Commit Graph

9 Commits

Author SHA1 Message Date
Andrew Trick
87896d9368 Recommit r129383. PreRA scheduler heuristic fixes: VRegCycle, TokenFactor latency.
Additional fixes:
Do something reasonable for subtargets with generic
itineraries by handle node latency the same as for an empty
itinerary. Now nodes default to unit latency unless an itinerary
explicitly specifies a zero cycle stage or it is a TokenFactor chain.

Original fixes:
UnitsSharePred was a source of randomness in the scheduler: node
priority depended on the queue data structure. I rewrote the recent
VRegCycle heuristics to completely replace the old heuristic without
any randomness. To make the ndoe latency adjustments work, I also
needed to do something a little more reasonable with TokenFactor. I
gave it zero latency to its consumers and always schedule it as low as
possible.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129421 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-13 00:38:32 +00:00
Jim Grosbach
f27ca42552 update tests for smarter BIC usage
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108846 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20 16:16:48 +00:00
Evan Cheng
c36b5b9730 PR7503: uxtb16 is not available for ARMv7-M. Patch by Brian G. Lucas.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107122 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-29 05:38:36 +00:00
Bob Wilson
789fef987f PR7458: Try commuting Thumb2 instruction operands to put them into 2-address
form so they can be narrowed to 16-bit instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106762 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-24 16:50:20 +00:00
Jim Grosbach
29402132f3 Cleanup of ARMv7M support. Move hardware divide and Thumb2 extract/pack
instructions to subtarget features and update tests to reflect.
PR5717.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103136 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-05 23:44:43 +00:00
Johnny Chen
267124cff2 Drop the ".w" qualifier for t2UXTB16* instructions as there is no 16-bit version
of either sxtb16 or uxtb16, and the unified syntax does not specify ".w".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97760 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04 22:24:41 +00:00
Jim Grosbach
1187285e90 Convert to FileCheck
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89007 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 00:20:26 +00:00
Dan Gohman
fce288fc91 Eliminate more uses of llvm-as and llvm-dis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81293 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-09 00:09:15 +00:00
Evan Cheng
d27c9fc403 Add thumb2 sign / zero extend with rotate instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74755 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-03 01:43:10 +00:00