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40299 Commits

Author SHA1 Message Date
Dan Gohman
9a6ea54d94 Make SCEVCallbackVH::allUsesReplacedWith unconditionally delete 
the old value.

llvm-svn: 109567
 2010-07-28 00:28:25 +00:00
Nate Begeman
133820e806 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
Owen Anderson
2d39891e91 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
Gabor Greif
ec0c7b2427 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
Nate Begeman
068e932975 ~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
Gabor Greif
8c197e5dbb 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
Devang Patel
38a7221118 It is FE's responsibility to emit proper directory name. 
llvm-svn: 109538
 2010-07-27 20:51:15 +00:00
Jim Grosbach
2f4adcee5f Grammar 
llvm-svn: 109525
 2010-07-27 18:36:27 +00:00
Nate Begeman
15fe179ecb 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
Jim Grosbach
4d81e796cb 80 column 
llvm-svn: 109513
 2010-07-27 17:38:47 +00:00
Jim Grosbach
7e561eb81c fix typo 
llvm-svn: 109511
 2010-07-27 17:14:29 +00:00
Gabor Greif
2778a21978 recommit simplification (r109502, backed out r109509); seems to innocent 
llvm-svn: 109510
 2010-07-27 16:44:23 +00:00
Gabor Greif
c95e84ab61 back out this too to restore the bots 
llvm-svn: 109509
 2010-07-27 15:56:07 +00:00
Gabor Greif
981f3d3a31 back out r109504, breaks the bots 
llvm-svn: 109508
 2010-07-27 15:18:11 +00:00
Gabor Greif
394841cea8 simplify: CallSite::get --> CallSite constructor 
llvm-svn: 109506
 2010-07-27 15:02:37 +00:00
Gabor Greif
90a627cfaa simplify 
llvm-svn: 109504
 2010-07-27 14:38:38 +00:00
Gabor Greif
aaf68e2e5a use ImmutableCallSite for const-corrgoodness 
llvm-svn: 109503
 2010-07-27 14:15:29 +00:00
Gabor Greif
ee90e05139 simplify 
llvm-svn: 109502
 2010-07-27 13:31:22 +00:00
Mikhail Glushenkov
61338a536b Fix silent failure with no input files. 
llvm-svn: 109500
 2010-07-27 11:19:40 +00:00
Mikhail Glushenkov
33c561c22c Return -1 only on failure to execute a program. 
Also fix some comments.

llvm-svn: 109499
 2010-07-27 11:19:36 +00:00
Tobias Grosser
ebc6c0cf50 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
Duncan Sands
816457c7f3 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
Michael J. Spencer
33ac353ce4 Make MC use Windows COFF on Windows and add tests. 
llvm-svn: 109494
 2010-07-27 06:46:15 +00:00
Tobias Grosser
16789d79fe 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
Jakob Stoklund Olesen
b056152ccf 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
Jakob Stoklund Olesen
fa4bcde9d9 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
Bill Wendling
bb2398331b 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
Jakob Stoklund Olesen
2b379c4339 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
Dan Gohman
64157c1919 Fix a use-after-free. 
llvm-svn: 109468
 2010-07-26 23:40:24 +00:00
Bill Wendling
efed27734e Using llvm.eh.catch.all.value instead of .llvm.eh.catch.all.value. 
llvm-svn: 109462
 2010-07-26 22:36:52 +00:00
Eli Friedman
94c9f00dd6 And a bit more non-ASCII stuff. 
llvm-svn: 109458
 2010-07-26 22:28:18 +00:00
Anton Korobeynikov
b71ee4ebbb Drop some non-ascii stuff 
llvm-svn: 109456
 2010-07-26 22:23:07 +00:00
Bob Wilson
73936af25b 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
Evan Cheng
4cee8136a7 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
Evan Cheng
e5f7eaf10c 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
Anton Korobeynikov
5e1e95aed9 Add a note 
llvm-svn: 109448
 2010-07-26 21:48:35 +00:00
Bruno Cardoso Lopes
cb0f921ca4 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
Owen Anderson
12ab6162bf Add an initial implementation of LazyValueInfo updating for JumpThreading. Disabled for now. 
llvm-svn: 109424
 2010-07-26 18:48:03 +00:00
Anton Korobeynikov
5e3d50ec58 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
Evan Cheng
1566171daa ARM fastisel isn't ready. 
llvm-svn: 109421
 2010-07-26 18:32:55 +00:00
Dan Gohman
9e0ae022d2 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
Dan Gohman
52e662a7f7 Handle Values with no value in getCopyFromRegs. 
llvm-svn: 109415
 2010-07-26 18:15:41 +00:00
Dan Gohman
23a6a1bdc5 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
Dan Gohman
7d588b7dec Preserve ScalarEvolution in the loop unroller. 
llvm-svn: 109412
 2010-07-26 18:02:06 +00:00
Dan Gohman
e191a19b69 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
Dan Gohman
c90f474e23 Avoid copying and recopying a std::set. 
llvm-svn: 109405
 2010-07-26 17:45:33 +00:00
Dan Gohman
8babd895c7 Exit a search loop when the search goal is found. 
llvm-svn: 109404
 2010-07-26 17:41:45 +00:00
Dan Gohman
014eec6389 Fix formatting. 
llvm-svn: 109403
 2010-07-26 17:39:33 +00:00
Dan Gohman
8f7e88352a A block dominates itself, by definition. 
llvm-svn: 109402
 2010-07-26 17:38:15 +00:00
Dan Gohman
32010a6c96 Use DominatorTree::properlyDominates instead of dominates with an 
explicit inequality check.

llvm-svn: 109401
 2010-07-26 17:37:36 +00:00