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| author | Lang Hames <lhames@gmail.com> | 2009-06-17 21:01:20 +0000 |
|---|---|---|
| committer | Lang Hames <lhames@gmail.com> | 2009-06-17 21:01:20 +0000 |
| commit | 857c4e01f85601cf2084adb860616256ee47c177 (patch) | |
| tree | a5208397ae299b8b8742bf4cfaca34e3db192601 /lib/CodeGen/RegAllocLinearScan.cpp | |
| parent | 559254b69774d751742038309e15aa8b14a8797d (diff) | |
| download | external_llvm-857c4e01f85601cf2084adb860616256ee47c177.zip external_llvm-857c4e01f85601cf2084adb860616256ee47c177.tar.gz external_llvm-857c4e01f85601cf2084adb860616256ee47c177.tar.bz2 | |
VNInfo cleanup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73634 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/RegAllocLinearScan.cpp')
| -rw-r--r-- | lib/CodeGen/RegAllocLinearScan.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/CodeGen/RegAllocLinearScan.cpp b/lib/CodeGen/RegAllocLinearScan.cpp index ec956c2..f7f5dc7 100644 --- a/lib/CodeGen/RegAllocLinearScan.cpp +++ b/lib/CodeGen/RegAllocLinearScan.cpp @@ -358,7 +358,7 @@ unsigned RALinScan::attemptTrivialCoalescing(LiveInterval &cur, unsigned Reg) { return Reg; VNInfo *vni = cur.begin()->valno; - if (!vni->def || vni->def == ~1U || vni->def == ~0U) + if (!vni->def || vni->isUnused() || !vni->isDefAccurate()) return Reg; MachineInstr *CopyMI = li_->getInstructionFromIndex(vni->def); unsigned SrcReg, DstReg, SrcSubReg, DstSubReg, PhysReg; @@ -745,7 +745,7 @@ static void addStackInterval(LiveInterval *cur, LiveStacks *ls_, if (SI.hasAtLeastOneValue()) VNI = SI.getValNumInfo(0); else - VNI = SI.getNextValue(~0U, 0, ls_->getVNInfoAllocator()); + VNI = SI.getNextValue(0, 0, false, ls_->getVNInfoAllocator()); LiveInterval &RI = li_->getInterval(cur->reg); // FIXME: This may be overly conservative. @@ -921,7 +921,7 @@ void RALinScan::assignRegOrStackSlotAtInterval(LiveInterval* cur) // one, e.g. X86::mov32to32_. These move instructions are not coalescable. if (!vrm_->getRegAllocPref(cur->reg) && cur->hasAtLeastOneValue()) { VNInfo *vni = cur->begin()->valno; - if (vni->def && vni->def != ~1U && vni->def != ~0U) { + if (vni->def && !vni->isUnused() && vni->isDefAccurate()) { MachineInstr *CopyMI = li_->getInstructionFromIndex(vni->def); unsigned SrcReg, DstReg, SrcSubReg, DstSubReg; if (CopyMI && |