Commit Graph

181 Commits

Author SHA1 Message Date
Mon P Wang 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
Dan Gohman fb4193625a Delete useless trailing semicolons.
llvm-svn: 92740
2010-01-05 17:55:26 +00:00
Chris Lattner 850a3cd905 gvn is optimizing this better now.
llvm-svn: 90696
2009-12-06 04:16:05 +00:00
Chris Lattner 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
Chris Lattner 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
Chris Lattner 631c5b2cb9 teach GetLinearExpression to be a bit more aggressive.
llvm-svn: 89955
2009-11-26 17:00:01 +00:00
Chris Lattner 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
Chris Lattner 12dacdd359 teach basicaa that A[i] != A[i+1].
llvm-svn: 89951
2009-11-26 16:18:10 +00:00
Chris Lattner 453751031a rename test
llvm-svn: 89950
2009-11-26 16:08:41 +00:00
Chris Lattner 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
Chris Lattner 0d23076adf add a new random feature test
llvm-svn: 89921
2009-11-26 02:16:28 +00:00
Chris Lattner 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
Kenneth Uildriks 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
Dan Gohman 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
Chris Lattner 1353518b6c fix test
llvm-svn: 84405
2009-10-18 05:03:00 +00:00
Chris Lattner 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
Chris Lattner 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
Nick Lewycky 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
Nick Lewycky 91ea404e98 Add a couple new testcases.
llvm-svn: 84385
2009-10-18 00:42:07 +00:00
Chris Lattner ec411e9199 replace a useless test with a useful one
llvm-svn: 84383
2009-10-17 23:59:51 +00:00
Nick Lewycky 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
Evan Cheng 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
Evan Cheng c745bf2d87 Replace test with a simpler hand crafted one.
llvm-svn: 84069
2009-10-14 01:45:10 +00:00
Evan Cheng 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
Chris Lattner faa0320f27 don't use dead loads as tests.
llvm-svn: 83985
2009-10-13 17:39:29 +00:00
Nick Lewycky 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
Dan Gohman 0f3ef7be50 Eliminate more redundant llvm-as calls.
llvm-svn: 81540
2009-09-11 18:17:12 +00:00
Dan Gohman 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
Dan Gohman c8054d90fb Eliminate more uses of llvm-as and llvm-dis.
llvm-svn: 81293
2009-09-09 00:09:15 +00:00
Dan Gohman 4f2527cd6d Convert a few more opt | llvm-dis to opt -S.
llvm-svn: 81261
2009-09-08 22:41:33 +00:00
Dan Gohman 72a13d2476 Use opt -S instead of piping bitcode output through llvm-dis.
llvm-svn: 81257
2009-09-08 22:34:10 +00:00
Dan Gohman 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
Chris Lattner 2d3e0a35bd rename test so that name reflects what it is testing for.
llvm-svn: 80519
2009-08-30 21:36:39 +00:00
Chris Lattner c7d5796af8 convert to filecheck format.
llvm-svn: 80518
2009-08-30 21:36:06 +00:00
Dan Gohman 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
Chris Lattner d35d43dde8 change this to test for an alias result more directly.
llvm-svn: 67046
2009-03-16 18:28:27 +00:00
Nick Lewycky 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
Chris Lattner 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
Nick Lewycky 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
Owen Anderson 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
Nick Lewycky 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
Bill Wendling e38c7400c9 Remove empty test.
llvm-svn: 61095
2008-12-16 19:07:17 +00:00
Bill Wendling a397baea88 Temporarily revert r61019, r61030, and r61040. These were breaking LLVM Release
builds.

llvm-svn: 61094
2008-12-16 19:06:48 +00:00
Chris Lattner 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
Chris Lattner 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
Nick Lewycky 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
Owen Anderson 2a6adfa4f0 Remove GCSE and LoadVN from the testsuite.
llvm-svn: 54832
2008-08-16 00:00:54 +00:00
Chris Lattner 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
Matthijs Kooijman d66e18aaf6 Suppress the (stderr) output of -aa-eval, this fixes 5 tests.
llvm-svn: 52173
2008-06-10 12:39:15 +00:00
Wojciech Matyjewicz 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
Gabor Greif 1e427c3264 sabre brings to my attention that the 'tr' suffix is also obsolete
llvm-svn: 51349
2008-05-20 21:00:03 +00:00
Gabor Greif 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
Owen Anderson 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
Chris Lattner b839c05a05 rename *.llx -> *.ll, last batch.
llvm-svn: 49971
2008-04-19 22:32:52 +00:00
Owen Anderson f9ae76d89c Make GVN able to remove unnecessary calls to read-only functions again.
llvm-svn: 49842
2008-04-17 05:36:50 +00:00
Dale Johannesen 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
Owen Anderson b1e8bf2cad The functionality being tested was removed because it was horribly unsafe.
llvm-svn: 49610
2008-04-13 09:51:06 +00:00
Gabor Greif 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
Tanya Lattner f865dcd009 Remove llvm-upgrade.
llvm-svn: 47110
2008-02-14 06:56:27 +00:00
Chris Lattner 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
Nick Lewycky 0e519bb555 Accept both %y, %x and %x, %y as valid answers.
llvm-svn: 45649
2008-01-06 03:12:44 +00:00
Chris Lattner 3f42d12072 Fix PR1782, patch by Wojtek Matyjewicz!
llvm-svn: 44733
2007-12-09 07:35:13 +00:00
Tanya Lattner 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
Owen Anderson 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
Duncan Sands 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
Chris Lattner 0fc613b85d Fix PR1774 and BasicAA/2007-11-05-SizeCrash.ll
llvm-svn: 43756
2007-11-06 05:58:42 +00:00
Owen Anderson 7827a3f366 Fix for PR1741.
llvm-svn: 43326
2007-10-25 02:36:18 +00:00
Chandler Carruth 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
Christopher Lamb 1a80201426 Teach BasicAA about noalias parameter attributes, but do it correctly this time.
llvm-svn: 40711
2007-08-02 01:18:14 +00:00
Christopher Lamb 283152404d Revert overly aggressive interpretation of noalias
llvm-svn: 40635
2007-07-31 16:18:07 +00:00
Christopher Lamb 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
John Criswell 2660cef6d7 Convert .cvsignore files
llvm-svn: 37801
2007-06-29 16:35:07 +00:00
Reid Spencer 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
Reid Spencer 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
Reid Spencer 86f337eeda For PR1319:
Fix test syntax per new rules.

llvm-svn: 36133
2007-04-16 15:15:52 +00:00
Reid Spencer 3fc53d6c53 Changes to fix problems with "make check". Apparently you can redefine
functions and Tcl's just tickled with that. The fix is to give the "new"
test system a different interface function name.

llvm-svn: 36022
2007-04-14 22:51:29 +00:00
Reid Spencer 399026b1a5 Convert test cases to new llvm.exp version of llvm_runtest and fix tests
that it found to be broken.

llvm-svn: 36009
2007-04-14 19:27:03 +00:00
Reid Spencer d029c7e666 Make the llvm-runtest function much more amenable by eliminating all the
global variables that needed to be passed in. This makes it possible to
add new global variables with only a couple changes (Makefile and llvm-dg.exp)
instead of touching every single dg.exp file.

llvm-svn: 35918
2007-04-11 19:56:59 +00:00
Reid Spencer 44259a29c0 Remove use of implementation keyword.
llvm-svn: 35412
2007-03-28 02:38:26 +00:00
Reid Spencer ce380568b5 For PR761:
Remove "target endian/pointersize" or add "target datalayout" to make
the test parse properly or set the datalayout because defaults changes.

For PR645:
Make global names use the @ prefix.

For llvm-upgrade changes:
Fix test cases or completely remove use of llvm-upgrade for test cases
that cannot survive the new renaming or upgrade capabilities.

llvm-svn: 33533
2007-01-26 08:25:06 +00:00
Reid Spencer 83b3d82672 Regression is gone, don't try to find it on clean target.
llvm-svn: 33296
2007-01-17 07:59:14 +00:00