llvm-project

Commit Graph

Author	SHA1	Message	Date
Dan Gohman	43d6830ea0	Nick pointed out that DominanceFrontier and DominanceTree are preserved by setPreservesCFG(). llvm-svn: 82463	2009-09-21 17:54:42 +00:00
Dan Gohman	af57ae3da4	Remove the special-case for constants in PHI nodes; it's not really helpful, and it didn't correctly handle the case of constants input to PHIs for backedges. llvm-svn: 82462	2009-09-21 17:53:35 +00:00
Dan Gohman	0f64d71d99	Add a new pass for doing late hoisting of floating-point and vector constants out of loops. These aren't covered by the regular LICM pass, because in LLVM IR constants don't require separate instructions. They're not always covered by the MachineLICM pass either, because it doesn't know how to unfold folded constant-pool loads. This is somewhat experimental at this point, and off by default. llvm-svn: 82076	2009-09-16 20:25:11 +00:00

Author

SHA1

Message

Date

Dan Gohman

43d6830ea0

Nick pointed out that DominanceFrontier and DominanceTree are preserved

by setPreservesCFG().

llvm-svn: 82463

2009-09-21 17:54:42 +00:00

Dan Gohman

af57ae3da4

Remove the special-case for constants in PHI nodes; it's not really

helpful, and it didn't correctly handle the case of constants input
to PHIs for backedges.

llvm-svn: 82462

2009-09-21 17:53:35 +00:00

Dan Gohman

0f64d71d99

Add a new pass for doing late hoisting of floating-point and vector

constants out of loops. These aren't covered by the regular LICM
pass, because in LLVM IR constants don't require separate
instructions. They're not always covered by the MachineLICM pass
either, because it doesn't know how to unfold folded constant-pool
loads. This is somewhat experimental at this point, and off by
default.

llvm-svn: 82076

2009-09-16 20:25:11 +00:00

3 Commits