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path: root/include/llvm/CodeGen/LinkAllCodegenComponents.h
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* Move the scheduler constructor functions to SchedulerRegistry.h, toDan Gohman2008-11-241-1/+1
| | | | | | | | simplify header dependencies for front-ends that just want to choose a scheduler and don't need all the scheduling machinery declarations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59978 91177308-0d34-0410-b5e6-96231b3b80d8
* Experimental post-pass scheduling support. Post-pass schedulingDan Gohman2008-11-191-1/+1
| | | | | | | | | | | | | | | | | | is currently off by default, and can be enabled with -disable-post-RA-scheduler=false. This doesn't have a significant impact on most code yet because it doesn't yet do anything to address anti-dependencies and it doesn't attempt to disambiguate memory references. Also, several popular targets don't have pipeline descriptions yet. The majority of the changes here are splitting the SelectionDAG-specific code out of ScheduleDAG, so that ScheduleDAG can be moved to libLLVMCodeGen.a. The interface between ScheduleDAG-using code and the rest of the scheduling code is somewhat rough and will evolve. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59676 91177308-0d34-0410-b5e6-96231b3b80d8
* Change the scheduler accessor methods to accept an explicit TargetMachineDan Gohman2008-11-111-5/+5
| | | | | | | | argument instead of taking the SelectionDAG's TargetMachine. This is needed for some upcoming scheduler changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59055 91177308-0d34-0410-b5e6-96231b3b80d8
* A Partitioned Boolean Quadratic Programming (PBQP) based register allocator.Evan Cheng2008-10-021-0/+1
| | | | | | | Contributed by Lang Hames. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56959 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a new "fast" scheduler. This is currently basically just aDan Gohman2008-09-181-0/+1
| | | | | | | | | | | | | | | | | copy of the BURRList scheduler, but with several parts ripped out, such as backtracking, online topological sort maintenance (needed by backtracking), the priority queue, and Sethi-Ullman number computation and maintenance (needed by the priority queue). As a result of all this, it generates somewhat lower quality code, but that's its tradeoff for running about 30% faster than list-burr in -fast mode in many cases. This is somewhat experimental. Moving forward, major pieces of this can be refactored with pieces in common with ScheduleDAGRRList.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56307 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a new MachineInstr-level DCE pass. It is very simple, and is intended toDan Gohman2008-09-171-0/+2
| | | | | | | be used with fast-isel. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56268 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename some GC classes so that their roll will hopefully be clearer.Gordon Henriksen2008-08-171-2/+2
| | | | | | | | | | | | | | | | | | In particular, Collector was confusing to implementors. Several thought that this compile-time class was the place to implement their runtime GC heap. Of course, it doesn't even exist at runtime. Specifically, the renames are: Collector -> GCStrategy CollectorMetadata -> GCFunctionInfo CollectorModuleMetadata -> GCModuleInfo CollectorRegistry -> GCRegistry Function::getCollector -> getGC (setGC, hasGC, clearGC) Several accessors and nested types have also been renamed to be consistent. These changes should be obvious. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54899 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix merge errorAnton Korobeynikov2008-08-171-1/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54891 91177308-0d34-0410-b5e6-96231b3b80d8
* Factor GC metadata table assembly generation out of Collector in preparation ↵Gordon Henriksen2008-08-171-1/+2
| | | | | | for splitting AsmPrinter into its own library. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54881 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not use computationally expensive scheduling heuristics with -fast.Evan Cheng2008-07-011-4/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52971 91177308-0d34-0410-b5e6-96231b3b80d8
* Setting GlobalDirective in TargetAsmInfo by default rather thanGordon Henriksen2008-01-071-0/+1
| | | | | | | | providing a misleading facility. It's used once in the MIPS backend and hardcoded as "\t.globl\t" everywhere else. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45676 91177308-0d34-0410-b5e6-96231b3b80d8
* With this patch, the LowerGC transformation becomes theGordon Henriksen2008-01-071-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ShadowStackCollector, which additionally has reduced overhead with no sacrifice in portability. Considering a function @fun with 8 loop-local roots, ShadowStackCollector introduces the following overhead (x86): ; shadowstack prologue movl L_llvm_gc_root_chain$non_lazy_ptr, %eax movl (%eax), %ecx movl $___gc_fun, 20(%esp) movl $0, 24(%esp) movl $0, 28(%esp) movl $0, 32(%esp) movl $0, 36(%esp) movl $0, 40(%esp) movl $0, 44(%esp) movl $0, 48(%esp) movl $0, 52(%esp) movl %ecx, 16(%esp) leal 16(%esp), %ecx movl %ecx, (%eax) ; shadowstack loop overhead (none) ; shadowstack epilogue movl 48(%esp), %edx movl %edx, (%ecx) ; shadowstack metadata .align 3 ___gc_fun: # __gc_fun .long 8 .space 4 In comparison to LowerGC: ; lowergc prologue movl L_llvm_gc_root_chain$non_lazy_ptr, %eax movl (%eax), %ecx movl %ecx, 48(%esp) movl $8, 52(%esp) movl $0, 60(%esp) movl $0, 56(%esp) movl $0, 68(%esp) movl $0, 64(%esp) movl $0, 76(%esp) movl $0, 72(%esp) movl $0, 84(%esp) movl $0, 80(%esp) movl $0, 92(%esp) movl $0, 88(%esp) movl $0, 100(%esp) movl $0, 96(%esp) movl $0, 108(%esp) movl $0, 104(%esp) movl $0, 116(%esp) movl $0, 112(%esp) ; lowergc loop overhead leal 44(%esp), %eax movl %eax, 56(%esp) leal 40(%esp), %eax movl %eax, 64(%esp) leal 36(%esp), %eax movl %eax, 72(%esp) leal 32(%esp), %eax movl %eax, 80(%esp) leal 28(%esp), %eax movl %eax, 88(%esp) leal 24(%esp), %eax movl %eax, 96(%esp) leal 20(%esp), %eax movl %eax, 104(%esp) leal 16(%esp), %eax movl %eax, 112(%esp) ; lowergc epilogue movl 48(%esp), %edx movl %edx, (%ecx) ; lowergc metadata (none) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45670 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't attribute in file headers anymore. See llvmdev for theChris Lattner2007-12-291-2/+2
| | | | | | | | discussion of this change. Boy are my fingers tired. ;-) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45411 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove simple scheduler.Evan Cheng2007-10-011-3/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42499 91177308-0d34-0410-b5e6-96231b3b80d8
* Pluggable coalescers inplementation.David Greene2007-09-061-0/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41743 91177308-0d34-0410-b5e6-96231b3b80d8
* It's not necessary to do rounding for alloca operations when the requestedDan Gohman2007-07-181-0/+48
alignment is equal to the stack alignment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
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