summaryrefslogtreecommitdiffstats
path: root/llvm/lib/CodeGen/AllocationOrder.h
Commit message (Collapse)AuthorAgeFilesLines
* Update the file headers across all of the LLVM projects in the monorepoChandler Carruth2019-01-191-4/+3
| | | | | | | | | | | | | | | | | to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
* [RegAlloc, SystemZ] Increase number of LOCRs by passing "hard" regalloc hints.Jonas Paulsson2017-11-101-0/+8
| | | | | | | | | | | | | | | | | | | | * The method getRegAllocationHints() is now of bool type instead of void. If true is returned, regalloc (AllocationOrder) will *only* try to allocate the hints, as opposed to merely trying them before non-hinted registers. * TargetRegisterInfo::getRegAllocationHints() is implemented for SystemZ with an increase in number of LOCRs. In this case, it is desired to force the hints even though there is a slight increase in spilling, because if a non-hinted register would be allocated, the LOCRMux pseudo would have to be expanded with a jump sequence. The LOCR (Load On Condition) SystemZ instruction must have both operands in either the low or high part of the 64 bit register. Reviewers: Quentin Colombet and Ulrich Weigand https://reviews.llvm.org/D36795 llvm-svn: 317879
* Use the range variant of find instead of unpacking begin/endDavid Majnemer2016-08-111-3/+2
| | | | | | | | | If the result of the find is only used to compare against end(), just use is_contained instead. No functionality change is intended. llvm-svn: 278433
* TargetRegisterInfo: Provide a way to check assigned registers in ↵Matthias Braun2015-07-151-1/+3
| | | | | | | | | | getRegAllocationHints() Pass a const reference to LiveRegMatrix to getRegAllocationHints() because some targets can prodive better hints if they can test whether a physreg has been used for register allocation yet. llvm-svn: 242340
* [CodeGen] Reduce visibility of implementation detailsBenjamin Kramer2015-07-011-1/+1
| | | | | | NFC. llvm-svn: 241164
* Canonicalize header guards into a common format.Benjamin Kramer2014-08-131-2/+2
| | | | | | | | | | Add header guards to files that were missing guards. Remove #endif comments as they don't seem common in LLVM (we can easily add them back if we decide they're useful) Changes made by clang-tidy with minor tweaks. llvm-svn: 215558
* Check hint registers for interference only once before evictionsAditya Nandakumar2013-12-051-2/+4
| | | | llvm-svn: 196536
* Revert "Give internal classes hidden visibility."Benjamin Kramer2013-09-111-1/+1
| | | | | | | It works with clang, but GCC has different rules so we can't make all of those hidden. This reverts commit r190534. llvm-svn: 190536
* Give internal classes hidden visibility.Benjamin Kramer2013-09-111-1/+1
| | | | | | Worth 100k on a linux/x86_64 Release+Asserts clang. llvm-svn: 190534
* Limit the search space in RAGreedy::tryEvict().Jakob Stoklund Olesen2013-01-121-0/+15
| | | | | | | When tryEvict() is looking for a cheaper register in the allocation order, skip the tail of too expensive registers when possible. llvm-svn: 172281
* Speed up the AllocationOrder class a bit.Jakob Stoklund Olesen2012-12-041-5/+16
| | | | | | | Allow the central functions to be inlined, and use the argumentless isHint() function when possible. llvm-svn: 169319
* Sort includes for all of the .h files under the 'lib' tree. These wereChandler Carruth2012-12-041-1/+1
| | | | | | | | | | missed in the first pass because the script didn't yet handle include guards. Note that the script is now able to handle all of these headers without manual edits. =] llvm-svn: 169224
* Use the new getRegAllocationHints() hook from AllocationOrder.Jakob Stoklund Olesen2012-12-031-31/+16
| | | | | | | This simplifies the hinting code quite a bit while making the targets easier to write at the same time. llvm-svn: 169173
* Use MCPhysReg for RegisterClassInfo allocation orders.Jakob Stoklund Olesen2012-11-291-3/+5
| | | | | | This saves a bit of memory. llvm-svn: 168852
* Fix old doxygen comment.Jakob Stoklund Olesen2012-01-241-2/+1
| | | | llvm-svn: 148825
* Get allocation orders from RegisterClassInfo when possible.Jakob Stoklund Olesen2011-06-061-1/+18
| | | | | | | | | | | | Only target-dependent hints require callbacks. The RCI allocation order has CSR aliases last according to their order of appearance in the getCalleeSavedRegs list. This can depend on the calling convention. This way, AllocationOrder::next doesn't have to check for reserved registers, and CSRs are always allocated last, even with weird calling conventions. llvm-svn: 132690
* Switch AllocationOrder to using RegisterClassInfo instead of a BitVectorJakob Stoklund Olesen2011-06-031-3/+3
| | | | | | | | | of reserved registers. Use RegisterClassInfo in RABasic as well. This slightly changes som allocation orders because RegisterClassInfo puts CSR aliases last. llvm-svn: 132581
* Try harder to get the hint by preferring to evict hint interference.Jakob Stoklund Olesen2011-02-251-0/+2
| | | | llvm-svn: 126463
* Add an AllocationOrder class that can iterate over the allocatable physicalJakob Stoklund Olesen2010-12-101-0/+54
registers for a given virtual register. Reserved registers are filtered from the allocation order, and any valid hint is returned as the first suggestion. For target dependent hints, a number of arcane target hooks are invoked. llvm-svn: 121497
OpenPOWER on IntegriCloud