Dan Gohman a70dca156f Factor out LiveIntervalAnalysis' code to determine whether an instruction ...

is trivially rematerializable and integrate it into
TargetInstrInfo::isTriviallyReMaterializable. This way, all places that
need to know whether an instruction is rematerializable will get the
same answer.

This enables the useful parts of the aggressive-remat option by
default -- using AliasAnalysis to determine whether a memory location
is invariant, and removes the questionable parts -- rematting operations
with virtual register inputs that may not be live everywhere.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83687 91177308-0d34-0410-b5e6-96231b3b80d8

2009-10-09 23:27:56 +00:00

..

llvm

Factor out LiveIntervalAnalysis' code to determine whether an instruction

2009-10-09 23:27:56 +00:00

llvm-c

Add C API calls for building FNeg operations. Patch by KS Sreeram!

2009-09-28 21:51:41 +00:00