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path: root/lib/CodeGen/Passes.cpp
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* reverting r150565. Premature push.Andrew Trick2012-02-15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150566 91177308-0d34-0410-b5e6-96231b3b80d8
* Move PostRAMachineLICM into MachineLateOptimization. It now runs after PEI!Andrew Trick2012-02-15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150565 91177308-0d34-0410-b5e6-96231b3b80d8
* Allow CodeGen (llc) command line options to work as expected.Andrew Trick2012-02-15
| | | | | | | | | | | | | | | | | | | | | | | | The llc command line options for enabling/disabling passes are local to CodeGen/Passes.cpp. This patch associates those options with standard pass IDs so they work regardless of how the target configures the passes. A target has two ways of overriding standard passes: 1) Redefine the pass pipeline (override TargetPassConfig::add%Stage) 2) Replace or suppress individiual passes with TargetPassConfig::substitutePass. In both cases, the command line options associated with the pass override the target default. For example, say a target wants to disable machine instruction scheduling by default: - The target calls disablePass(MachineSchedulerID) but otherwise does not override any TargetPassConfig methods. - Without any llc options, no scheduler is run. - With -enable-misched, the standard machine scheduler is run and honors the -misched=... flag to select the scheduler variant, which may be used for performance evaluation or testing. Sorry overridePass is ugly. I haven't thought of a better way without replacing the cl::opt framework. I hope to do that one day... I haven't figured out why CodeGen uses char& for pass IDs. AnalysisID is much easier to use and less bug prone. I'm using it wherever I can for internal implementation. Maybe later we can change the global pass ID definitions as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150563 91177308-0d34-0410-b5e6-96231b3b80d8
* Added TargetPassConfig::disablePass/substitutePass as a general mechanism to ↵Andrew Trick2012-02-15
| | | | | | override specific passes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150562 91177308-0d34-0410-b5e6-96231b3b80d8
* Add TargetPassConfig hooks for scheduling/bundling.Andrew Trick2012-02-11
| | | | | | | | | In case the MachineScheduling pass I'm working on doesn't work well for another target, they can completely override it. This also adds a hook immediately after the RegAlloc pass to cleanup immediately after vregs go away. We may want to fold it into the postRA hook later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150298 91177308-0d34-0410-b5e6-96231b3b80d8
* comment grammarAndrew Trick2012-02-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150233 91177308-0d34-0410-b5e6-96231b3b80d8
* RegAlloc superpass: includes phi elimination, coalescing, and scheduling.Andrew Trick2012-02-10
| | | | | | | | | | | | | | | | Creates a configurable regalloc pipeline. Ensure specific llc options do what they say and nothing more: -reglloc=... has no effect other than selecting the allocator pass itself. This patch introduces a new umbrella flag, "-optimize-regalloc", to enable/disable the optimizing regalloc "superpass". This allows for example testing coalscing and scheduling under -O0 or vice-versa. When a CodeGen pass requires the MachineFunction to have a particular property, we need to explicitly define that property so it can be directly queried rather than naming a specific Pass. For example, to check for SSA, use MRI->isSSA, not addRequired<PHIElimination>. CodeGen transformation passes are never "required" as an analysis ProcessImplicitDefs does not require LiveVariables. We have a plan to massively simplify some of the early passes within the regalloc superpass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150226 91177308-0d34-0410-b5e6-96231b3b80d8
* Improve TargetPassConfig. No intended functionality.Andrew Trick2012-02-09
| | | | | | | Split CodeGen into stages. Distinguish between optimization and correctness. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150122 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: MachineLICM.Andrew Trick2012-02-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150099 91177308-0d34-0410-b5e6-96231b3b80d8
* Move pass configuration out of pass constructors: StackSlotColoring.Andrew Trick2012-02-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150097 91177308-0d34-0410-b5e6-96231b3b80d8
* Move pass configuration out of pass constructors: PostRAScheduler.Andrew Trick2012-02-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150096 91177308-0d34-0410-b5e6-96231b3b80d8
* Move pass configuration out of pass constructors: BranchFolderPassAndrew Trick2012-02-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150095 91177308-0d34-0410-b5e6-96231b3b80d8
* Added TargetPassConfig::setOptAndrew Trick2012-02-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150093 91177308-0d34-0410-b5e6-96231b3b80d8
* Added Pass::createPass(ID) to handle pass configuration by IDAndrew Trick2012-02-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150092 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
* TargetPassConfig: confine the MC configuration to TargetMachine.Andrew Trick2012-02-04
| | | | | | | | | | Passes prior to instructon selection are now split into separate configurable stages. Header dependencies are simplified. The bulk of this diff is simply removal of the silly DisableVerify flags. Sorry for the target header churn. Attempting to stabilize them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149754 91177308-0d34-0410-b5e6-96231b3b80d8
* Move TargetPassConfig implementation into Passes.cppAndrew Trick2012-02-04
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149753 91177308-0d34-0410-b5e6-96231b3b80d8
* Make TargetPassConfig an ImmutablePass so CodeGenPasses can query optionsAndrew Trick2012-02-04
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149752 91177308-0d34-0410-b5e6-96231b3b80d8
* Delete the linear scan register allocator.Jakob Stoklund Olesen2011-11-12
| | | | | | | | | RegAllocGreedy has been the default for six months now. Deleting RegAllocLinearScan makes it possible to also delete VirtRegRewriter and clean up the spiller code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144475 91177308-0d34-0410-b5e6-96231b3b80d8
* Update comment.Jakob Stoklund Olesen2011-04-30
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* Use a greedy algorithm for allocating registers.Jakob Stoklund Olesen2011-04-30
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* Force the greedy register allocator to be linked alongside linear scan.Jakob Stoklund Olesen2011-04-19
| | | | | | This means that the new register allocator can be used with 'clang -mllvm -regalloc=greedy'. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129764 91177308-0d34-0410-b5e6-96231b3b80d8
* Use the fast register allocator by default for -O0 builds.Jakob Stoklund Olesen2010-06-03
| | | | | | This affects both llvm-gcc and clang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105372 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a -regalloc=default option that chooses a register allocator based on the -OJakob Stoklund Olesen2010-05-27
| | | | | | | | | optimization level. This only really affects llc for now because both the llvm-gcc and clang front ends override the default register allocator. I intend to remove that code later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104904 91177308-0d34-0410-b5e6-96231b3b80d8
* Uniformize the way these options are printed. Requested byDuncan Sands2010-02-18
| | | | | | | Russell Wallace. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96580 91177308-0d34-0410-b5e6-96231b3b80d8
* Clean up the use of static and anonymous namespaces. This turned upDan Gohman2008-05-13
| | | | | | | | several things that were neither in an anonymous namespace nor static but not intended to be global. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51017 91177308-0d34-0410-b5e6-96231b3b80d8
* Make several variable declarations static.Dan Gohman2008-05-06
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* Remove attribution from file headers, per discussion on llvmdev.Chris Lattner2007-12-29
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* *** empty log message ***Bill Wendling2006-11-16
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* Work around a bug in gcc 3.3.5, reported by a userChris Lattner2006-08-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29489 91177308-0d34-0410-b5e6-96231b3b80d8
* Final polish on machine pass registries.Jim Laskey2006-08-02
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* 1. Change use of "Cache" to "Default".Jim Laskey2006-08-01
| | | | | | | | | | | | 2. Added argument to instruction scheduler creators so the creators can do special things. 3. Repaired target hazard code. 4. Misc. More to follow. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29450 91177308-0d34-0410-b5e6-96231b3b80d8
* Introducing plugable register allocators and instruction schedulers.Jim Laskey2006-08-01
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* Working toward registration of register allocators.Jim Laskey2006-07-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29360 91177308-0d34-0410-b5e6-96231b3b80d8
* Reduce number of exported symbolsAndrew Lenharth2006-07-20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29220 91177308-0d34-0410-b5e6-96231b3b80d8
* Alkis agrees that that iterative scan allocator isn't going to be worked onChris Lattner2005-10-24
| | | | | | | in the future, remove it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23952 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove trailing whitespaceMisha Brukman2005-04-21
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21420 91177308-0d34-0410-b5e6-96231b3b80d8
* Changes For Bug 352Reid Spencer2004-09-01
| | | | | | | | | Move include/Config and include/Support into include/llvm/Config, include/llvm/ADT and include/llvm/Support. From here on out, all LLVM public header files must be under include/llvm/. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16137 91177308-0d34-0410-b5e6-96231b3b80d8
* The default has not been 'simple' for AGES!Chris Lattner2004-07-22
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* Make linear scan the defaultChris Lattner2004-07-22
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* Put variable name to a separate line.Alkis Evlogimenos2004-07-22
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* Fit to 80 columns.Alkis Evlogimenos2004-07-22
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* Add Iterative scan register allocator.Alkis Evlogimenos2004-07-21
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15068 91177308-0d34-0410-b5e6-96231b3b80d8
* Linearscan is no longer experimental.Alkis Evlogimenos2004-07-21
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15067 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix IA64 compatibilityChris Lattner2004-07-16
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14866 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a spiller option to llc. A simple spiller will come soon. When we get ↵Alkis Evlogimenos2004-03-01
| | | | | | CFG in the machine code represenation a global spiller will also be possible. Also document the linear scan register allocator but mark it as experimental for now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12062 91177308-0d34-0410-b5e6-96231b3b80d8
* finegrainify namespacificationChris Lattner2003-12-28
| | | | | | | minor cleanups git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10619 91177308-0d34-0410-b5e6-96231b3b80d8
* Merging the linear scan register allocator in trunk. It currently passes ↵Alkis Evlogimenos2003-11-20
| | | | | | most tests under test/Programs/SingleSource/Benchmarks/Shootout so development will continue on trunk. The allocator is not enabled by default. You will need to pass -regallo=linearscan to lli or llc to use it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10103 91177308-0d34-0410-b5e6-96231b3b80d8
* Put all LLVM code into the llvm namespace, as per bug 109.Brian Gaeke2003-11-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8
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