22e0e1cecb
Delete unneeded ssp attributes.
...
llvm-svn: 118836
2010-11-11 21:08:46 +00:00
02538ac4d3
Make BasicAliasAnalysis a normal AliasAnalysis implementation which
...
does normal initialization and normal chaining. Change the default
AliasAnalysis implementation to NoAlias.
Update StandardCompileOpts.h and friends to explicitly request
BasicAliasAnalysis.
Update tests to explicitly request -basicaa.
llvm-svn: 116720
2010-10-18 18:04:47 +00:00
ab3a128582
PR7959: Handle negative scales in GEPs correctly in BasicAA for non-64-bit
...
targets.
llvm-svn: 114015
2010-09-15 20:08:03 +00:00
bb451461ec
remove some noise from tests.
...
llvm-svn: 112889
2010-09-02 22:35:33 +00:00
7983340465
Fix constant-over-index.ll test on windows.
...
llvm-svn: 112483
2010-08-30 15:08:02 +00:00
3decde9305
refix PR1143 by making basicaa analyze zexts of indices aggresively,
...
which I broke with a recent patch.
llvm-svn: 111452
2010-08-18 23:09:49 +00:00
a25c05ed15
fix a buggy test
...
llvm-svn: 111354
2010-08-18 04:55:12 +00:00
a33edcb56c
fix PR7589: In brief:
...
gep P, (zext x) != gep P, (sext x)
DecomposeGEPExpression was getting this wrong, confusing
basicaa.
llvm-svn: 111352
2010-08-18 04:28:19 +00:00
c8e38eb60b
filecheckize and detrivialize.
...
llvm-svn: 111350
2010-08-18 04:25:43 +00:00
e68958fcdf
Implement a proper getModRefInfo for va_arg.
...
llvm-svn: 110458
2010-08-06 18:24:38 +00:00
884dd752c3
Implement AccessesArguments checking in the two-callsite form
...
of BasicAA::getModRefInfo. This allows BasicAA to say that two
memset calls to non-aliasing memory locations don't interfere.
llvm-svn: 110393
2010-08-05 23:34:50 +00:00
26ef7c7ab7
Fix memdep's code for reasoning about dependences between two calls. A Ref
...
response from getModRefInfo is not useful here. Instead, check for identical
calls only in the NoModRef case.
Reapply r110270, and strengthen it to compensate for the memdep changes.
When both calls are readonly, there is no dependence between them.
llvm-svn: 110382
2010-08-05 22:09:15 +00:00
554b012f67
Revert r110270 for now. It appears to uncover a memdep bug.
...
llvm-svn: 110293
2010-08-05 00:43:10 +00:00
109561845b
The trouble with testing for "ModRef" and "NoModRef" is that
...
one is a suffix of the other, and FileCheck accepts superstrings.
Adjust the output to avoid this problem.
llvm-svn: 110280
2010-08-04 23:37:55 +00:00
bd33dab633
The two-callsite form of AliasAnalysis::getModRefInfo is documented
...
to return Ref if the left callsite only reads memory read or written
by the right callsite; fix BasicAliasAnalysis to implement this.
Add AliasAnalysisEvaluator support for testing the two-callsite
form of getModRefInfo.
llvm-svn: 110270
2010-08-04 22:56:29 +00:00
00ef93258a
Remove interprocedural-basic-aa and associated code. The AliasAnalysis
...
interface needs implementations to be consistent, so any code which
wants to support different semantics must use a different interface.
It's not currently worthwhile to add a new interface for this new
concept.
Document that AliasAnalysis doesn't support cross-function queries.
llvm-svn: 107776
2010-07-07 14:27:09 +00:00
84f90a387d
Remove context sensitivity concerns from interprocedural-basic-aa, and
...
make it more aggressive in cases where both pointers are known to live
in the same function.
llvm-svn: 107420
2010-07-01 20:08:40 +00:00
9bbd007f15
Add a few more interesting testcases.
...
llvm-svn: 107177
2010-06-29 18:17:11 +00:00
0824affeff
Add an Intraprocedural form of BasicAliasAnalysis, which aims to
...
properly handles instructions and arguments defined in different
functions, or across recursive function iterations.
llvm-svn: 107109
2010-06-29 00:50:39 +00:00
7c34ece501
Fix Value::stripPointerCasts and BasicAA to avoid trouble on
...
code in unreachable blocks, which have have use-def cycles.
This fixes PR7514.
llvm-svn: 107071
2010-06-28 21:16:52 +00:00
cb45bd9cb3
Pointers to zero-sized objects don't point to overlapping objects.
...
llvm-svn: 100789
2010-04-08 18:11:50 +00:00
3ae2dd2ba5
add newlines at the end of files.
...
llvm-svn: 100705
2010-04-07 22:53:17 +00:00
c576ee9040
Reapply address space patch after fixing an issue in MemCopyOptimizer.
...
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
llvm-svn: 100304
2010-04-04 03:10:48 +00:00
999c1b927b
Revert r100191 since it breaks objc in clang
...
llvm-svn: 100199
2010-04-02 18:43:02 +00:00
a972ab8564
Reapply address space patch after fixing an issue in MemCopyOptimizer.
...
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
llvm-svn: 100191
2010-04-02 18:04:15 +00:00
6f7fd28824
Revert Mon Ping's change 99928, since it broke all the llvm-gcc buildbots.
...
llvm-svn: 99948
2010-03-30 22:27:04 +00:00
7460571381
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
...
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
A update of langref will occur in a subsequent checkin.
llvm-svn: 99928
2010-03-30 20:55:56 +00:00
fb4193625a
Delete useless trailing semicolons.
...
llvm-svn: 92740
2010-01-05 17:55:26 +00:00
850a3cd905
gvn is optimizing this better now.
...
llvm-svn: 90696
2009-12-06 04:16:05 +00:00
5fe97e7aca
@test9 is a testcase for r89958. Before 89958, we misanalyzed the
...
first expression as P+4+4*i which we considered to possibly alias
P+4*j. Now we correctly analyze the former one as P+1+4*i.
@test10 is a sanity test that verfies that we know that P+4+4*i != P+4*i.
llvm-svn: 89960
2009-11-26 19:25:46 +00:00
1bf7ff704a
Implement PR1143 (at -m64) by making basicaa look through extensions. We
...
previously already handled it at -m32 because there were no i32->i64
extensions for addressing.
llvm-svn: 89959
2009-11-26 18:53:33 +00:00
631c5b2cb9
teach GetLinearExpression to be a bit more aggressive.
...
llvm-svn: 89955
2009-11-26 17:00:01 +00:00
29bc8a91d3
Teach basicaa that x|c == x+c when the c bits of x are clear. This
...
allows us to compile the example in readme.txt into:
LBB1_1: ## %bb
movl 4(%rdx,%rax), %ecx
movl %ecx, %esi
imull (%rdx,%rax), %esi
imull %esi, %ecx
movl %esi, 8(%rdx,%rax)
imull %ecx, %esi
movl %ecx, 12(%rdx,%rax)
movl %esi, 16(%rdx,%rax)
imull %ecx, %esi
movl %esi, 20(%rdx,%rax)
addq $16, %rax
cmpq $4000, %rax
jne LBB1_1
instead of:
LBB1_1:
movl (%rdx,%rax), %ecx
imull 4(%rdx,%rax), %ecx
movl %ecx, 8(%rdx,%rax)
imull 4(%rdx,%rax), %ecx
movl %ecx, 12(%rdx,%rax)
imull 8(%rdx,%rax), %ecx
movl %ecx, 16(%rdx,%rax)
imull 12(%rdx,%rax), %ecx
movl %ecx, 20(%rdx,%rax)
addq $16, %rax
cmpq $4000, %rax
jne LBB1_1
GCC (4.2) doesn't seem to be able to eliminate the loads in this
testcase either, it generates:
L2:
movl (%rdx), %eax
imull 4(%rdx), %eax
movl %eax, 8(%rdx)
imull 4(%rdx), %eax
movl %eax, 12(%rdx)
imull 8(%rdx), %eax
movl %eax, 16(%rdx)
imull 12(%rdx), %eax
movl %eax, 20(%rdx)
addl $4, %ecx
addq $16, %rdx
cmpl $1002, %ecx
jne L2
llvm-svn: 89952
2009-11-26 16:26:43 +00:00
12dacdd359
teach basicaa that A[i] != A[i+1].
...
llvm-svn: 89951
2009-11-26 16:18:10 +00:00
453751031a
rename test
...
llvm-svn: 89950
2009-11-26 16:08:41 +00:00
7a5b56aca9
Change the other half of aliasGEP (which handles GEP differencing) to use DecomposeGEPExpression. This dramatically simplifies and shrinks the code by eliminating the horrible CheckGEPInstructions method, fixes a miscompilation ( @test3 ) and makes the code more aggressive. In particular, we now handle the @test4 case, which is reduced from the SmallPtrSet constructor. Missing this caused us to emit a variable length memset instead of a fixed size one.
...
llvm-svn: 89922
2009-11-26 02:17:34 +00:00
0d23076adf
add a new random feature test
...
llvm-svn: 89921
2009-11-26 02:16:28 +00:00
db1e9f1290
remove a silly condition that doesn't make a lot of sense anymore.
...
llvm-svn: 89601
2009-11-22 16:15:59 +00:00
90fedc6ef9
Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test
...
llvm-svn: 85900
2009-11-03 15:29:06 +00:00
3b7ba5f35b
Teach BasicAA how to analyze Select instructions, and make it more
...
aggressive on PHI instructions.
llvm-svn: 85158
2009-10-26 21:55:43 +00:00
1353518b6c
fix test
...
llvm-svn: 84405
2009-10-18 05:03:00 +00:00
d2b3a4f7b8
tighten up test3, add test3a for the converse
...
transform, which isn't happening yet.
llvm-svn: 84402
2009-10-18 04:55:26 +00:00
457ecd5dab
tighten test2, add a test that it doesn't get transformed in the invalid edge case.
...
llvm-svn: 84401
2009-10-18 04:50:18 +00:00
ecb832fd93
Merge tests into modref.ll. Also add a test for r84174 at Chris' behest!
...
llvm-svn: 84400
2009-10-18 04:41:36 +00:00
91ea404e98
Add a couple new testcases.
...
llvm-svn: 84385
2009-10-18 00:42:07 +00:00
ec411e9199
replace a useless test with a useful one
...
llvm-svn: 84383
2009-10-17 23:59:51 +00:00
f01ba005a7
Make use of the result of the loads even though that means adding -instcombine.
...
llvm-svn: 84125
2009-10-14 19:02:13 +00:00
c1eed9d120
Another BasicAA fix. If a value does not alias a GEP's base pointer, then it
...
cannot alias the GEP. GEP pointer alias rule states this clearly:
A pointer value formed from a getelementptr instruction is associated with the
addresses associated with the first operand of the getelementptr.
llvm-svn: 84079
2009-10-14 06:41:49 +00:00
c745bf2d87
Replace test with a simpler hand crafted one.
...
llvm-svn: 84069
2009-10-14 01:45:10 +00:00
c10e88db22
Teach basic AA about PHI nodes. If all operands of a phi NoAlias another value than it's safe to declare the PHI NoAlias the value. Ditto for MustAlias.
...
llvm-svn: 84038
2009-10-13 22:02:20 +00:00
faa0320f27
don't use dead loads as tests.
...
llvm-svn: 83985
2009-10-13 17:39:29 +00:00
e2782c7614
Teach BasicAA a little something about the atomic intrinsics: they can only
...
modify through the pointer they're given.
llvm-svn: 83959
2009-10-13 07:48:38 +00:00
0f3ef7be50
Eliminate more redundant llvm-as calls.
...
llvm-svn: 81540
2009-09-11 18:17:12 +00:00
1880092722
Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
...
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.
llvm-svn: 81537
2009-09-11 18:01:28 +00:00
c8054d90fb
Eliminate more uses of llvm-as and llvm-dis.
...
llvm-svn: 81293
2009-09-09 00:09:15 +00:00
4f2527cd6d
Convert a few more opt | llvm-dis to opt -S.
...
llvm-svn: 81261
2009-09-08 22:41:33 +00:00
72a13d2476
Use opt -S instead of piping bitcode output through llvm-dis.
...
llvm-svn: 81257
2009-09-08 22:34:10 +00:00
9737a63ed8
Change these tests to feed the assembly files to opt directly, instead
...
of using llvm-as, now that opt supports this.
llvm-svn: 81226
2009-09-08 16:50:01 +00:00
2d3e0a35bd
rename test so that name reflects what it is testing for.
...
llvm-svn: 80519
2009-08-30 21:36:39 +00:00
c7d5796af8
convert to filecheck format.
...
llvm-svn: 80518
2009-08-30 21:36:06 +00:00
776e4c8d35
Teach BasicAliasAnalysis to understand constant gep indices that fall
...
beyond their associated static array type.
I believe that this fixes a legitimate bug, because BasicAliasAnalysis
already has code to check for this condition that works for non-constant
indices, however it was missing the case of constant indices. With this
change, it checks for both.
This fixes PR4267, and miscompiles of SPEC 188.ammp and 464.h264.href.
llvm-svn: 72451
2009-05-27 01:48:27 +00:00
d35d43dde8
change this to test for an alias result more directly.
...
llvm-svn: 67046
2009-03-16 18:28:27 +00:00
8e0f9ac051
Add a replacement for 2009-02-12-GEPNoalias.ll that works without -debug.
...
llvm-svn: 67011
2009-03-14 19:40:09 +00:00
a18c768e6d
remove a buggy test, it is not ok to use -debug in RUN line.
...
llvm-svn: 66918
2009-03-13 18:19:34 +00:00
c60bd012bc
BasicAA was making the assumption that a local allocation which hadn't escaped
...
couldn't ever be the return of call instruction. However, it's quite possible
that said local allocation is itself the return of a function call. That's
what malloc and calloc are for, actually.
llvm-svn: 64442
2009-02-13 07:06:27 +00:00
1caf7fef8e
Finish making AliasAnalysis aware of the fact that most atomic intrinsics only dereference their arguments, and enhance
...
BasicAA to make use of this fact when computing ModRef info.
llvm-svn: 63718
2009-02-04 05:16:46 +00:00
2abb108f1b
Resubmit support for the 'nocapture' attribute.
...
The problematic part of this patch is that we were out of attribute bits,
requiring some fancy bit hacking to make it fit (by shrinking alignment)
without breaking existing users or the file format.
This change will require users to rebuild llvm-gcc to match llvm.
llvm-svn: 61239
2008-12-19 06:39:12 +00:00
e38c7400c9
Remove empty test.
...
llvm-svn: 61095
2008-12-16 19:07:17 +00:00
a397baea88
Temporarily revert r61019, r61030, and r61040. These were breaking LLVM Release
...
builds.
llvm-svn: 61094
2008-12-16 19:06:48 +00:00
e3401db1f3
Teach basicaa to use the nocapture attribute when possible. When the
...
intrinsics are properly marked nocapture, the fixme should be addressed.
llvm-svn: 61040
2008-12-15 18:59:22 +00:00
2e84a548d6
Allow basicaa to walk through geps with identical indices in
...
parallel, allowing it to decide that P/Q must alias if A/B
must alias in things like:
P = gep A, 0, i, 1
Q = gep B, 0, i, 1
This allows GVN to delete 62 more instructions out of 403.gcc.
llvm-svn: 60820
2008-12-10 01:04:47 +00:00
f5ffcbcd0b
Extend the 'noalias' attribute to function return values. This is intended to
...
indicate functions that allocate, such as operator new, or list::insert. The
actual definition is slightly less strict (for now).
No changes to the bitcode reader/writer, asm printer or verifier were needed.
llvm-svn: 59934
2008-11-24 03:41:24 +00:00
2a6adfa4f0
Remove GCSE and LoadVN from the testsuite.
...
llvm-svn: 54832
2008-08-16 00:00:54 +00:00
b35d9b5e07
If we are checking to see if the result of a call aliases a
...
pointer derived from a local allocation, if the local allocation
never escapes, the pointers can't alias. This implements PR2436
llvm-svn: 52301
2008-06-16 06:19:11 +00:00
d66e18aaf6
Suppress the (stderr) output of -aa-eval, this fixes 5 tests.
...
llvm-svn: 52173
2008-06-10 12:39:15 +00:00
416867a81b
Fixes PR2395. Looking for a constant in a GEP tail (when the first GEP
...
is longer than the second one) should stop after finding one. Added break
instruction guarantees it. It also changes difference between offsets to
absolute value of this difference in the condition.
llvm-svn: 51875
2008-06-02 17:26:12 +00:00
1e427c3264
sabre brings to my attention that the 'tr' suffix is also obsolete
...
llvm-svn: 51349
2008-05-20 21:00:03 +00:00
f45ff35bfe
Rename the last test with .llx extension to .ll, resolve duplicate test by renaming to isnan2. Now that no test has llx ending there is no need to search for them from dg.exp too.
...
llvm-svn: 51328
2008-05-20 19:52:04 +00:00
a74d72d01f
Fix this test. It was testing broken behavior in that it required ADCE to eliminate
...
a potentially infinite loop, which is undesirable. Instead, test the LICM behavior
that we're really interested in.
llvm-svn: 51177
2008-05-16 04:25:09 +00:00
b839c05a05
rename *.llx -> *.ll, last batch.
...
llvm-svn: 49971
2008-04-19 22:32:52 +00:00
f9ae76d89c
Make GVN able to remove unnecessary calls to read-only functions again.
...
llvm-svn: 49842
2008-04-17 05:36:50 +00:00
8fc8a272e0
Don't assume a tail call can't reference a byval
...
argument to the outer function, this isn't correct.
llvm-svn: 49731
2008-04-15 17:41:34 +00:00
b1e8bf2cad
The functionality being tested was removed because it was horribly unsafe.
...
llvm-svn: 49610
2008-04-13 09:51:06 +00:00
f77e6977a0
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
...
llvm-svn: 47712
2008-02-28 08:38:45 +00:00
f865dcd009
Remove llvm-upgrade.
...
llvm-svn: 47110
2008-02-14 06:56:27 +00:00
9104d71269
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.
llvm-svn: 46315
2008-01-24 18:00:32 +00:00
0e519bb555
Accept both %y, %x and %x, %y as valid answers.
...
llvm-svn: 45649
2008-01-06 03:12:44 +00:00
3f42d12072
Fix PR1782, patch by Wojtek Matyjewicz!
...
llvm-svn: 44733
2007-12-09 07:35:13 +00:00
8f342f8ef3
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)
llvm-svn: 44389
2007-11-28 04:57:00 +00:00
4f833c7610
Allow GVN to eliminate read-only function calls when it can detect that they are redundant.
...
llvm-svn: 44323
2007-11-26 02:26:36 +00:00
38a5e82ef4
Teach alias analysis about readnone/readonly functions.
...
Based on a patch by Török Edwin.
llvm-svn: 44279
2007-11-22 21:43:27 +00:00
0fc613b85d
Fix PR1774 and BasicAA/2007-11-05-SizeCrash.ll
...
llvm-svn: 43756
2007-11-06 05:58:42 +00:00
7827a3f366
Fix for PR1741.
...
llvm-svn: 43326
2007-10-25 02:36:18 +00:00
bebc3bb2e3
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.
...
llvm-svn: 40872
2007-08-06 20:57:16 +00:00
1a80201426
Teach BasicAA about noalias parameter attributes, but do it correctly this time.
...
llvm-svn: 40711
2007-08-02 01:18:14 +00:00
283152404d
Revert overly aggressive interpretation of noalias
...
llvm-svn: 40635
2007-07-31 16:18:07 +00:00
b08423b36e
Teach BasicAA about noalias function parameters. Passes all of DejaGNU and test-suite.
...
llvm-svn: 40624
2007-07-31 07:04:51 +00:00
2660cef6d7
Convert .cvsignore files
...
llvm-svn: 37801
2007-06-29 16:35:07 +00:00
6e87ec4351
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.
llvm-svn: 36142
2007-04-16 17:36:08 +00:00
4dcf8bff4b
For PR1319:
...
Fix syntax of tests to ensure grep pattern is properly quoted.
llvm-svn: 36134
2007-04-16 15:31:49 +00:00
Dan Gohman