llvm-project

Commit Graph

Author	SHA1	Message	Date
Dan Gohman	64b5d0f468	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. llvm-svn: 86871	2009-11-11 19:48:59 +00:00
Evan Cheng	50bc004b67	Fix tests. llvm-svn: 85723	2009-11-01 18:13:29 +00:00
Evan Cheng	6f29ad9170	Use cbz and cbnz instructions. llvm-svn: 85698	2009-10-31 23:46:45 +00:00

Author

SHA1

Message

Date

Dan Gohman

64b5d0f468

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.

llvm-svn: 86871

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

Evan Cheng

50bc004b67

Fix tests.

llvm-svn: 85723

2009-11-01 18:13:29 +00:00

Evan Cheng

6f29ad9170

Use cbz and cbnz instructions.

llvm-svn: 85698

2009-10-31 23:46:45 +00:00

3 Commits