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205 Commits

Author SHA1 Message Date
Chris Lattner
5ae21fb23a rename *.llx -> *.ll, last batch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49971 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 22:32:52 +00:00
Owen Anderson
241f65321e Make GVN able to remove unnecessary calls to read-only functions again. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49842 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-17 05:36:50 +00:00
Dale Johannesen
21d31a8d94 Don't assume a tail call can't reference a byval 
argument to the outer function, this isn't correct.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49731 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-15 17:41:34 +00:00
Owen Anderson
fa0e66471f The functionality being tested was removed because it was horribly unsafe. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49610 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-13 09:51:06 +00:00
Duncan Sands
f02a8070eb Testcase for pr2169. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49344 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-07 17:03:16 +00:00
Duncan Sands
4c88cc9c2a Testcase for PR2160. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48655 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-21 20:22:11 +00:00
Daniel Berlin
d3bf1aef3f Fix PR 2160 by making sure arguments to external functions get marked as pointing to anything 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48509 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-18 22:22:53 +00:00
Gabor Greif
c0734e3c99 Fix http://llvm.org/bugs/show_bug.cgi?id=2104 by ordering lexicographically what gets printed. Be const-correct in PrintResults and uninline it too 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47712 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-28 08:38:45 +00:00
Evan Cheng
b9a905781e Temporarily reverting 46959. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47542 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-25 03:57:32 +00:00
Nick Lewycky
3e63076980 Add 'umax' similar to 'smax' SCEV. Closes PR2003. 
Parse reversed smax and umax as smin and umin and express them with negative
or binary-not SCEVs (which are really just subtract under the hood).

Parse 'xor %x, -1' as (-1 - %x).

Remove dead code (ConstantInt::get always returns a ConstantInt).

Don't use getIntegerSCEV(-1, Ty). The first value is an int, then it gets
passed into a uint64_t. Instead, create the -1 directly from
ConstantInt::getAllOnesValue().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47360 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-20 06:48:22 +00:00
Tanya Lattner
dcd188d33f Remove llvm-upgrade. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47110 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-14 06:56:27 +00:00
Wojciech Matyjewicz
52f321f525 Now that ScalarEvolution::print writes to the correct stream, there is 
no need to redirect stderr into stdout.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47009 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 15:12:40 +00:00
Wojciech Matyjewicz
2a9054cfd6 Change negative grep into positive one in my yesterday's testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47008 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 15:10:35 +00:00
Wojciech Matyjewicz
7b5b76835a Fix PR2002. Suppose n is the initial value for the induction 
variable (with step 1) and m is its final value. Then, the correct trip 
count is SMAX(m,n)-n. Previously, we used SMAX(0,m-n), but m-n may 
overflow and can't in general be interpreted as signed.

Patch by Nick Lewycky.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47007 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 15:09:36 +00:00
Wojciech Matyjewicz
a089b10421 If the LHS of the comparison is a loop-invariant we also want to move it 
to the RHS. This simple change allows to compute loop iteration count 
for loops with condition similar to the one in the testcase (which seems 
to be quite common).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46959 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 18:37:34 +00:00
Wojciech Matyjewicz
e3320a1bcc Fix PR1798 - an error in the evaluation of SCEVAddRecExpr at an 
arbitrary iteration.

The patch:
1) changes SCEVSDivExpr into SCEVUDivExpr,
2) replaces PartialFact() function with BinomialCoefficient(); the 
computations (essentially, the division) in BinomialCoefficient() are 
performed with the apprioprate bitwidth necessary to avoid overflow; 
unsigned division is used instead of the signed one.

Computations in BinomialCoefficient() require support from the code 
generator for APInts. Currently, we use a hack rounding up the 
neccessary bitwidth to the nearest power of 2. The hack is easy to turn 
off in future.

One remaining issue: we assume the divisor of the binomial coefficient 
formula can be computed accurately using 16 bits. It means we can handle 
AddRecs of length up to 9. In future, we should use APInts to evaluate 
the divisor.

Thanks to Nicholas for cooperation!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46955 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 11:03:14 +00:00
Chris Lattner
fd68750038 Teach basicaa that 'byval' arguments define a new memory location that 
can't be aliased to other known objects.  This allows us to know that byval 
pointer args don't alias globals, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46315 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-24 18:00:32 +00:00
Nick Lewycky
e81cd881b1 Accept both %y, %x and %x, %y as valid answers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45649 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-06 03:12:44 +00:00
Chris Lattner
f88380ba2c Fix PR1782, patch by Wojtek Matyjewicz! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44733 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-09 07:35:13 +00:00
Tanya Lattner
727842e9d7 Fix bug in regression tests that ignored stderr output in RUN lines. Updated tests and fixed broken run lines. 
XFAILed 3 arm regressions (will file bugs)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44389 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-28 04:57:00 +00:00
Dan Gohman
88e84d1f20 Change grep '' to grep {}. 
Change 2>&1 | to |&.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44344 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-27 00:10:35 +00:00
Owen Anderson
00a6d1448d Allow GVN to eliminate read-only function calls when it can detect that they are redundant. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44323 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-26 02:26:36 +00:00
Nick Lewycky
c54c561c9f Add new SCEV, SCEVSMax. This allows LLVM to analyze do-while loops. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44319 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-25 22:41:31 +00:00
Duncan Sands
e4dc717585 Ding dong, the DoesntAccessMemoryFns and 
OnlyReadsMemoryFns tables are dead!  We
get more, and more accurate, information
from gcc via the readnone and readonly
function attributes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44288 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-23 19:30:27 +00:00
Duncan Sands
920653d41e Teach alias analysis about readnone/readonly functions. 
Based on a patch by Török Edwin.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44279 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-22 21:43:27 +00:00
Nick Lewycky
4ac0e8da4a Create nodes for inline asm so that we don't crash looking for the node later. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44267 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-22 03:07:37 +00:00
Nick Lewycky
cf96db2c1d Be more careful when transforming | to +. Patch from Wojciech Matyjewicz. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44248 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-20 08:24:44 +00:00
Anton Korobeynikov
4e1a0e386c Reverted r44163 per request 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44177 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 18:33:16 +00:00
Nick Lewycky
65e2da3b4d Fix handling of overflow in loop calculation by adding new UDiv SCEV. This SCEV 
is disabled in the sense that it will refuse to create one from a UDiv
instruction, until the code is better tested.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44163 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 06:30:50 +00:00
Chris Lattner
9907cb12ae Fix PR1774 and BasicAA/2007-11-05-SizeCrash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43756 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-06 05:58:42 +00:00
Owen Anderson
f92ff03f71 Fix for PR1741. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43326 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-25 02:36:18 +00:00
Nick Lewycky
9a2f93121b Build the correct range for loops with unusual bounds. Fix from Jay Foad. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42394 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-27 14:12:54 +00:00
Dan Gohman
28beeeac4d Convert tests using "| wc -l | grep ..." to use the count script. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41097 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-15 13:36:28 +00:00
Nick Lewycky
f48a88054a Add reference to problem report. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40889 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-07 12:27:03 +00:00
Chandler Carruth
a583990ec8 This resolves a regression of BasicAA which failed to find any memory information for overloaded intrinsics (PR1600). This resolves that issue, and improves the matching scheme to use a BitVector rather than a binary search. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40872 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-06 20:57:16 +00:00
Nick Lewycky
450770de65 Fix the dates on these tests. It's not September yet. Thanks Reid! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40869 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-06 20:00:11 +00:00
Nick Lewycky
d6dac0eebc Let scalar-evolution analyze loops with an unsigned comparison for the exit 
condition. Fixes 1597.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40867 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-06 19:21:00 +00:00
Nick Lewycky
06323bfe03 Don't assume it's safe to transform a loop just because it's dominated by any 
comparison. Fixes bug 1598.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40866 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-06 18:33:46 +00:00
Chris Lattner
947596c351 update for new domtree dump format 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40857 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-06 06:17:08 +00:00
Christopher Lamb
406bfa3e21 Teach BasicAA about noalias parameter attributes, but do it correctly this time. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40711 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-02 01:18:14 +00:00
Christopher Lamb
321ff4e6d5 Revert overly aggressive interpretation of noalias 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40635 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-31 16:18:07 +00:00
Devang Patel
fee0a9c7ef Bunch of tests to check loop passes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40629 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-31 08:04:17 +00:00
Christopher Lamb
50192c2152 Teach BasicAA about noalias function parameters. Passes all of DejaGNU and test-suite. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40624 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-31 07:04:51 +00:00
Nick Lewycky
eefdebe002 Handle decrementing loops properly. Fixes PR1533. 
Always pass the constant as the second parameter to HowManyLessThans.

Remove obsolete "isSigned" parameter.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39893 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-16 02:08:00 +00:00
John Criswell
e644ef7b09 Convert .cvsignore files 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37801 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-29 16:35:07 +00:00
Zhou Sheng
fc24a72d9e Add two test cases to cover apintification change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36476 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-26 16:44:48 +00:00
Devang Patel
4fc82a6e43 New test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36293 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-21 00:34:37 +00:00
Devang Patel
7d87c1476a New test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36235 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-18 00:51:43 +00:00
Reid Spencer
eb1d74e0c8 For PR1319: 
Remove && from the end of the lines to prevent tests from throwing run
lines into the background. Also, clean up places where the same command
is run multiple times by using a temporary file.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36142 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-16 17:36:08 +00:00
Reid Spencer
43b40035ba For PR1319: 
Fix syntax of tests to ensure grep pattern is properly quoted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36134 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-16 15:31:49 +00:00