnknown
...
object, as it may still be referenced by SCEVs not cleaned up by the
use list traversal.
Also, in ScalarEvolution::forgetValue, only check for a SCEVUnknown
object for the original value, not for any value in the use list,
because other SCEVUnknown values aren't necessary obsolete at that
point.
llvm-svn: 109570
2010-07-28 01:09:07 +00:00
8aeb0fb5ca
Make SCEVCallbackVH::allUsesReplacedWith unconditionally delete
...
the old value.
llvm-svn: 109567
2010-07-28 00:28:25 +00:00
53afc8f06a
Implement a vectorized algorithm for <16 x i8> << <16 x i8>
...
This is about 4x faster and smaller than the existing scalarization.
llvm-svn: 109566
2010-07-28 00:21:48 +00:00
aac5a72139
Rearrange several datastructures in LazyValueInfo to improve compile time.
...
This is still not perfect, but better than it was before.
llvm-svn: 109563
2010-07-27 23:58:11 +00:00
0630a71742
reintroduce original (asserting) semantics of CallSite(Instruction *II)
...
add instead a CallSite(Value* V) constructor that is consistent with ImmutableCallSize
and use that one in client code
llvm-svn: 109553
2010-07-27 22:53:28 +00:00
269a6da023
~40% faster vector shl <4 x i32> on SSE 4.1 Larger improvements for smaller types coming in future patches.
...
For:
define <2 x i64> @shl(<4 x i32> %r, <4 x i32> %a) nounwind readnone ssp {
entry:
%shl = shl <4 x i32> %r, %a ; <<4 x i32>> [#uses=1]
%tmp2 = bitcast <4 x i32> %shl to <2 x i64> ; <<2 x i64>> [#uses=1]
ret <2 x i64> %tmp2
}
We get:
_shl: ## @shl
pslld $23, %xmm1
paddd LCPI0_0, %xmm1
cvttps2dq %xmm1, %xmm1
pmulld %xmm1, %xmm0
ret
Instead of:
_shl: ## @shl
pshufd $3, %xmm0, %xmm2
movd %xmm2, %eax
pshufd $3, %xmm1, %xmm2
movd %xmm2, %ecx
shll %cl, %eax
movd %eax, %xmm2
pshufd $1, %xmm0, %xmm3
movd %xmm3, %eax
pshufd $1, %xmm1, %xmm3
movd %xmm3, %ecx
shll %cl, %eax
movd %eax, %xmm3
punpckldq %xmm2, %xmm3
movd %xmm0, %eax
movd %xmm1, %ecx
shll %cl, %eax
movd %eax, %xmm2
movhlps %xmm0, %xmm0
movd %xmm0, %eax
movhlps %xmm1, %xmm1
movd %xmm1, %ecx
shll %cl, %eax
movd %eax, %xmm0
punpckldq %xmm0, %xmm2
movdqa %xmm2, %xmm0
punpckldq %xmm3, %xmm0
ret
llvm-svn: 109549
2010-07-27 22:37:06 +00:00
ef1ca24b91
recommit simplification (originally r109504, backed out in r109508) now that problem in CallSiteBase is fixed
...
llvm-svn: 109547
2010-07-27 22:02:00 +00:00
84a74779a1
It is FE's responsibility to emit proper directory name.
...
llvm-svn: 109538
2010-07-27 20:51:15 +00:00
7383cf06ba
Grammar
...
llvm-svn: 109525
2010-07-27 18:36:27 +00:00
317b969ac5
Fix a crash in the dag combiner caused by ConstantFoldBIT_CONVERTofBUILD_VECTOR calling itself
...
recursively and returning a SCALAR_TO_VECTOR node, but assuming the input was always a BUILD_VECTOR.
llvm-svn: 109519
2010-07-27 18:02:18 +00:00
2ff0e64bc3
80 column
...
llvm-svn: 109513
2010-07-27 17:38:47 +00:00
7639967e6c
fix typo
...
llvm-svn: 109511
2010-07-27 17:14:29 +00:00
f159085414
recommit simplification (r109502, backed out r109509); seems to innocent
...
llvm-svn: 109510
2010-07-27 16:44:23 +00:00
5f91b7cf3e
back out this too to restore the bots
...
llvm-svn: 109509
2010-07-27 15:56:07 +00:00
ed1d92cb9a
back out r109504, breaks the bots
...
llvm-svn: 109508
2010-07-27 15:18:11 +00:00
7b0a5fd2a5
simplify: CallSite::get --> CallSite constructor
...
llvm-svn: 109506
2010-07-27 15:02:37 +00:00
195a609c37
simplify
...
llvm-svn: 109504
2010-07-27 14:38:38 +00:00
d59498bc97
use ImmutableCallSite for const-corrgoodness
...
llvm-svn: 109503
2010-07-27 14:15:29 +00:00
7527b2ed5c
simplify
...
llvm-svn: 109502
2010-07-27 13:31:22 +00:00
ee68696c5f
Fix silent failure with no input files.
...
llvm-svn: 109500
2010-07-27 11:19:40 +00:00
d359cf2e44
Return -1 only on failure to execute a program.
...
Also fix some comments.
llvm-svn: 109499
2010-07-27 11:19:36 +00:00
fc763867d5
RegionInfo: Add getMaxRegionExit()
...
getMaxRegionExit returns the exit of the maximal refined region starting
at a specific basic block.
llvm-svn: 109496
2010-07-27 08:39:43 +00:00
fd5c8329cf
After updating value handles for RAUW, check that no weak or tracking handles
...
are still on the list. This might happen if a CallbackVH created some new value
handles for the old value when doing RAUW. Barf if it occurs, since it is almost
certainly a mistake.
llvm-svn: 109495
2010-07-27 06:53:14 +00:00
f8270bdb2d
Make MC use Windows COFF on Windows and add tests.
...
llvm-svn: 109494
2010-07-27 06:46:15 +00:00
1bec81a888
Add function to query RegionInfo about loops.
...
* contains(Loop), * getOutermostLoop()
* Improve getNameStr() to return a sensible name, if basic blocks are not named.
llvm-svn: 109490
2010-07-27 04:17:13 +00:00
96a890a7f8
The isLoadFromStackSlot and isStoreToStackSlot have no way of reporting
...
subregister operands like this:
%reg1040:sub_32bit<def> = MOV32rm <fi#-2>, 1, %reg0, 0, %reg0, %reg1040<imp-def>; mem:LD4[FixedStack-2](align=8)
Make them return false when subreg operands are present. VirtRegRewriter is
making bad assumptions otherwise.
This fixes PR7713.
llvm-svn: 109489
2010-07-27 04:17:01 +00:00
c3c05ed02e
Add assertions that expose the PR7713 miscompilation: Accessing a stack slot
...
with a too-big register class.
llvm-svn: 109488
2010-07-27 04:16:58 +00:00
0ff1ef650b
It's better to have the arrays, which would trigger the creation of stack
...
protectors, to be near the stack protectors on the stack. Accomplish this by
tagging the stack object with a predicate that indicates that it would trigger
this. In the prolog-epilog inserter, assign these objects to the stack after the
stack protector but before the other objects.
llvm-svn: 109481
2010-07-27 01:55:19 +00:00
c698417e52
Add SplitEditor to SplitKit. This class will be used to edit live intervals and
...
rewrite instructions for live range splitting.
Still work in progress.
llvm-svn: 109469
2010-07-26 23:44:11 +00:00
c2af77f510
Fix a use-after-free.
...
llvm-svn: 109468
2010-07-26 23:40:24 +00:00
fa60b0ee51
Using llvm.eh.catch.all.value instead of .llvm.eh.catch.all.value.
...
llvm-svn: 109462
2010-07-26 22:36:52 +00:00
f902befe8e
And a bit more non-ASCII stuff.
...
llvm-svn: 109458
2010-07-26 22:28:18 +00:00
1e0d76bfd1
Drop some non-ascii stuff
...
llvm-svn: 109456
2010-07-26 22:23:07 +00:00
f23a06c2e4
Don't call __register_frame from the JIT on systems that use setjmp/longjmp
...
exception handling. Also fix an extra underscore typo in one instance of
"__ARM_EABI__". Radar 8236264.
llvm-svn: 109451
2010-07-26 21:58:00 +00:00
d4218b8793
On x86, f32 / f64 nodes share the same registers as 128-bit vector values.
...
llvm-svn: 109450
2010-07-26 21:50:05 +00:00
e6d6c5dd11
The "excess register pressure" returned by HighRegPressure() is not accurate enough to factor into scheduling priority. Eliminate it and add early exits to speed up scheduling.
...
llvm-svn: 109449
2010-07-26 21:49:07 +00:00
b61a6f2742
Add a note
...
llvm-svn: 109448
2010-07-26 21:48:35 +00:00
36c2ea6c7a
Temporary hack to let codegen assert or generate poor code in case
...
we are using AVX and no AVX version of the desired intruction is present,
this is better for incremental dev (without fallbacks it's easier to spot
what's missing). Not sure this is the best hack thought (we can also disable
all HasSSE* predicates by dinamically marking them 'false' if AVX is present)
llvm-svn: 109434
2010-07-26 21:01:18 +00:00
aa7f66ba67
Add an initial implementation of LazyValueInfo updating for JumpThreading. Disabled for now.
...
llvm-svn: 109424
2010-07-26 18:48:03 +00:00
6bcea068db
Currently EH lowering code expects typeinfo to be global only.
...
This assumption is not satisfied due to global mergeing.
Workaround the issue by temporary disablinge mergeing of const globals.
Also, ignore LLVM "special" globals. This fixes PR7716
llvm-svn: 109423
2010-07-26 18:45:39 +00:00
23b05d1cf5
ARM fastisel isn't ready.
...
llvm-svn: 109421
2010-07-26 18:32:55 +00:00
cd83870faf
Fix SCEVExpander::visitAddRecExpr so that it remembers the induction variable
...
it inserted rather than using LoopInfo::getCanonicalInductionVariable to
rediscover it, since that doesn't work on non-canonical loops. This fixes
infinite recurrsion on such loops; PR7562.
llvm-svn: 109419
2010-07-26 18:28:14 +00:00
2810bacafb
Handle Values with no value in getCopyFromRegs.
...
llvm-svn: 109415
2010-07-26 18:15:41 +00:00
0141c13b22
Remove LCSSA's bogus dependence on LoopSimplify and LoopSimplify's bogus
...
dependence on DominanceFrontier. Instead, add an explicit DominanceFrontier
pass in StandardPasses.h to ensure that it gets scheduled at the right
time.
Declare that loop unrolling preserves ScalarEvolution, and shuffle some
getAnalysisUsages.
This eliminates one LoopSimplify and one LCCSA run in the standard
compile opts sequence.
llvm-svn: 109413
2010-07-26 18:11:16 +00:00
a7908ae369
Preserve ScalarEvolution in the loop unroller.
...
llvm-svn: 109412
2010-07-26 18:02:06 +00:00
accaca5604
Fix (at least) quadratic worst-case complexity in DominanceFrontier::splitBlock:
...
don't visit all blocks in the function, and don't iterate over the split blocks'
predecessor lists for each block visited.
Also, remove the special-case test for the entry block. Splitting the entry
block isn't common enough to make this worthwhile.
This fixes a major compile-time bottleneck which is exposed now that
LoopSimplify isn't being redundantly run both before and after
DominanceFrontier.
llvm-svn: 109408
2010-07-26 17:55:15 +00:00
30005444fe
Avoid copying and recopying a std::set.
...
llvm-svn: 109405
2010-07-26 17:45:33 +00:00
2307c4bb76
Exit a search loop when the search goal is found.
...
llvm-svn: 109404
2010-07-26 17:41:45 +00:00
45af0ad182
Fix formatting.
...
llvm-svn: 109403
2010-07-26 17:39:33 +00:00
f9da3c3b88
A block dominates itself, by definition.
...
llvm-svn: 109402
2010-07-26 17:38:15 +00:00
65b257c9d2
Use DominatorTree::properlyDominates instead of dominates with an
...
explicit inequality check.
llvm-svn: 109401
2010-07-26 17:37:36 +00:00
31f73ef210
A block dominates itself, by definition.
...
llvm-svn: 109400
2010-07-26 17:35:32 +00:00
b3aa6c7110
Use DominatorTree::properlyDominates instead of dominates with an
...
explicit inequality check.
llvm-svn: 109398
2010-07-26 17:34:05 +00:00
136a6f0dbb
Pacify gcc-4.5 which wrongly thinks that RExcess (passed as the Excess parameter)
...
may be used uninitialized in the callers of HighRegPressure.
llvm-svn: 109393
2010-07-26 07:54:17 +00:00
675b162512
Fix format-specifier warning
...
llvm-svn: 109391
2010-07-26 03:55:44 +00:00
c21293792e
MC: Fix whitespace error from last commit.
...
A Visual C++ extension that removes trailing new lines? Seriously?
llvm-svn: 109390
2010-07-26 03:01:28 +00:00
b5fc138547
MC: Add WinCOFFObjectWriter implementation.
...
Origonal Windows COFF implementation by Nathan Jedffords.
llvm-svn: 109389
2010-07-26 02:17:32 +00:00
2e3f20b9aa
Factored out a bit of common code to mark VNInfos for deletion.
...
llvm-svn: 109388
2010-07-26 01:49:41 +00:00
5aaf677a37
Reduce string trashing.
...
llvm-svn: 109386
2010-07-25 23:18:32 +00:00
8ae3ecad2b
Add comments.
...
llvm-svn: 109383
2010-07-25 18:59:43 +00:00
8f452bc291
Remove extraneous semicolon
...
llvm-svn: 109373
2010-07-25 17:34:42 +00:00
8fcfe7aa51
Unbreak CMake build
...
llvm-svn: 109372
2010-07-25 17:10:14 +00:00
280ce9984e
Fix crashes when scheduling a CopyToReg node -- getMachineOpcode asserts on
...
those. Radar 8231572.
llvm-svn: 109367
2010-07-25 05:34:27 +00:00
6cf5141824
Revert r109361; it's impossible to write a call with an argument with an
...
invalid type.
llvm-svn: 109365
2010-07-24 23:06:59 +00:00
9d9e4a83b5
Minor simplification.
...
llvm-svn: 109362
2010-07-24 23:00:59 +00:00
261c211089
Make the ll parser check that arguments have valid types.
...
llvm-svn: 109361
2010-07-24 23:00:26 +00:00
5f6112450f
PR7704: A function is not allowed to return a function; make sure to enforce
...
this consistently.
llvm-svn: 109360
2010-07-24 22:58:04 +00:00
19edda0323
Hook in GlobalMerge pass
...
llvm-svn: 109359
2010-07-24 21:52:08 +00:00
7bc0443f2b
Revert this because we can't clone cyclic MDNodes which are creating during a
...
build of llvm-gcc.
llvm-svn: 109355
2010-07-24 20:54:02 +00:00
3c8eb80d93
Add hook to insert late LLVM=>LLVM passes just before isel
...
llvm-svn: 109354
2010-07-24 20:48:54 +00:00
14b69d59dd
Whether function-local or not, a MDNode may reference a Function in which case
...
it needs to be mapped to refer to the function in the new module, not the old
one. Fixes PR7700.
llvm-svn: 109353
2010-07-24 19:43:25 +00:00
3bc93c2f2f
Clarify that if a new value handle is added while dropping value handles
...
hanging off a value, then the dropping code will intentionally not drop
it too (since this is almost certainly a bug).
llvm-svn: 109337
2010-07-24 12:09:22 +00:00
56c006561c
Change ScheduleDAGInstrs::Defs and ::Uses to be variable-size vectors
...
instead of fixed size arrays, so that increasing FirstVirtualRegister to 16K
won't cause a compile time performance regression.
llvm-svn: 109330
2010-07-24 06:01:53 +00:00
498877d055
Use current working directory when Dirname is empty. This only happens when absolute source file path is used on compiler command line.
...
llvm-svn: 109302
2010-07-24 00:53:22 +00:00
37b740c4bf
Add an ILP scheduler. This is a register pressure aware scheduler that's
...
appropriate for targets without detailed instruction iterineries.
The scheduler schedules for increased instruction level parallelism in
low register pressure situation; it schedules to reduce register pressure
when the register pressure becomes high.
On x86_64, this is a win for all tests in CFP2000. It also sped up 256.bzip2
by 16%.
llvm-svn: 109300
2010-07-24 00:39:05 +00:00
306a1f9721
Support x86 "eiz" and "riz" pseudo index registers in the assembler.
...
llvm-svn: 109295
2010-07-24 00:06:39 +00:00
0acbcb1a60
Use the appropriate register class for an i32 when adding ARM::LR to the
...
function live in set. This will give us tGPR for Thumb1 and GPR otherwise,
so the copy will be spillable. rdar://8224931
llvm-svn: 109293
2010-07-23 23:50:35 +00:00
ba4b1909ce
Remove too-strict assertion. We may want the vreg copy of the physical register
...
to be of a different register class. For example, in Thumb1 if the live-in is
a high register, we want the vreg to be a low register. rdar://8224931
llvm-svn: 109291
2010-07-23 23:48:02 +00:00
28499f76c9
Revert r109262.
...
llvm-svn: 109285
2010-07-23 23:04:41 +00:00
c17dd5790b
Revert 109076. It is wrong and was causing regressions. Add some
...
comments explaining why it was wrong. 8225024.
Fix the real problem in 8213383: the code that splits very large
blocks when no other place to put constants can be found was not
considering the case that the block contained a Thumb tablejump.
llvm-svn: 109282
2010-07-23 22:50:23 +00:00
df907f4594
- Allow target to specify when is register pressure "too high". In most cases,
...
it's too late to start backing off aggressive latency scheduling when most
of the registers are in use so the threshold should be a bit tighter.
- Correctly handle live out's and extract_subreg etc.
- Enable register pressure aware scheduling by default for hybrid scheduler.
For ARM, this is almost always a win on # of instructions. It's runtime
neutral for most of the tests. But for some kernels with high register
pressure it can be a huge win. e.g. 464.h264ref reduced number of spills by
54 and sped up by 20%.
llvm-svn: 109279
2010-07-23 22:39:59 +00:00
d65cd1d581
Remove trailing whitespace
...
llvm-svn: 109276
2010-07-23 22:15:26 +00:00
7038bd5c1a
Eliminate getCanonicalInductionVariableIncrement's last user and
...
eliminate it.
llvm-svn: 109270
2010-07-23 21:34:51 +00:00
acafc61023
Simplify this code; it can use the regular CFG utlities rather than
...
the BlockTraits abstractions.
llvm-svn: 109268
2010-07-23 21:25:16 +00:00
5ae3102459
Micro-optimize SCEVComplexityCompare.
...
llvm-svn: 109267
2010-07-23 21:20:52 +00:00
Daniel Dunbar