Chris Lattner
f9f3cb1845
some notes from Anton
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83777 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 18:21:32 +00:00
Gabor Greif
3baca51cca
catch some other serial commas that my earlier grep did not spot
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83772 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 11:44:34 +00:00
Gabor Greif
56e164f4e0
eliminate some instances of serial comma. sabre, if you feel strong about this, feel free to revert this rev
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83771 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 11:23:40 +00:00
Duncan Sands
deb3f2ec23
Fix typo.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83770 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 11:20:26 +00:00
Gabor Greif
f553cbc5e9
apply some tweaks
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83769 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 10:44:44 +00:00
Gabor Greif
3883cba793
fix some obvious typos
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83768 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 10:27:57 +00:00
Duncan Sands
b88517c5e3
Add an outline of the DragonEgg gcc plugin.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83765 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 09:07:15 +00:00
Chris Lattner
8af304ab3b
implement rdar://7293527, a trivial instcombine that llvm-gcc
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gets but clang doesn't, because it is implemented in GCC's
fold routine.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83761 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 07:53:15 +00:00
Chris Lattner
f7a60d28a1
add a helper for matching "1".
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83760 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 07:51:25 +00:00
Chris Lattner
78c552ef30
implement a transformation in jump threading that is currently
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done by condprop, but do it in a much more general form. The
basic idea is that we can do a limited form of tail duplication
in the case when we have a branch on a phi. Moving the branch
up in to the predecessor block makes instruction selection
much easier and encourages chained jump threadings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83759 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 07:24:57 +00:00
Chris Lattner
113e4c6070
another testcase jump threading shouldn't crash on.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83758 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 07:11:11 +00:00
Chris Lattner
c6c167f3bf
rename a file, remove a poorly reduced testcase.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83757 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 07:10:28 +00:00
Chris Lattner
6b65f47ad5
restructure some code, no functionality change.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83756 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 04:40:21 +00:00
Chris Lattner
bdbf1a177d
factor some code better and move a function, no functionality change.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83755 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 04:33:43 +00:00
Chris Lattner
e33583b7c2
make jump threading on a phi with undef inputs happen.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83754 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 04:18:15 +00:00
Chris Lattner
1bd8d0a00b
there is no need to run mem2reg after jump threading at LTO time now.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83753 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 04:17:33 +00:00
Chris Lattner
2c5060dbde
fix a bunch of bad formatting, delete the dead
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ConstantInt::TheTrueVal/TheFalseVal members.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83752 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 04:03:22 +00:00
Chris Lattner
41fb43bb1e
merge two tests.
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2009-10-11 03:55:30 +00:00
Chris Lattner
d98eb44dde
simplify some run lines, convert a test to filecheck.
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2009-10-11 03:54:21 +00:00
Ted Kremenek
2840c18cf5
Update release notes blurb on the static analyzer.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83749 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 03:10:25 +00:00
Chris Lattner
8c1db67a4c
rewrite LCSSA to use SSAUpdate, to only return true if it modifies
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the IR, and to implement the FIXME'd optimization.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83748 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-11 02:53:37 +00:00
Chris Lattner
39b0c3d613
clean up and simplify some code. Don't use setvector when things will be
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inserted only once, just use vector. Don't compute ExitBlocks unless we
need it, change std::sort to array_pod_sort.
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2009-10-11 01:07:15 +00:00
Chris Lattner
a09fbf0af0
switch GVN to use SSAUpdater. Besides removing a lot of complexity
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from GVN, this also speeds it up, inserts fewer PHI nodes (see the
testcase) and allows it to remove more loads (due to fewer PHI nodes
standing in the way).
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2009-10-10 23:50:30 +00:00
Chris Lattner
0bef562ea2
add a simple helper method.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83745 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 23:41:48 +00:00
Chris Lattner
f5a1fb6b24
add ability for clients of SSAUpdater to find out about the
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PHI nodes inserted.
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2009-10-10 23:15:24 +00:00
Chris Lattner
aa6aeb91b4
clarify
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2009-10-10 23:05:42 +00:00
Chris Lattner
813dbd5912
remove dead code
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83742 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 23:04:12 +00:00
Chris Lattner
1a8d4de397
add the ability to get a rewritten value from the middle of a block,
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not just at the end. Add a big comment explaining when this could
be useful (which never happens for jump threading).
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2009-10-10 23:00:11 +00:00
Chris Lattner
5fb107287f
rename GetValueInBlock -> GetValueAtEndOfBlock to better reflect
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what it does.
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2009-10-10 22:41:58 +00:00
Anton Korobeynikov
8f8e9f0830
It seems that OR operation does not affect status reg at all.
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Remove impdef of SRW. This fixes PR4779
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2009-10-10 22:17:47 +00:00
Chris Lattner
558c36729f
fix broken link
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2009-10-10 22:15:25 +00:00
Chris Lattner
f0390dfbc4
final changes.
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2009-10-10 22:13:38 +00:00
Chris Lattner
220b9eecf5
down to 'major changes'
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83736 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 22:02:58 +00:00
Chris Lattner
85c70786f2
more updates
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2009-10-10 21:40:13 +00:00
Chris Lattner
9b96e80da4
add a link to the GSG for info on how to check out svn trunk
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2009-10-10 21:37:16 +00:00
Chris Lattner
b91227dc6c
x86 uses 5 operands for most memory refs now.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83733 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 21:30:55 +00:00
Duncan Sands
2eff6e74be
More spelling and grammar tweaks.
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2009-10-10 20:06:04 +00:00
Benjamin Kramer
9ddfb948e8
More spelling fixes.
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2009-10-10 19:45:13 +00:00
Duncan Sands
65b0e39acf
Spelling fixes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83722 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 19:30:16 +00:00
Chris Lattner
f435c4139e
more tweaks
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2009-10-10 19:26:21 +00:00
Duncan Sands
a637737e49
Remove an inappropriate line in the description of the
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clang static analyser. Decrease duplication in the text.
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2009-10-10 19:16:25 +00:00
Chris Lattner
cfb92fe54e
continue decoding chris scribble.
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2009-10-10 19:00:55 +00:00
Chris Lattner
60f034097e
remove some dead passes
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2009-10-10 18:40:48 +00:00
Chris Lattner
39c0e67a89
checkpoint.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83716 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 18:33:13 +00:00
Chris Lattner
5a2d87541f
fix broken anchors.
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2009-10-10 18:26:06 +00:00
Chris Lattner
f9920fabac
use a typedef instead of spelling out an insane type. Yay for auto someday.
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2009-10-10 09:09:20 +00:00
Chris Lattner
433a0dbb26
Change jump threading to use the new SSAUpdater class instead of
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DemoteRegToStack. This makes it more efficient (because it isn't
creating a ton of load/stores that are eventually removed by a later
mem2reg), and more slightly more effective (because those load/stores
don't get in the way of threading).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83706 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 09:05:58 +00:00
Chris Lattner
93f3bcf7f3
Implement an efficient and fully general SSA update mechanism that
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works on unstructured CFGs. This implements PR217, our oldest open PR.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83705 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 09:04:27 +00:00
Chris Lattner
f6811274e1
add some WeakVH::operator='s. Without these, assigning
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a Value* to a WeakVH was constructing a temporary WeakVH
(due to the implicit assignment operator). This avoids
that cost.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83704 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 08:27:29 +00:00
Chris Lattner
fc61aeff2c
change some static_cast into cast, pointed out by Gabor.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83703 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 08:01:27 +00:00