Improved tracking of value number kills. VN kills are now represented
authorLang Hames <lhames@gmail.com>
Thu, 9 Jul 2009 03:57:02 +0000 (03:57 +0000)
committerLang Hames <lhames@gmail.com>
Thu, 9 Jul 2009 03:57:02 +0000 (03:57 +0000)
commitffd1326ff8dfc652a8026c3faebf55bbba7c32c7
treea55447fb0b489320a44a07f28e10683915cecf61
parent482fa0f2bcfca5274b14c808526c8ae4fe97007d
Improved tracking of value number kills. VN kills are now represented
as an (index,bool) pair. The bool flag records whether the kill is a
PHI kill or not. This code will be used to enable splitting of live
intervals containing PHI-kills.

A slight change to live interval weights introduced an extra spill
into lsr-code-insertion (outside the critical sections). The test
condition has been updated to reflect this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75097 91177308-0d34-0410-b5e6-96231b3b80d8
include/llvm/CodeGen/LiveInterval.h
include/llvm/CodeGen/LiveIntervalAnalysis.h
lib/CodeGen/LiveInterval.cpp
lib/CodeGen/LiveIntervalAnalysis.cpp
lib/CodeGen/PreAllocSplitting.cpp
lib/CodeGen/SimpleRegisterCoalescing.cpp
lib/CodeGen/Spiller.cpp
lib/CodeGen/StrongPHIElimination.cpp
test/CodeGen/ARM/lsr-code-insertion.ll