Dan Gohman
9018e836fe
For now, abort when an ISD::VAARG is encountered on x86-64, rather
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than silently generate invalid code.
llvm-gcc does not currently use VAArgInst; it lowers va_arg in the
front-end.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50930 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-10 01:26:14 +00:00
Evan Cheng
b70ea0bd03
Some clean up.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50929 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-10 00:59:18 +00:00
Evan Cheng
25210da757
If movl top bits are undef, let it be selected to movlps, etc.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50928 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-10 00:58:41 +00:00
Evan Cheng
b3e0a6d75c
If all sources of a PHI node are defined by an implicit_def, just emit an implicit_def instead of a copy.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50927 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-10 00:17:50 +00:00
Bill Wendling
637980edce
Cosmetic changes:
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- Comment fixes.
- Moar whitespace.
- Made ivars "private" by default.
No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50926 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-10 00:12:52 +00:00
Evan Cheng
23573e5be6
Add a pattern to do move the low element of a v4f32 and zero extend the rest.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50922 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-09 23:37:55 +00:00
Dale Johannesen
6b8583cbf1
Remove an evil vector bool. Cosmetic refactoring,
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no functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50921 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-09 23:28:24 +00:00
Evan Cheng
d880b97257
Handle a few more cases of folding load i64 into xmm and zero top bits.
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Note, some of the code will be moved into target independent part of DAG combiner in a subsequent patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50918 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-09 21:53:03 +00:00
Dale Johannesen
6ae83faadf
Rewrite tail merging algorithm to handle the
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case where there are multiple blocks with a large
number of common tail instructions more efficiently
(compile time optimization).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50916 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-09 21:24:35 +00:00
Torok Edwin
f03893acf0
put LibCallAliasAnalysis into anonymous namespace to avoid
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clashes on ::X
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50912 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-09 20:35:45 +00:00
Chris Lattner
bfc538c09e
don't sink invokes, even if they are readonly. This fixes a
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crash on kimwitu++.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50901 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-09 15:07:33 +00:00
Duncan Sands
33af59d0f0
Fix a type and formatting.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50900 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-09 12:20:10 +00:00
Chris Lattner
7d2cbd2d43
Implement PR2298. This transforms:
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~x < ~y --> y < x
-x == -y --> x == y
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50882 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-09 05:19:28 +00:00
Chris Lattner
94019f8e06
restore doxygen comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50881 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-09 04:43:13 +00:00
Anton Korobeynikov
018f771398
Check for validity of aliasee pointer before dereference.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50878 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-08 23:11:06 +00:00
Evan Cheng
fd17f42bab
Use movq to move low half of XMM register and zero-extend the rest.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50874 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-08 22:35:02 +00:00
Chris Lattner
748118d8aa
conservatively say that volatile stores read memory.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50872 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-08 21:58:49 +00:00
Chris Lattner
38818b072f
store can't read from memory.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50869 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-08 21:47:43 +00:00
Chris Lattner
76e2e4a2bc
Remove dead return. Thanks to Bill for the review!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50863 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-08 18:26:56 +00:00
Gordon Henriksen
a8a118b68f
Improve pass documentation and comments.
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Patch by Matthijs Kooijman!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50861 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-08 17:46:35 +00:00
Chris Lattner
2539e33893
More than just loads can read from memory: readonly calls like strlen
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also need to be checked for memory modifying instructions before we
can sink them. THis fixes the second half of PR2297.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50860 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-08 17:37:37 +00:00
Chris Lattner
0ef546e639
Make instcombine's DSE respect loads as well as stores. It is not safe to
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delete the first store in:
store x -> p
load p
store y -> p
This is for PR2297.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50859 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-08 17:20:30 +00:00
Chris Lattner
d96288a2ff
add a new Instruction::mayReadFromMemory predicate, make
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Instruction::mayWriteToMemory stronger for invokes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50858 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-08 17:16:51 +00:00
Devang Patel
d7266d484a
Check linkage.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50851 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-08 15:08:39 +00:00
Duncan Sands
43b30a8287
Get exception handling working again on 64 bit
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Darwin. This is a hack of course, but it does
at least look at the right thing: gotpcrel means
that this is already an offset, so an explicit
offset is not needed (and wrong). I think this
is good enough for the moment: Anton is working
on something better.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50850 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-08 12:33:11 +00:00
Chris Lattner
268e7d7a94
Add support for constant folding the 'offsetof' pattern even if the
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base is not zero. This fixes test/C++Frontend/2008-05-07-CrazyOffsetOf.cpp
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50840 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-08 04:54:43 +00:00
Evan Cheng
7e2ff77ef0
Handle vector move / load which zero the destination register top bits (i.e. movd, movq, movss (addr), movsd (addr)) with X86 specific dag combine.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50838 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-08 00:57:18 +00:00
Anton Korobeynikov
0b12ecf6ff
Turn StripPointerCast() into a method
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50836 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-07 22:54:15 +00:00
Chris Lattner
029840c935
Add a new LibCallAliasAnalysis pass, which is parameterized
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by an instance of LibCallInfo to provide mod/ref info of
standard library functions. This is powerful enough to
say that 'sqrt' is readonly except that it modifies errno,
or that "printf doesn't store to memory unless the %n
constraint is present" etc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50827 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-07 19:53:05 +00:00
Duncan Sands
671fa97a4b
Output correct exception handling and frame info
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on x86-64 linux. This causes no regressions on
32 bit linux and 32 bit ppc. More tests pass
on 64 bit ppc with no regressions. I didn't
turn on eh on 64 bit linux because the intrinsics
needed to compile the eh runtime aren't done
yet. But if you turn it on and link with the
mainline runtime then eh seems to work fine
on x86-64 linux with this patch. Thanks to
Dale for testing. The main point of the patch
is that if you output that some object is
encoded using 4 bytes you had better not output
8 bytes for it: the patch makes everything
consistent.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50825 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-07 19:11:09 +00:00
Chris Lattner
14852f27e7
Add a new interface for describing the behavior of library calls. This
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Currently is sufficient to describe mod/ref behavior but will hopefully
eventually be extended for other purposes.
This isn't used by anything yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50820 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-07 18:21:13 +00:00
Evan Cheng
7ebc06bfd8
Yet another nasty spiller bug.
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%ecx = op
store %cl<kill>, (addr)
(addr) = op %al
It's not safe to unfold the last operand and eliminate store even though %cl is marked kill. It's a sub-register use which means one of its super-register(s) may be used below.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50794 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-07 00:49:28 +00:00
Dan Gohman
42ac929ed9
Fix a bug in the ComputeMaskedBits logic for multiply.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50793 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-07 00:35:55 +00:00
Anton Korobeynikov
149a315369
If weak GlobalVariable was bitcast'ed to different type during linking
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we will need to strip all casts for intializer lookup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50776 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-06 22:52:54 +00:00
Anton Korobeynikov
b04adddd50
Make StripPointerCast a common function (should we mak it method of Value instead?)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50775 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-06 22:52:30 +00:00
Owen Anderson
8b23bb792e
We need to update PHIs containing the exiting block, not the exit block. We really should come up with better names for these.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50770 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-06 20:55:16 +00:00
Devang Patel
d1e50edf5a
Fix typo.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50713 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-06 05:40:11 +00:00
Nick Lewycky
08de613d2d
Fix typo and indentation.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50706 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-06 04:03:18 +00:00
Nick Lewycky
5c632e904c
Fix renamePathOnDisk on Win32, patch from David Leon. This fixes problems with
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llvm-ar being unable to rename files.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50702 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-06 03:42:21 +00:00
Chris Lattner
9b34849a6b
fix typo Duncan noticed
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50699 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-06 02:31:18 +00:00
Chris Lattner
3bf6accfea
Match things like 'armv5tejl-unknown-linux-gnu' for PR2290
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50698 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-06 02:29:28 +00:00
Dan Gohman
4a3f6c8882
Make several variable declarations static.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50696 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-06 01:53:16 +00:00
Dan Gohman
84b7df43fb
Remove uses of llvm/System/IncludeFile.h that are no longer needed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50695 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-06 01:32:53 +00:00
Dan Gohman
54eed37131
Instead of enumerating each opcode that isn't handled that
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ComputeMaskedBits handles, just use a 'default:'. This avoids
TargetLowering's list getting out of date with SelectionDAG's.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50693 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-06 00:53:29 +00:00
Dan Gohman
23e1df8b8d
Correct the value of LowBits in srem and urem handling in
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ComputeMaskedBits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50692 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-06 00:51:48 +00:00
Dan Gohman
703bfe6909
Fix a broken doxygen comment, and reword it for clarity.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50687 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-06 00:20:10 +00:00
Chris Lattner
88c1baa50c
add a micro optzn.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50681 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-05 23:19:45 +00:00
Mon P Wang
ab3e747c64
Improved generated code for atomic operators
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50677 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-05 22:56:23 +00:00
Evan Cheng
71f489d728
Code clean up. No functionality change.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50675 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-05 22:12:23 +00:00
Bill Wendling
ac17822206
Fix: Some classes were derived from a class in an anonymous namespace, but they
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themselves weren't in the anonymous namespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50673 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-05 21:37:59 +00:00