llvm-6502

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Commit Graph

Author	SHA1	Message	Date
Dan Gohman	ad6af45dc1	Tail merge at any size when there are two potentials blocks and one can be made to fall through into the other. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86909 91177308-0d34-0410-b5e6-96231b3b80d8	2009-11-12 00:39:10 +00:00
Dan Gohman	2210c0bea8	Add support for tail duplication to BranchFolding, and extend tail merging support to handle more cases. - Recognize several cases where tail merging is beneficial even when the tail size is smaller than the generic threshold. - Make use of MachineInstrDesc::isBarrier to help detect non-fallthrough blocks. - Check for and avoid disrupting fall-through edges in more cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86871 91177308-0d34-0410-b5e6-96231b3b80d8	2009-11-11 19:48:59 +00:00

Author

SHA1

Message

Date

Dan Gohman

ad6af45dc1

Tail merge at any size when there are two potentials blocks and one

can be made to fall through into the other.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86909 91177308-0d34-0410-b5e6-96231b3b80d8

2009-11-12 00:39:10 +00:00

Dan Gohman

2210c0bea8

Add support for tail duplication to BranchFolding, and extend

tail merging support to handle more cases.
 - Recognize several cases where tail merging is beneficial even when
   the tail size is smaller than the generic threshold.
 - Make use of MachineInstrDesc::isBarrier to help detect
   non-fallthrough blocks.
 - Check for and avoid disrupting fall-through edges in more cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86871 91177308-0d34-0410-b5e6-96231b3b80d8

2009-11-11 19:48:59 +00:00

2 Commits