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path: root/lib/CodeGen/SimpleRegisterCoalescing.h
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2008-04-16After reading memory that's already freed.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49810 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-10Add comment.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49469 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-09- More aggressively coalescing away copies whose source is defined by an ↵Evan Cheng
implicit_def. - Added insert_subreg coalescing support. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49448 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-03- Turn copies of implicit_def into implicit_def instructions.Evan Cheng
- Be smarter about coalescing copies from implicit_def. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49168 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-18Rewrite code that propagate isDead information after a dead copy is ↵Evan Cheng
coalesced. This remove some ugly spaghetti code and fixed a number of subtle bugs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48490 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-10- Fix a subtle bug in RemoveCopyByCommutingDef. ALR is the live range where ↵Evan Cheng
the source is defined; BLR is the live range which is defined by the copy. If ALR and BLR overlaps and end of BLR extends beyond end of ALR, e.g. A = or A, B ... B = A ... C = A<kill> ... = B then do not add kills of A to the newly created B interval. - Also fix some kill info update bug. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48141 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-05Fix a coalescer bug wrt how dead copy interval is shortened.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47966 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-05Refactor code. Remove duplicated functions that basically do the same thing asEvan Cheng
findRegisterUseOperandIdx, findRegisterDefOperandIndx. Fix some naming inconsistencies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47927 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-29No need for coalescer to update kills. Only copies are coalesced and those ↵Evan Cheng
instructions will be deleted. Doh. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47749 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-16Refactor some code; check if commuteInstruction is able to commute the ↵Evan Cheng
instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47208 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-15- Removing the infamous r2rMap_ and rep() method. Now the coalescer will updateEvan Cheng
register defs and uses after each successful coalescing. - Also removed a number of hacks and fixed some subtle kill information bugs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47167 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13Initial support for copy elimination by commuting its definition MI.Evan Cheng
PR1877. A3 = op A2 B0<kill> ... B1 = A3 <- this copy ... = op A3 <- more uses ==> B2 = op B0 A2<kill> ... B1 = B2 <- now an identify copy ... = op B2 <- more uses This speeds up FreeBench/neural by 29%, Olden/bh by 12%, oopack_v1p8 by 53%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47046 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-10Rename MRegisterInfo to TargetRegisterInfo.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46930 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29Remove attribution from file headers, per discussion on llvmdev.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-14Add explicit keywords, and fix a minor typo that they uncovered.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45034 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11Switch over to MachineLoopInfo.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44838 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-06First step towards moving the coalescer to priority_queue based machinery.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43764 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-05Move SimpleRegisterCoalescing.h to lib/CodeGen since there is now a commonEvan Cheng
register coalescer interface: RegisterCoalescing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43714 91177308-0d34-0410-b5e6-96231b3b80d8
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