Commit Graph

46823 Commits

Author SHA1 Message Date
Dan Gohman
91bb61a1e2 For the return type of SCEVUDivExpr, use the RHS' type instead of
that of the LHS. It doesn't matter for correctness, but the LHS
is more likely than the RHS to be a pointer type in exotic cases,
and it's more tidy to have it return the integer type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72424 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-26 17:44:05 +00:00
Dan Gohman
d9480d0f68 Give SCEVNaryExpr a doxygen comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72423 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-26 17:42:32 +00:00
Dan Gohman
f876ad0a70 In cases where a pointer value is an operand of a multiplication or
division operation, don't attempt to use the operation's value as
the base of a getelementptr. This fixes PR4271.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72422 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-26 17:41:16 +00:00
Eli Friedman
74807f2520 Delete a bunch of dead code from LegalizeDAG.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72414 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-26 08:55:52 +00:00
Evan Cheng
aed4a430f4 Eliminate VarInfo::UsedBlocks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72411 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-26 06:25:46 +00:00
Chris Lattner
ab9cf1282b make memdep use the getModRefInfo method for stores instead of the
low-level alias() method, allowing it to reason more aggressively
about pointers into constant memory.  PR4189


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72403 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-25 21:28:56 +00:00
Nick Lewycky
d67a1666ec Audit the type constructors. Previously it was possible to create [0 x void]
or use labels as members of structures for example. Also included a couple of
whitespace fixes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72402 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-25 21:28:11 +00:00
Chris Lattner
d9b77159d6 add some late optimizations that GCC does. It thinks these are a win
even on Core2, not just AMD processors which was a surprise to me.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72396 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-25 20:28:19 +00:00
Chris Lattner
0c85aabfdc fix typo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72395 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-25 19:51:07 +00:00
Chris Lattner
f9dc644936 we should eventually add -march=atom and the new atom movbe instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72387 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-25 16:34:44 +00:00
Nick Lewycky
028839db09 Fix the crash debugger to actually bisect globals once it's determined that it
can't just eliminate all global initializers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72378 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-25 06:29:56 +00:00
Nick Lewycky
4c8f9af6e0 Add a bisection step on the list of instructions before doing the linear
simplification. It's not clear to me whether this can replace the first of the
linear instruction simplification stages or not, so I left it in.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72377 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-25 05:30:00 +00:00
Dan Gohman
6c0866ca83 Various comment fixes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72376 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 23:45:28 +00:00
Dan Gohman
d594e6f034 Change ScalarEvolution::getSCEVAtScope to always return the original value
in the case where a loop exit value cannot be computed, instead of only in
some cases while using SCEVCouldNotCompute in others. This simplifies
getSCEVAtScope's callers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72375 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 23:25:42 +00:00
Eli Friedman
c046c00d0a Add a comment which should hopefully make the purpose of this method a
bit clearer.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72374 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 20:32:10 +00:00
Eli Friedman
57f1a4bc40 Minor improvement to FCOPYSIGN to use BIT_CONVERT in cases where the
corresponding integer type is legal.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72373 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 20:29:11 +00:00
Torok Edwin
3d431384f0 Move Rewriter.clear() earlier, to avoid triggerring the AssertingVH by
one of the RecursivelyDeleteTriviallyDeadInstructions.
Add a comment explaining why the cache needs to be cleared.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72372 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 20:08:21 +00:00
Torok Edwin
3790fb0c03 Instead of clearing the rewriter, don't attempt to rewrite dead phi nodes.
Also fix 80 column violation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72371 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 19:36:09 +00:00
Dan Gohman
95bdbfa066 When rewriting the loop exit test with the canonical induction variable,
leave the original comparison in place if it has other uses, since the
other uses won't be dominated by the new comparison instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72369 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 19:11:38 +00:00
Dan Gohman
fb5a3419f3 Fix this code for hosts where std::vector doesn't have .data().
Use &Ops[0] instead, which is safe since Ops will never be empty here.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72368 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 19:02:45 +00:00
Dan Gohman
14fba294e1 When replacing a floating-point comparison with an integer
comparison, use takeName to give the integer comparison a name.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72367 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 18:09:01 +00:00
Dan Gohman
453aa4fbf1 Generalize SCEVExpander::visitAddRecExpr's GEP persuit, and avoid
sending SCEVUnknowns to expandAddToGEP. This avoids the need for
expandAddToGEP to bend the rules and peek into SCEVUnknown
expressions.

Factor out the code for testing whether a SCEV can be factored by
a constant for use in a GEP index. This allows it to handle
SCEVAddRecExprs, by recursing.

As a result, SCEVExpander can now put more things in GEP indices,
so it emits fewer explicit mul instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72366 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 18:06:31 +00:00
Dan Gohman
3925043af0 When the low bits of one operand of an add are zero, that number
of low bits of the other operand are preserved in the output.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72365 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 18:02:35 +00:00
Torok Edwin
b679de2a21 The rewriter may hold references to instructions that are deleted because they are trivially dead.
Fix by clearing the rewriter cache before deleting the trivially dead
instructions.
Also make InsertedExpressions use an AssertingVH to catch these
bugs easier.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72364 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 14:23:16 +00:00
Eli Friedman
ed2f8c557a Rewrite ISD::FCOPYSIGN lowering to never use i64. Not really ideal, but
it's late, and I don't have any better ideas at the moment.  Fixes PR4257.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72363 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 10:21:20 +00:00
Torok Edwin
2c23501031 Make bugpoint emit a bugpoint-reduced-blocks.bc, because bugpoint itself
can crash during instruction simplification (for example if it creates a
broken module).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72362 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 09:40:47 +00:00
Torok Edwin
23d471f62e Add -disable-global-remove option to bugpoint.
Sometimes when bugpointing a crash the bugpoint-reduced-simplified.bc reproduces
a totally different bug than the original one ("GV doesn't have initializer").
Although its useful to report that bug too, I need a way to reduce the original
bug, hence I introduced -disable-global-remove.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72361 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 09:31:04 +00:00
Eli Friedman
7d869fb062 Update for CMakeLists; untested, so tell me if there are issues.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72360 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 09:13:13 +00:00
Eli Friedman
957bffaeca Remove checks of getTypeAction from LegalizeOp; we already assert that
all results and all operands are legal, so this change shouldn't affect 
behavior at all.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72359 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 08:42:01 +00:00
Eli Friedman
1fde9c5f77 Disable type legalization in LegalizeDAG.
This leaves around 4000 lines of dead code; I'll clean that up 
in subsequent commits.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72358 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 02:46:31 +00:00
Nick Lewycky
86c48647f3 Remove border around table used for layout.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72357 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 02:46:06 +00:00
Eli Friedman
1a8229b162 Make the PPC backend use a legal type for the operands to the BUILD_VECTOR
nodes it generates.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72356 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-24 02:03:36 +00:00
Eli Friedman
2a35b1c54b Fix a bug in the expansion of EXTRACT_SUBVECTOR in
ExpandExtractFromVectorThroughStack.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72351 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 23:03:28 +00:00
Eli Friedman
108b519cc1 Make the X86 backend mark EXTRACT_SUBVECTOR as Expand, at least for the
moment.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72350 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 22:44:52 +00:00
Eli Friedman
3d43b3f6d7 Add a proper implementation of EXTRACT_SUBVECTOR legalization that
doesn't split legal vector operands.  This is necessary because the 
type legalization (and therefore, vector splitting) code will be going 
away soon.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72349 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 22:37:25 +00:00
Torok Edwin
63c283e784 Use latin symbols. I was told not everybody has a UTF-8 capable editor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72343 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 20:40:47 +00:00
Torok Edwin
38def0c3d6 Write family name last, as other entries in this file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72340 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 20:21:09 +00:00
Torok Edwin
5bfeded6e5 Add myself.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72339 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 20:19:52 +00:00
Anton Korobeynikov
6d7d2aa38a Add ARMv7 architecture, Cortex processors and different FPU modes handling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72337 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 19:51:43 +00:00
Anton Korobeynikov
88ce667003 Emit ARM Build Attributes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72336 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 19:51:20 +00:00
Anton Korobeynikov
41a024385f Propagate CPU string out of SubtargetFeatures
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72335 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 19:50:50 +00:00
Jay Foad
a14be3b264 Work around a page size issue on Cygwin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72332 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 17:57:59 +00:00
Torok Edwin
6bb4958543 Fix PR4254.
The DAGCombiner created a negative shiftamount, stored in an
unsigned variable. Later the optimizer eliminated the shift entirely as being
undefined.
Example: (srl (shl X, 56) 48). ShiftAmt is 4294967288.
Fix it by checking that the shiftamount is positive, and storing in a signed
variable.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72331 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 17:29:48 +00:00
Torok Edwin
1f04462c22 stat64/open64/lseek64 for the interpreter
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72329 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 16:23:59 +00:00
Torok Edwin
f5ff1d335b available_externall linkage is not local, this was confusing the codegenerator,
and it wasn't generating calls through @PLT for these functions.
hasLocalLinkage() is now false for available_externally,
I attempted to fix the inliner and dce to handle available_externally properly.
It passed make check.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72328 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 14:06:57 +00:00
Eli Friedman
d14ce2f1fc Fix test to account for legalization changes; I think this ends up
running an extra DAGCombine pass which improves the code a bit.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72326 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 13:15:11 +00:00
Eli Friedman
5c22c80744 Add a new step to legalization to legalize vector math operations. This
will allow simplifying LegalizeDAG to eliminate type legalization.  (I 
have a patch to do that, but it's not quite finished; I'll commit it 
once it's finished and I've fixed any review comments for this patch.)  
See the comment at the beginning of 
lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp for more details on the
motivation for this patch.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72325 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 12:35:30 +00:00
Eli Friedman
948e95a381 Make the x86 backend custom-lower UINT_TO_FP and FP_TO_UINT on 32-bit
systems instead of attempting to promote them to a 64-bit SINT_TO_FP or 
FP_TO_SINT.  This is in preparation for removing the type legalization 
code from LegalizeDAG: once type legalization is gone from LegalizeDAG, 
it won't be able to handle the i64 operand/result correctly.

This isn't quite ideal, but I don't think any other operation for any 
target ends up in this situation, so treating this case specially seems 
reasonable.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72324 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 09:59:16 +00:00
Oscar Fuentes
db917fe8aa CMake: Use libdl only when available. Fixes build on FreeBSD.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72311 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23 02:37:24 +00:00
Evan Cheng
2ddb6f1440 Fix bug in FoldFCmp_IntToFP_Cst. If inttofp is a uintofp, use unsigned instead of signed integer constant.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72300 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-22 23:10:53 +00:00