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2009-10-30Mention if a block has its address taken in debug output.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85571 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-30Add support for BlockAddress static initializers.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85562 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-30Add a FIXME comment.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85559 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-30Add some comments.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85558 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-30Initial target-independent CodeGen support for BlockAddresses.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85556 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29Between scheduling regions, correctly maintain anti-dep breaking state so ↵David Goodwin
that we don't incorrectly rename registers that span these regions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85537 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29Remove some unnecessary spaces in debug output.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85536 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29Move some code from being emitted as boilerplate duplicated in everyDan Gohman
*ISelDAGToDAG.cpp to being regular code in SelectionDAGISel.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85530 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29Fix a couple of bugs in aggressive anti-dep breaking.David Goodwin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85522 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29Refactor complicated predicate into a separate function.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85519 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29Rename usesCustomDAGSchedInserter to usesCustomInserter, and update aDan Gohman
bunch of associated comments, because it doesn't have anything to do with DAGs or scheduling. This is another step in decoupling MachineInstr emitting from scheduling. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85517 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29Refactor the code for unfolding a load into a separate function.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85515 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29Reapply r85338.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85514 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29When the function is doing dynamic stack realignment, the spill slot will beJim Grosbach
indexed via the stack pointer, even if a frame pointer is present. Update the heuristic to place it nearest the stack pointer in that case, rather than nearest the frame pointer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85474 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29When there is a 2-instruction spill sequence, recordDale Johannesen
the second (store) instruction in SpillSlotToUsesMap consistently. I don't think this matters functionally, but it's cleaner and Evan wants it this way. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85463 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29Don't put in these EH changes.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85460 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29Reverting r85338 for now. It's causing a bootstrap failure on PPC darwin9.Bill Wendling
--- Reverse-merging r85338 into '.': U lib/CodeGen/SimpleRegisterCoalescing.cpp U lib/CodeGen/SimpleRegisterCoalescing.h git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85454 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Reimplement BranchFolding change to avoid tail merging for a 1 instructionBob Wilson
common tail, except when the OptimizeForSize function attribute is present. Radar 7338114. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85441 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28When we generate spill code, then decide we don't needDale Johannesen
to spill after all, we weren't handling 2-instruction spill sequences correctly (PPC Altivec). We need to remove the store in this case. Removing the other instruction(s) would be goodness but is not needed for correctness, and isn't done here. 7331562. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85437 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Make sure we return the right sized type here.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85436 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Revert r85346 change to control tail merging by CodeGenOpt::Level.Bob Wilson
I'm going to redo this using the OptimizeForSize function attribute. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85426 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Make AntiDepReg.h internal.David Goodwin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85412 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Don't call SDNode::isPredecessorOf when it isn't necessary. If the load'sDan Gohman
chains have no users, they can't be predecessors of the condition. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85394 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Simplify this code: if the unfolded load can't be hoisted, just deleteDan Gohman
the new instructions and leave the old one in place. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85393 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Rewrite SelectionDAG::isPredecessorOf to be iterative instead ofDan Gohman
recursive to avoid consuming extraordinary amounts of stack space when processing tall graphs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85369 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Teach MachineLICM to unfold loads from constant memory fromDan Gohman
otherwise unhoistable instructions in order to allow the loads to be hoisted. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85364 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Add a second ValueType argument to isFPImmLegal.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85361 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Mark dead physregdefs dead immediately. This helps MachineSink andDan Gohman
MachineLICM and other things which run before LiveVariables is run. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85360 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Allow constants of different types to share constant pool entriesDan Gohman
if they have compatible encodings. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85359 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28rename indbr -> indirectbr to appease the residents of #llvm.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85351 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27Record CodeGen optimization level in the BranchFolding pass so that we canBob Wilson
use it to control tail merging when there is a tradeoff between performance and code size. When there is only 1 instruction in the common tail, we have been merging. That can be good for code size but is a definite loss for performance. Now we will avoid tail merging in that case when the optimization level is "Aggressive", i.e., "-O3". Radar 7338114. Since the IfConversion pass invokes BranchFolding, it too needs to know the optimization level. Note that I removed the RegisterPass instantiation for IfConversion because it required a default constructor. If someone wants to keep that for some reason, we can add a default constructor with a hard-wired optimization level. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85346 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27Fixed a bug in the coalescer where intervals were occasionally merged ↵Lang Hames
despite a real interference. This fixes rdar://problem/7157961. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85338 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27Update the MachineBasicBlock CFG for an indirect branch.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85325 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27Add CodeGen support for indirect branches.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85323 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27Do not held on to DenseMap slot accross map insertion. The insertion may ↵Devang Patel
cause the map to grow rending the slot invalid. Use this opportunity to use ValueMap instead of DenseMap. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85298 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27don't use stdioChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85296 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27Do away with addLegalFPImmediate. Add a target hook isFPImmLegal which ↵Evan Cheng
returns true if the fp immediate can be natively codegened by target. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85281 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27add enough support for indirect branch for the feature test to passChris Lattner
(assembler,asmprinter, bc reader+writer) and document it. Codegen currently aborts on it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85274 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27pseudosourcevalue is also still using getGlobalContext(), so it isn'tChris Lattner
thread safe either. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85253 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27Add objectsize intrinsic and hook it up through codegen. Doesn'tEric Christopher
do anything than return "I don't know" at the moment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85189 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Remove FreeInst.Victor Hernandez
Remove LowerAllocations pass. Update some more passes to treate free calls just like they were treating FreeInst. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85176 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Allow the aggressive anti-dep breaker to process the same region multiple ↵David Goodwin
times. This is necessary because new anti-dependencies are exposed when "current" ones are broken. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85166 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Define virtual destructor in *.cpp file.David Goodwin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85146 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Add aggressive anti-dependence breaker. Currently it is not the default for ↵David Goodwin
any target. Enable with -break-anti-dependencies=all. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85145 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26When checking whether a def of an aliased register is dead, ask theDan Gohman
machineinstr whether the aliased register is dead, rather than the original register is dead. This allows it to get the correct answer when examining an instruction like this: CALLpcrel32 <ga:foo>, %AL<imp-def>, %EAX<imp-def,dead> where EAX is dead but a subregister of it is still live. This fixes PR5294. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85135 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Break anti-dependence breaking out into its own class.David Goodwin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85127 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26- Revert some changes from 85044, 85045, and 85047 that broke x86_64 tests andEvan Cheng
bootstrapping. It's not safe to leave identity subreg_to_reg and insert_subreg around. - Relax register scavenging to allow use of partially "not-live" registers. It's common for targets to operate on registers where the top bits are undef. e.g. s0 = d0 = insert_subreg d0<undef>, s0, 1 ... = d0 When the insert_subreg is eliminated by the coalescer, the scavenger used to complain. The previous fix was to keep to insert_subreg around. But that's brittle and it's overly conservative when we want to use the scavenger to allocate registers. It's actually legal and desirable for other instructions to use the "undef" part of d0. e.g. s0 = d0 = insert_subreg d0<undef>, s0, 1 ... s1 = = s1 = d0 We probably need add a "partial-undef" marker on machine operand so the machine verifier would not complain. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85091 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Move DataTypes.h to include/llvm/System, update all users. This breaks the lastChandler Carruth
direct inclusion edge from System to Support. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85086 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-25Use isIdentityCopy. Fix a bozo bug (flipped condition) in InvalidateRegDef.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85047 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-25Code clean up.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85046 91177308-0d34-0410-b5e6-96231b3b80d8
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