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e336cbc450
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6898 Commits

Author SHA1 Message Date
Dan Gohman
e336cbc450 Fix a typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108962 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 23:10:36 +00:00
Dan Gohman
7bc230ec6a Don't look up the "dbg" metadata kind by name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108961 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 23:09:34 +00:00
Dan Gohman
bda0252639 Use getDebugLoc and setDebugLoc instead of getDbgMetadata and setDbgMetadata, 
avoiding MDNode overhead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108909 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 20:09:07 +00:00
Dan Gohman
43ef3fbae1 Remember that the induction variable is always a PHINode and 
use getIncomingValueForBlock instead of
LoopInfo::getCanonicalInductionVariableIncrement.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108865 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 17:18:52 +00:00
Owen Anderson
5f23a938b0 Tweak per Chris' comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108736 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-19 19:23:32 +00:00
Owen Anderson
d90290127b Reimplement r108639 in InstCombine rather than DAGCombine. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108687 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-19 08:09:34 +00:00
Owen Anderson
7e3012c345 Another attempt at getting the clang self-host to like my instcombine patch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108614 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-17 06:56:35 +00:00
Chris Lattner
49669e6d3a eliminate unlockedRefineAbstractTypeTo, types are all per-llvmcontext, 
so there is no locking involved in type refinement.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108553 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-16 20:50:13 +00:00
Dan Gohman
1e381fcd55 Reorder the contents of various getAnalysisUsage functions, eliminating 
a redundant loopsimplify run from the default -O2 sequence.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108539 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-16 17:58:45 +00:00
Owen Anderson
835d425a16 Remove the rest of my instcombine changes. Back to the drawing board on this one. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108530 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-16 16:39:00 +00:00
Gabor Greif
a6aac4c5bc eliminate CallInst::ArgOffset 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108522 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-16 09:38:02 +00:00
Nick Lewycky
394ce41b7f Arrays and vectors with different numbers of elements are not equivalent. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108517 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-16 06:31:12 +00:00
Eric Christopher
de309a8b52 Also revert 108422, it's causing some test failures. 
Working on testcases for Owen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108494 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-16 01:36:12 +00:00
Dan Gohman
a9db129730 Don't merge uses when they are targetting fixup sites with 
different widths. In a use with a narrower fixup, formulae
may be wider than the fixup, in which case the high bits
aren't necessarily meaningful, so it isn't safe to reuse
them for uses with wider fixups.

This fixes PR7618, though the testcase is too large for a
reasonable regression test, since it heavily dependes on
hitting LSR's heuristics in a certain way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108455 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 20:24:58 +00:00
Dan Gohman
ef4308d6ba Use dbgs() instead of errs() in a DEBUG. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108453 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 20:12:42 +00:00
Owen Anderson
11acba0470 Speculatively revert r108429 to fix the clang self-host. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108436 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 18:18:57 +00:00
Owen Anderson
40bf5e7a68 Per Chris' suggestion, get rid of the select canonicalization and just add 
the corresponding or-icmp-and pattern.  This has the added benefit of doing
the matching earlier, and thus being less susceptible to being confused by
earlier transforms.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108429 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 17:24:23 +00:00
Owen Anderson
2722dfa75d Remove unneeded check, and correct style. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108427 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 16:38:22 +00:00
Dan Gohman
c88c1a4581 Watch out for a constant offset cancelling out a base register, forming 
a zero. This situation arrises in Fortran code with induction variables
that start at 1 instead of 0. This fixes PR7651.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108424 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 15:14:45 +00:00
Owen Anderson
96fe621e07 Reapply r108378, with bugfixes, testcase, and improved comment formatting. 
This now passes LIT, nighty test, and llvm-gcc bootstrap on my machine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108422 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 15:00:23 +00:00
Nick Lewycky
706f50820c This is a full sentence. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108418 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 06:51:22 +00:00
Nick Lewycky
664040a03c Disable aliases on all platforms. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108417 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 06:48:56 +00:00
Chris Lattner
35a939b97d make various clients of ReplaceAndSimplifyAllUses tolerate 
it *changing* the things it replaces, not just causing them
to drop to null.  There is no functionality change yet, but 
this is required for a subsequent patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108414 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 06:06:04 +00:00
Eli Friedman
5e84e8e52a Speculatively revert r108378; may be causing bootstrap failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108389 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 00:33:00 +00:00
Owen Anderson
bd129a7460 Add instcombine transforms to optimize tests of multiple bits of the same value into a single larger comparison. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108378 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-14 23:33:51 +00:00
Owen Anderson
e84178a0bd Extend SimplifyCFG's common-destination folding heuristic to allow a single 
"bonus" instruction to be speculatively executed.  Add a heuristic to
ensure we're not tripping up out-of-order execution by checking that this bonus
instruction only uses values that were already guaranteed to be available.

This allows us to eliminate the short circuit in (x&1)&&(x&2).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108351 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-14 19:52:16 +00:00
Chris Lattner
07c9b64719 revert r108320, I see the failures now... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108322 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-14 06:16:35 +00:00
Chris Lattner
7e185af930 reapply benjamin's instcombine patch, I don't see anything wrong with it and can't repro any problems with a manual self-host. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108320 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-14 05:59:13 +00:00
Eric Christopher
f0193ed8de Grammar. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108252 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-13 18:27:13 +00:00
Duncan Sands
d0d3ccc827 Handle the case of a tail recursion in which the tail call is followed 
by a return that returns a constant, while elsewhere in the function
another return instruction returns a different constant.  This is a
special case of accumulator recursion, so just generalize the existing
logic a bit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108241 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-13 15:41:41 +00:00
Benjamin Kramer
c9fe6374b7 Nope, still breaks the release selfhost bots :( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108153 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 16:38:48 +00:00
Benjamin Kramer
8fd437c43f Reapply the "or" half of r108136, which seems to be less problematic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108152 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 16:15:48 +00:00
Gabor Greif
a9b8338bfa cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108150 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 15:48:26 +00:00
Benjamin Kramer
e2d07b5208 Revert r108141 again, sigh. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108148 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 14:42:04 +00:00
Gabor Greif
40119ceeec cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108147 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 14:15:58 +00:00
Gabor Greif
a53029b1fc cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108146 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 14:15:10 +00:00
Gabor Greif
65b9212d34 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108145 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 14:14:03 +00:00
Gabor Greif
aaaaa02a93 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108144 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 14:13:15 +00:00
Gabor Greif
b7df500063 cache results of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108143 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 14:12:11 +00:00
Gabor Greif
ee1f44fba3 cache results of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108142 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 14:10:24 +00:00
Benjamin Kramer
98a8206e58 Reapply 108136 with an ugly pasto fixed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108141 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 13:44:00 +00:00
Benjamin Kramer
ad854f0764 Move optimization to avoid redundant matching. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108140 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 13:34:22 +00:00
Benjamin Kramer
0cc4ed1ca5 Revert r108136 until I figure out why it broke selfhost. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108139 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 12:35:49 +00:00
Gabor Greif
110b75aa75 cache dereferenced iterators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108138 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 12:03:02 +00:00
Gabor Greif
639e9e47a2 recommit r108131 (hich has been backed out in r108135) with a fix 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108137 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 12:02:10 +00:00
Benjamin Kramer
4fc719e607 instcombine: fold (x & y) | (~x & z) and (x & y) ^ (~x & z) into ((y ^ z) & x) ^ z which is one instruction shorter. (PR6773) 
before:
  %and = and i32 %y, %x
  %neg = xor i32 %x, -1
  %and4 = and i32 %z, %neg
  %xor = xor i32 %and4, %and

after:
  %xor1 = xor i32 %z, %y
  %and2 = and i32 %xor1, %x
  %xor = xor i32 %and2, %z


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108136 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 11:54:45 +00:00
Gabor Greif
e99e077522 back out r108131 (of TailDuplication.cpp) for now, it causes a buildbot failure 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108135 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 11:32:39 +00:00
Gabor Greif
fc41f90817 cache dereferenced iterators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108134 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 11:19:24 +00:00
Gabor Greif
625398343e cache dereferenced iterators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108133 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 10:59:23 +00:00
Gabor Greif
f1b2874c68 cache dereferenced iterators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108132 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 10:49:54 +00:00