summaryrefslogtreecommitdiffstats
path: root/llvm/lib
Commit message (Collapse)AuthorAgeFilesLines
* Handle some additonal cases of external weak globals.Dale Johannesen2009-05-131-4/+22
| | | | llvm-svn: 71717
* Move the bookkeeping of the debug scopes back to the place where itBill Wendling2009-05-131-20/+20
| | | | | | | | belonged. The variable declaration stuff wasn't happy with it where it was. Sorry that the testcase is so big. Bugpoint wasn't able to reduce it successfully. llvm-svn: 71714
* Don't generate a select whose operand is load of a weakDale Johannesen2009-05-131-0/+6
| | | | | | | external. These may have address 0 and are not safe to execute unconditionally. llvm-svn: 71688
* PEI: rename PEI.h to PrologEpilogInserter.h to adhere to file naming standardJohn Mosby2009-05-133-2/+2
| | | | llvm-svn: 71678
* calls in nothrow functions can be marked nothrow even if the calleeChris Lattner2009-05-131-0/+10
| | | | | | | is not known to be nothrow. This allows readnone/readonly functions to be deleted even if we don't know whether the callee can throw. llvm-svn: 71676
* Run through the list of globals once and sectionize all types of globlas ↵Sanjiv Gupta2009-05-134-38/+72
| | | | | | includeing declarations. Later emit them from their section lists. llvm-svn: 71661
* Avoid getting a compiler warningDuncan Sands2009-05-131-1/+1
| | | | | | | | IVUsers.cpp: In member function ‘bool llvm::IVUsers::AddUsersIfInteresting(llvm::Instruction*)’: IVUsers.cpp:221: warning: ‘isSigned’ may be used uninitialized in this function with gcc-4.3. llvm-svn: 71654
* add IVUsers.cppChris Lattner2009-05-131-0/+1
| | | | llvm-svn: 71646
* add ShrinkWrapping.cppChris Lattner2009-05-131-0/+1
| | | | llvm-svn: 71645
* Fix PR4206 - crash in simplify lib callsChris Lattner2009-05-131-1/+1
| | | | llvm-svn: 71644
* Fix for PR4121. If TwoAddressInstructionPass removes a dead def, and the regBLang Hames2009-05-131-0/+6
| | | | | | operand was killed, the kill needs to be removed from regB's VarInfo. llvm-svn: 71635
* Add three new helper routines, getNoopOrZeroExtend,Dan Gohman2009-05-131-0/+47
| | | | | | | | | getNoopOrSignExtend, and getTruncateOrNoop. These are similar to getTruncateOrZeroExtend etc., except that they assert that the conversion is either not widening or narrowing, as appropriate. These will be used in some upcoming fixes. llvm-svn: 71632
* Add an int64_t variant of abs, for host environmentsDale Johannesen2009-05-132-5/+5
| | | | | | | | | | | without one. Use it where we were using abs on int64_t objects. (I strongly suspect the casts to unsigned in the fragments in LoopStrengthReduce are not doing whatever the original intent was, but the obvious change to uint64_t doesn't work. Maybe later.) llvm-svn: 71612
* Add support for GCC compatible builtin setjmp and longjmp intrinsics. This isJim Grosbach2009-05-127-5/+60
| | | | | | | a supporting preliminary patch for GCC-compatible SjLJ exception handling. Note that these intrinsics are not designed to be invoked directly by the user, but rather used by the front-end as target hooks for exception handling. llvm-svn: 71610
* If header of inner loop is aligned, do not align the outer loop header. We ↵Evan Cheng2009-05-121-6/+33
| | | | | | don't want to add nops in the outer loop for the sake of aligning the inner loop. llvm-svn: 71609
* Teach TransferDeadness to delete truly dead instructions if they do not ↵Evan Cheng2009-05-122-21/+60
| | | | | | produce side effects. llvm-svn: 71606
* correct register class for tADDspi to GPR since the register will always be SPJim Grosbach2009-05-121-1/+1
| | | | llvm-svn: 71602
* More MSVC fixes -- class/struct conflicts.Bill Wendling2009-05-121-1/+1
| | | | llvm-svn: 71601
* Restructure PEI code:John Mosby2009-05-123-1307/+1375
| | | | | | | | | - moved shrink wrapping code from PrologEpilogInserter.cpp to new file ShrinkWrapping.cpp. - moved PEI pass definition into new shared header PEI.h. llvm-svn: 71588
* Switch to using IRBuilder throughout.Jay Foad2009-05-121-204/+195
| | | | llvm-svn: 71587
* 80 col violations.Evan Cheng2009-05-121-2/+4
| | | | llvm-svn: 71582
* Fixed a stack slot coloring with reg bug: do not update implicit use / def ↵Evan Cheng2009-05-122-16/+47
| | | | | | when doing forward / backward propagation. llvm-svn: 71574
* Fix up a few minor typos in comments.Bob Wilson2009-05-121-7/+7
| | | | llvm-svn: 71563
* Fix 80-col violations and remove trailing whitespace. No functional changes.Bob Wilson2009-05-121-69/+71
| | | | llvm-svn: 71562
* Iterate over globals once and sectionize them into appropriate sections.Sanjiv Gupta2009-05-124-78/+111
| | | | | | | Later in asmprinter, go over thsese sections and print them. Do not print empty sections. llvm-svn: 71560
* We do not need to create a label for external defs and decls,Sanjiv Gupta2009-05-122-17/+4
| | | | | | just emit a comment for readability. llvm-svn: 71544
* Mark mayLoad, mayStore for insns correctly and use themSanjiv Gupta2009-05-123-24/+14
| | | | | | to check if an insn is accessing memory during mem sel optimization. llvm-svn: 71537
* Fix pr4195: When iterating through predecessor blocks, break out of the loopBob Wilson2009-05-121-3/+3
| | | | | | | | | | | after finding the (unique) layout predecessor. Sometimes a block may be listed more than once, and processing it more than once in this loop can lead to inconsistent values for FtTBB/FtFBB, since the AnalyzeBranch method does not clear these values. There's no point in continuing the loop regardless. The testcase for this is reduced from the 2003-05-02-DependentPHI SingleSource test. llvm-svn: 71536
* Factor the code for collecting IV users out of LSR into an IVUsers class,Dan Gohman2009-05-124-930/+975
| | | | | | | | | | | | | | | | | | | | | | | | and generalize it so that it can be used by IndVarSimplify. Implement the base IndVarSimplify transformation code using IVUsers. This removes TestOrigIVForWrap and associated code, as ScalarEvolution now has enough builtin overflow detection and folding logic to handle all the same cases, and more. Run "opt -iv-users -analyze -disable-output" on your favorite loop for an example of what IVUsers does. This lets IndVarSimplify eliminate IV casts and compute trip counts in more cases. Also, this happens to finally fix the remaining testcases in PR1301. Now that IndVarSimplify is being more aggressive, it occasionally runs into the problem where ScalarEvolutionExpander's code for avoiding duplicate expansions makes it difficult to ensure that all expanded instructions dominate all the instructions that will use them. As a temporary measure, IndVarSimplify now uses a FixUsesBeforeDefs function to fix up instructions inserted by SCEVExpander. Fortunately, this code is contained, and can be easily removed once a more comprehensive solution is available. llvm-svn: 71535
* When forgetting SCEVs for loop PHIs, don't forget SCEVUnknown values.Dan Gohman2009-05-121-2/+12
| | | | | | | | | These values aren't analyzable, so they don't care if more information about the loop trip count can be had. Also, SCEVUnknown is used for a PHI while the PHI itself is being analyzed, so it needs to be left in the Scalars map. This fixes a variety of subtle issues. llvm-svn: 71533
* Fix GetMinTrailingZeros for SCEVSignExtend and SCEVZeroExtendExpr toDan Gohman2009-05-121-2/+2
| | | | | | | | | | return the correct value when the cast operand is all zeros. This ought to be pretty rare, because it would mean that the regular SCEV folding routines missed a case, though there are cases they might legitimately miss. Also, it's unlikely anything currently using GetMinTrailingZeros cares about this case. llvm-svn: 71532
* Avoid unneeded SIB byte encoding. Patch by Zoltan Varga.Evan Cheng2009-05-122-2/+4
| | | | llvm-svn: 71520
* - Record that the debug info is actually used so that the label folder doesn'tBill Wendling2009-05-121-10/+10
| | | | | | | blast it away. - Move InlineInfo bookkeeping to bookkeep the correct debug info object. llvm-svn: 71519
* Fixed PR4090.Lang Hames2009-05-111-1/+16
| | | | llvm-svn: 71495
* Teach LSR to optimize more loop exit compares, i.e. change them to use ↵Evan Cheng2009-05-111-43/+139
| | | | | | | | postinc iv value. Previously LSR would only optimize those which are in the loop latch block. However, if LSR can prove it is safe (and profitable), it's now possible to change those not in the latch blocks to use postinc values. Also, if the compare is the only use, LSR would place the iv increment instruction before the compare instead in the latch. llvm-svn: 71485
* Fix PR4188. TailMerging can't tolerate inexactDale Johannesen2009-05-111-0/+15
| | | | | | sucessor info. llvm-svn: 71478
* Apply patch review feedback.Evan Cheng2009-05-111-0/+2
| | | | llvm-svn: 71472
* Don't #include DerivedTypes.h from TargetData.h.Jay Foad2009-05-111-0/+1
| | | | llvm-svn: 71468
* Fix two wording errors that Duncan spotted.Dan Gohman2009-05-111-1/+1
| | | | llvm-svn: 71459
* Unbreak non-debug build.Evan Cheng2009-05-111-0/+8
| | | | llvm-svn: 71457
* Eliminate a compiler warning.Evan Cheng2009-05-111-0/+1
| | | | llvm-svn: 71456
* When scalarizing a vector BITCAST, check whether the operand has vectorDan Gohman2009-05-111-1/+2
| | | | | | | | type, rather than assume that it does. If the operand is not vector, it shouldn't be run through ScalarizeVectorOp. This fixes one of the testcases in PR3886. llvm-svn: 71453
* LLVM has unaligned loads and stores now.Dan Gohman2009-05-111-2/+1
| | | | llvm-svn: 71449
* Add terminal width detection to llvm::sys::Process. This is needed toDouglas Gregor2009-05-112-0/+53
| | | | | | fix Clang PRs 4148 and 4183. llvm-svn: 71448
* Upgrade this example to new-style syntax.Dan Gohman2009-05-111-5/+5
| | | | llvm-svn: 71447
* Convert a subtract into a negate and an add when it helps x86Dan Gohman2009-05-112-1/+71
| | | | | | address folding. llvm-svn: 71446
* remove some done things: we have nocapture and SROA is smarter.Chris Lattner2009-05-111-77/+13
| | | | llvm-svn: 71443
* add a noteChris Lattner2009-05-111-0/+35
| | | | llvm-svn: 71442
* Reverse a loop that is counting up to a maximum toDale Johannesen2009-05-111-6/+118
| | | | | | | | count down to 0 instead, under very restricted circumstances. Adjust 4 testcases in which this optimization fires. llvm-svn: 71439
* Shrink wrapping in PEI:John Mosby2009-05-111-610/+1066
| | | | | | | | | | | | | | | - reduces _static_ callee saved register spills and restores similar to Chow's original algorithm. - iterative implementation with simple heuristic limits to mitigate compile time impact. - handles placing spills/restores for multi-entry, multi-exit regions in the Machine CFG without splitting edges. - passes test-suite in LLCBETA mode. Added contains() method to ADT/SparseBitVector. llvm-svn: 71438
OpenPOWER on IntegriCloud