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* Fix PR1735 and Transforms/DeadArgElim/2007-10-18-VarargsReturn.ll byChris Lattner2007-10-181-3/+3
| | | | | | | fixing some obviously broken code :( git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43141 91177308-0d34-0410-b5e6-96231b3b80d8
* Move Split<...>() into DomTreeBase. This should make the #include's of ↵Owen Anderson2007-10-182-2/+0
| | | | | | | | | | | DominatorInternals.h in CodeExtractor and LoopSimplify unnecessary. Hartmut, could you confirm that this fixes the issues you were seeing? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43115 91177308-0d34-0410-b5e6-96231b3b80d8
* Reverting r43070 for now. It's causing llc test failures.Evan Cheng2007-10-171-25/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43103 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not raise free() call that is called through invoke instruction.Devang Patel2007-10-171-0/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43083 91177308-0d34-0410-b5e6-96231b3b80d8
* Fixed linker errors (unresolved externals: split<>(...)) when compiling with ↵Hartmut Kaiser2007-10-172-0/+2
| | | | | | VC++. Please review. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43081 91177308-0d34-0410-b5e6-96231b3b80d8
* Apply "Instead of loading small c string constant, use integer constant ↵Devang Patel2007-10-171-25/+28
| | | | | | directly" transformation while processing load instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43070 91177308-0d34-0410-b5e6-96231b3b80d8
* Use immediate stores.Devang Patel2007-10-161-3/+25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43055 91177308-0d34-0410-b5e6-96231b3b80d8
* Achieve same result but use fewer lines of code.Devang Patel2007-10-151-8/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42985 91177308-0d34-0410-b5e6-96231b3b80d8
* Dest type is always i8 *. This allows some simplification.Devang Patel2007-10-121-33/+12
| | | | | | | | Do not filter memmove. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42930 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a bug in my patch last night that broke InstCombine/2007-10-12-Crash.llChris Lattner2007-10-121-1/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42920 91177308-0d34-0410-b5e6-96231b3b80d8
* eliminate warningGabor Greif2007-10-121-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42892 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix some 80 column violations.Chris Lattner2007-10-121-35/+42
| | | | | | | | | Fix DecomposeSimpleLinearExpr to handle simple constants better. Don't nuke gep(bitcast(allocation)) if the bitcast(allocation) will fold the allocation. This fixes PR1728 and Instcombine/malloc3.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42891 91177308-0d34-0410-b5e6-96231b3b80d8
* Lower memcpy if it makes sense.Devang Patel2007-10-111-0/+46
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42864 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not walk invalid iterator.Devang Patel2007-10-091-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42812 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix bug in updating dominance frontier after loop Devang Patel2007-10-051-27/+117
| | | | | | | | | unswitch when frontier includes basic blocks that are not inside loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42654 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix 80 col violation.Devang Patel2007-10-031-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42591 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor code in a separate method.Devang Patel2007-10-031-33/+46
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42590 91177308-0d34-0410-b5e6-96231b3b80d8
* Use empty() member functions when that's what's being tested for insteadDan Gohman2007-10-034-6/+6
| | | | | | | of comparing begin() and end(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42585 91177308-0d34-0410-b5e6-96231b3b80d8
* Tone down an overzealous optimization.Dale Johannesen2007-10-031-3/+21
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42582 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR1719, by not marking llvm.global.annotations internal.Tanya Lattner2007-10-031-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42578 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR1719, by not marking llvm.noinline internal.Chris Lattner2007-10-031-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42565 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix stride computations for long double arrays.Dale Johannesen2007-10-011-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42508 91177308-0d34-0410-b5e6-96231b3b80d8
* Relax unsafe use check. If there is one unconditional use inside the loop ↵Devang Patel2007-10-011-22/+22
| | | | | | then it is safe to promote value even if there is another conditional use inside the loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42493 91177308-0d34-0410-b5e6-96231b3b80d8
* minor long double related changesDale Johannesen2007-09-281-4/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42439 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't do SRA for unions with long double fields.Dale Johannesen2007-09-281-0/+6
| | | | | | | | Fixes a SWB crash. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42422 91177308-0d34-0410-b5e6-96231b3b80d8
* Handle multiple induction variables.Devang Patel2007-09-251-7/+14
| | | | | | | This fixes PR714. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42309 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not reserve DOM check for GetElementPtrInst.Devang Patel2007-09-251-21/+22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42306 91177308-0d34-0410-b5e6-96231b3b80d8
* doh.. Devang Patel2007-09-251-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42300 91177308-0d34-0410-b5e6-96231b3b80d8
* Add transformation to update loop interation space. Now,Devang Patel2007-09-251-7/+148
| | | | | | | | | | | | | | | | | for (i=A; i<N; i++) { if (i < X && i > Y) do_something(); } is transformed into U=min(N,X); L=max(A,Y); for (i=L;i<U;i++) do_somethihg(); git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42299 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not promote null values because it may be unsafe to do so.Devang Patel2007-09-241-0/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42270 91177308-0d34-0410-b5e6-96231b3b80d8
* explicit keywords.Dan Gohman2007-09-241-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42262 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR1692Devang Patel2007-09-211-3/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42209 91177308-0d34-0410-b5e6-96231b3b80d8
* Add partial caching of non-local memory dependence queries. This provides a ↵Owen Anderson2007-09-211-1/+1
| | | | | | | | | modest speedup for GVN. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42185 91177308-0d34-0410-b5e6-96231b3b80d8
* Update aux. info associated with an instruction before erasing instruction.Devang Patel2007-09-201-12/+12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42180 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't increment invalid iterator.Devang Patel2007-09-201-1/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42178 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix optimization. %x = sub %x, %y does not imply that %y is zero.Nick Lewycky2007-09-201-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42157 91177308-0d34-0410-b5e6-96231b3b80d8
* Avoid unsafe promotion.Devang Patel2007-09-191-9/+41
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42149 91177308-0d34-0410-b5e6-96231b3b80d8
* Improve comment.Duncan Sands2007-09-191-1/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42132 91177308-0d34-0410-b5e6-96231b3b80d8
* A global variable with external weak linkage can be null, whileDuncan Sands2007-09-191-2/+6
| | | | | | | an alias could alias such a global variable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42130 91177308-0d34-0410-b5e6-96231b3b80d8
* Relax loop ExitCondition predicate restriction.Devang Patel2007-09-191-5/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42122 91177308-0d34-0410-b5e6-96231b3b80d8
* Filter loops where split condition's false branch is not empty. For exampleDevang Patel2007-09-191-0/+4
| | | | | | | | | | | | for (int i = 0; i < N; ++i) { if (i == somevalue) dosomething(); else dosomethingelse(); } git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42121 91177308-0d34-0410-b5e6-96231b3b80d8
* Bail out early, before modifying anything.Devang Patel2007-09-191-4/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42120 91177308-0d34-0410-b5e6-96231b3b80d8
* Work is incomplete. Loop is not modified at all right now.Devang Patel2007-09-191-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42119 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR1657Devang Patel2007-09-181-0/+8
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42075 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not eliminate loop when it is invalid to do so. For example,Devang Patel2007-09-171-14/+35
| | | | | | | | | | | | | | | | for(int i = 0; i < N; i++) { if ( i == XYZ) { A; else B; } C; D; } git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42058 91177308-0d34-0410-b5e6-96231b3b80d8
* Skeleton for transformations to truncate loop's iteration space.Devang Patel2007-09-171-2/+198
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42054 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix comment.Devang Patel2007-09-171-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42048 91177308-0d34-0410-b5e6-96231b3b80d8
* Merge DenseMapKeyInfo & DenseMapValueInfo into DenseMapInfoChris Lattner2007-09-173-9/+19
| | | | | | | | Add a new DenseMapInfo::isEqual method to allow clients to redefine the equality predicate used when probing the hash table. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42042 91177308-0d34-0410-b5e6-96231b3b80d8
* Instcombine x-((x/y)*y) into a remainder operator.Dan Gohman2007-09-171-1/+12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42035 91177308-0d34-0410-b5e6-96231b3b80d8
* Factor the trampoline transformation into a subroutine.Duncan Sands2007-09-171-137/+148
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42021 91177308-0d34-0410-b5e6-96231b3b80d8
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