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path: root/lib/CodeGen/TailDuplication.cpp
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* Create enums for the different attributes.Bill Wendling2012-10-09
| | | | | | | | We use the enums to query whether an Attributes object has that attribute. The opaque layer is responsible for knowing where that specific attribute is stored. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165488 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the `hasFnAttr' method from Function.Bill Wendling2012-09-26
| | | | | | | | The hasFnAttr method has been replaced by querying the Attributes explicitly. No intended functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164725 91177308-0d34-0410-b5e6-96231b3b80d8
* Stop leaking RegScavengers from TailDuplication.Benjamin Kramer2012-06-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158069 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach taildup to update livein set. rdar://11538365Evan Cheng2012-05-30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157663 91177308-0d34-0410-b5e6-96231b3b80d8
* Constrain register classes in TailDup.Jakob Stoklund Olesen2012-05-20
| | | | | | | When rewriting operands, make sure the new registers have a compatible register class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157163 91177308-0d34-0410-b5e6-96231b3b80d8
* Make post-ra tail duplication bundle safe. No test case as recent codegenEvan Cheng2012-02-20
| | | | | | | flow changes have already hidden the bug. rdar://10893812 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150949 91177308-0d34-0410-b5e6-96231b3b80d8
* Codegen pass definition cleanup. No functionality.Andrew Trick2012-02-08
| | | | | | | | | | | | | Moving toward a uniform style of pass definition to allow easier target configuration. Globally declare Pass ID. Globally declare pass initializer. Use INITIALIZE_PASS consistently. Add a call to the initializer from CodeGen.cpp. Remove redundant "createPass" functions and "getPassName" methods. While cleaning up declarations, cleaned up comments (sorry for large diff). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150100 91177308-0d34-0410-b5e6-96231b3b80d8
* Move pass configuration out of pass constructors: TailDuplicate::PreRegAllocAndrew Trick2012-02-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150091 91177308-0d34-0410-b5e6-96231b3b80d8
* Add bundle aware API for querying instruction properties and switch the codeEvan Cheng2011-12-07
| | | | | | | | | | | | | | | generator to it. For non-bundle instructions, these behave exactly the same as the MC layer API. For properties like mayLoad / mayStore, look into the bundle and if any of the bundled instructions has the property it would return true. For properties like isPredicable, only return true if *all* of the bundled instructions have the property. For properties like canFoldAsLoad, isCompare, conservatively return false for bundles. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146026 91177308-0d34-0410-b5e6-96231b3b80d8
* First chunk of MachineInstr bundle support.Evan Cheng2011-12-06
| | | | | | | | | | 1. Added opcode BUNDLE 2. Taught MachineInstr class to deal with bundled MIs 3. Changed MachineBasicBlock iterator to skip over bundled MIs; added an iterator to walk all the MIs 4. Taught MachineBasicBlock methods about bundled MIs git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145975 91177308-0d34-0410-b5e6-96231b3b80d8
* Trim an unneeded header.Jakob Stoklund Olesen2011-08-09
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137184 91177308-0d34-0410-b5e6-96231b3b80d8
* Move most of the pre BB code to TailDuplicateAndUpdate. Change theRafael Espindola2011-07-04
| | | | | | HasIndirectbr variable to be just that. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134371 91177308-0d34-0410-b5e6-96231b3b80d8
* Reduce indentation and fix the count of how many PHIs we have inserted.Rafael Espindola2011-07-04
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134370 91177308-0d34-0410-b5e6-96231b3b80d8
* - Rename TargetInstrDesc, TargetOperandInfo to MCInstrDesc and MCOperandInfo andEvan Cheng2011-06-28
| | | | | | | | | sink them into MC layer. - Added MCInstrInfo, which captures the tablegen generated static data. Chang TargetInstrInfo so it's based off MCInstrInfo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134021 91177308-0d34-0410-b5e6-96231b3b80d8
* SimplifyRafael Espindola2011-06-24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133798 91177308-0d34-0410-b5e6-96231b3b80d8
* Now that bb with phis are not considered simple, duplicate them even ifRafael Espindola2011-06-24
| | | | | | we cannot duplicate to every predecessor. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133797 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify now that blocks with phis are not considered simple.Rafael Espindola2011-06-24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133793 91177308-0d34-0410-b5e6-96231b3b80d8
* Move more logic to shouldTailDuplicate and only duplicate regular bb beforeRafael Espindola2011-06-23
| | | | | | | | | | register allocation if it has a indirectbr or if we can duplicate it to every predecessor. This fixes the SingleSource/Benchmarks/Shootout-C++/matrix.cpp regression but keeps the previous improvements to sunspider. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133682 91177308-0d34-0410-b5e6-96231b3b80d8
* Reenable tail duplication of bb with just an unconditional jump, butRafael Espindola2011-06-22
| | | | | | don't remove blocks that have their address taken. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133659 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r133607. This is causing failures in the Clang gccTestSuite.Chad Rosier2011-06-22
| | | | | | Specifically, gcc.c-torture/compile/pr21356.c. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133646 91177308-0d34-0410-b5e6-96231b3b80d8
* Reenable the optimization added in 133415, but change the definition of a ↵Rafael Espindola2011-06-22
| | | | | | | | | "simple" bb to be one with only one unconditional branch and no phis. Duplicating the phis in this case is possible, but requeres liveness analysis or breaking edges. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133607 91177308-0d34-0410-b5e6-96231b3b80d8
* Disable again.Rafael Espindola2011-06-20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133446 91177308-0d34-0410-b5e6-96231b3b80d8
* Re enable 133415 with two fixesRafael Espindola2011-06-20
| | | | | | | | * Don't introduce a duplicated bb in the CFG * When making a branch unconditional, clear the PredCond array so that it is really unconditional. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133432 91177308-0d34-0410-b5e6-96231b3b80d8
* Disable the logic added by rafael in commit 133415 to see if it brings theDuncan Sands2011-06-20
| | | | | | | | | dragonegg buildbots back to life. Original commit message: Teach early dup how to duplicate basic blocks with one successor and only phi instructions into more complex blocks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133430 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix MSVC build. next() function already exists in the MSVC headers. This ↵Francois Pichet2011-06-20
| | | | | | create a overload conflict. Make sure we pick up the llvm one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133416 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach early dup how to duplicate basic blocks with one successor and only ↵Rafael Espindola2011-06-20
| | | | | | | | phi instructions into more complex blocks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133415 91177308-0d34-0410-b5e6-96231b3b80d8
* Two fixes relating to debug value:Rafael Espindola2011-06-17
| | | | | | | | * We should change the generated code because of a debug use. * Avoid creating debug uses of undef, as they become a kill. Test to follow. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133255 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable early duplication of small blocks. There are still improvements toRafael Espindola2011-06-17
| | | | | | be made, but this is already a win. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133240 91177308-0d34-0410-b5e6-96231b3b80d8
* Removed tabs. Also fixed my editor...Rafael Espindola2011-06-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132857 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove duplicated test.Rafael Espindola2011-06-10
| | | | | | Thanks Bob Wilson for noticing it! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132851 91177308-0d34-0410-b5e6-96231b3b80d8
* Make the optional verification step more strict.Rafael Espindola2011-06-09
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132822 91177308-0d34-0410-b5e6-96231b3b80d8
* Avoid a gcc warning about multiline comments.Rafael Espindola2011-06-09
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132821 91177308-0d34-0410-b5e6-96231b3b80d8
* On last fix to the early tail duplication.Rafael Espindola2011-06-09
| | | | | | | | With this I am able to bootstrap clang with early tail duplication enabled for any small bb and setting tail-dup-size to a relatively large value(8) to stress this code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132816 91177308-0d34-0410-b5e6-96231b3b80d8
* Also consider phi nodes when deciding if a register is live out.Rafael Espindola2011-06-09
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132814 91177308-0d34-0410-b5e6-96231b3b80d8
* AnalyzeBranch modifies the bb, but we don't want to modify a bb withRafael Espindola2011-06-09
| | | | | | eh edges. Swap the order of the checks to avoid it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132806 91177308-0d34-0410-b5e6-96231b3b80d8
* A PHI in this basic block is a use in another basic block.Rafael Espindola2011-06-09
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132805 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor some checks into shouldTailDuplicate. Update comments.Rafael Espindola2011-06-09
| | | | | | No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132798 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix count.Rafael Espindola2011-06-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132749 91177308-0d34-0410-b5e6-96231b3b80d8
* Count how many phis we are creating.Rafael Espindola2011-06-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132748 91177308-0d34-0410-b5e6-96231b3b80d8
* Update comments.Evan Cheng2011-02-04
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124843 91177308-0d34-0410-b5e6-96231b3b80d8
* Respect the -tail-dup-size command line option even when optimizing for size.Jakob Stoklund Olesen2011-01-30
| | | | | | | This is similar to the -unroll-threshold option. There should be no change in behavior when -tail-dup-size is not explicit on the llc command line. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124564 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-apply r124518 with fix. Watch out for invalidated iterator.Evan Cheng2011-01-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124526 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r124518. It broke Linux self-host.Evan Cheng2011-01-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124522 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-commit r124462 with fixes. Tail recursion elim will now dup ret into ↵Evan Cheng2011-01-29
| | | | | | unconditional predecessor to enable TCE on demand. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124518 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r124462. There are a few big regressions that I need to fix first.Evan Cheng2011-01-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124478 91177308-0d34-0410-b5e6-96231b3b80d8
* - Stop simplifycfg from duplicating "ret" instructions into unconditionalEvan Cheng2011-01-28
| | | | | | | | | branches. PR8575, rdar://5134905, rdar://8911460. - Allow codegen tail duplication to dup small return blocks after register allocation is done. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124462 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify a bunch of isVirtualRegister() and isPhysicalRegister() logic.Jakob Stoklund Olesen2011-01-10
| | | | | | | | These functions not longer assert when passed 0, but simply return false instead. No functional change intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123155 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply r110396, with fixes to appease the Linux buildbot gods.Owen Anderson2010-08-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110460 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r110396 to fix buildbots.Owen Anderson2010-08-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110410 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't use PassInfo* as a type identifier for passes. Instead, use the ↵Owen Anderson2010-08-05
| | | | | | | | | address of the static ID member as the sole unique type identifier. Clean up APIs related to this change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110396 91177308-0d34-0410-b5e6-96231b3b80d8
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