llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-17 21:35:07 +00:00

History

Jakob Stoklund Olesen 0ab7103e06 Make the hasPHIKills flag a computed property.

The VNInfo::HAS_PHI_KILL is only half supported. We precompute it in
LiveIntervalAnalysis, but it isn't properly updated by live range
splitting and functions like shrinkToUses().

It is only used in one place: RegisterCoalescer::removeCopyByCommutingDef().

This patch changes that function to use a new LiveIntervals::hasPHIKill()
function that computes the flag for a given value number.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161254 91177308-0d34-0410-b5e6-96231b3b80d8

2012-08-03 20:10:24 +00:00

Analysis

Implement the block_iterator of Region based on df_iterator.

2012-08-02 14:20:02 +00:00