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Author SHA1 Message Date
Dan Gohman
33591af872 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109596 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 17:14:23 +00:00
Dan Gohman
67d0498d53 Do GEP offset calculations with unsigned math rather than signed math 
to avoid undefined behavior on overflow, noticed by John Regehr.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109594 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 17:11:36 +00:00
Dan Gohman
dc7a235363 Add some extra friend declarations to fix a gcc-4.0 compile error. 
This is a temporary fix, until more elaborate changes are ready.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109593 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 17:09:24 +00:00
Gabor Greif
f5e13095fa simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109589 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 15:52:43 +00:00
Daniel Dunbar
a309dac868 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109586 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 15:40:20 +00:00
Gabor Greif
5d4b32ef96 simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109585 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 15:31:37 +00:00
Dan Gohman
69b777b5c4 Update svn:ignore properties. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109584 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 15:17:26 +00:00
Gabor Greif
d09475c226 use Value* constructor of CallSite to create potentially improper site, and test that 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109581 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 14:28:18 +00:00
Gabor Greif
ce4a62639f use Value* constructor of CallSite to create potentially improper site, and test that 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109580 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 12:35:54 +00:00
Gabor Greif
3737984e95 use Value* constructor of CallSite to create potentially improper site 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109579 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 12:19:46 +00:00
Gabor Greif
30ae792f06 simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109578 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 10:57:28 +00:00
Gabor Greif
b0686ea808 simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109577 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 10:46:09 +00:00
Gabor Greif
756f0d2ab4 we are supposed to only create proper CallSites from an instruction (esp. CallInst and InvokeInst) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109576 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 10:44:59 +00:00
Eric Christopher
bc16827be6 Filter out patterns that have PredicateOperands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109572 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 01:52:23 +00:00
Dan Gohman
81f9121cda 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109570 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 01:09:07 +00:00
Dan Gohman
59846aced2 Make SCEVCallbackVH::allUsesReplacedWith unconditionally delete 
the old value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109567 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 00:28:25 +00:00
Nate Begeman
51409214d7 Implement a vectorized algorithm for <16 x i8> << <16 x i8> 
This is about 4x faster and smaller than the existing scalarization.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109566 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 00:21:48 +00:00
Dan Gohman
f374ba2bcd Add a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109565 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 00:21:18 +00:00
Owen Anderson
9a65dc9968 Rearrange several datastructures in LazyValueInfo to improve compile time. 
This is still not perfect, but better than it was before.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109563 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 23:58:11 +00:00
Owen Anderson
cf85c96129 Fill out the interface of DenseSet a bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109562 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 23:55:47 +00:00
Stuart Hastings
3c73a6b650 Testcase for r109556. Radar 8198362. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109557 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 23:15:25 +00:00
Gabor Greif
b344a346f1 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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109553 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 22:53:28 +00:00
Nate Begeman
bdcb5afb77 ~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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109549 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 22:37:06 +00:00
Gabor Greif
622b7cf147 recommit simplification (originally r109504, backed out in r109508) now that problem in CallSiteBase is fixed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109547 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 22:02:00 +00:00
Gabor Greif
a6758446b7 remove bogus assert, use static_cast for additional checking 
left two new asserts commented out, because they would fire in clang, have to hunt those down first

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109544 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 21:46:11 +00:00
Devang Patel
37032350c8 It is FE's responsibility to emit proper directory name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109538 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 20:51:15 +00:00
Chris Lattner
90f8795e1c make lookup failures not fatal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109530 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 18:59:50 +00:00
Jim Grosbach
977fa34df8 Grammar 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109525 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 18:36:27 +00:00
Devang Patel
8b5749da2a Update tests to not rely on input file's absolute path. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109521 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 18:13:53 +00:00
Nate Begeman
e0efc216eb 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109519 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 18:02:18 +00:00
Jim Grosbach
57cb4f8be1 80 column 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109513 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 17:38:47 +00:00
Jim Grosbach
ae64eedae2 fix typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109511 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 17:14:29 +00:00
Gabor Greif
a292b2f49f recommit simplification (r109502, backed out r109509); seems to innocent 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109510 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 16:44:23 +00:00
Gabor Greif
5b0c25313e back out this too to restore the bots 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109509 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 15:56:07 +00:00
Gabor Greif
49d0bca86c back out r109504, breaks the bots 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109508 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 15:18:11 +00:00
Gabor Greif
86099345db simplify: CallSite::get --> CallSite constructor 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109506 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 15:02:37 +00:00
Gabor Greif
c0d4aed6f7 simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109504 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 14:38:38 +00:00
Gabor Greif
0de11e0e66 use ImmutableCallSite for const-corrgoodness 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109503 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 14:15:29 +00:00
Gabor Greif
50da18171e simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109502 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 13:31:22 +00:00
Mikhail Glushenkov
b482f23c6b Fix silent failure with no input files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109500 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 11:19:40 +00:00
Mikhail Glushenkov
67d985ffb2 Return -1 only on failure to execute a program. 
Also fix some comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109499 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 11:19:36 +00:00
Duncan Sands
978bb87f88 In commit 91421, isPod was changed from false to true for these value handles. 
Change it back again: destructors and constructors need to be run.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109498 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 09:09:05 +00:00
Tobias Grosser
56029271f9 Make coff-dump.py executable and add python as executable for this script. 
This fixes the MC/COFF/basic-coff.ll test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109497 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 09:01:26 +00:00
Tobias Grosser
0e6fcf4be3 RegionInfo: Add getMaxRegionExit() 
getMaxRegionExit returns the exit of the maximal refined region starting
at a specific basic block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109496 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 08:39:43 +00:00
Duncan Sands
2c11046fa1 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109495 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 06:53:14 +00:00
Michael J. Spencer
dfd30187c6 Make MC use Windows COFF on Windows and add tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109494 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 06:46:15 +00:00
Tobias Grosser
082d587d35 Add function to query RegionInfo about loops. 
* contains(Loop), * getOutermostLoop()
* Improve getNameStr() to return a sensible name, if basic blocks are not named.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109490 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 04:17:13 +00:00
Jakob Stoklund Olesen
81c7b19f04 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109489 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 04:17:01 +00:00
Jakob Stoklund Olesen
516cd4575e Add assertions that expose the PR7713 miscompilation: Accessing a stack slot 
with a too-big register class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109488 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 04:16:58 +00:00
Bill Wendling
dfc2c51d12 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109481 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 01:55:19 +00:00