diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2017-01-02 19:17:04 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2017-01-02 19:17:04 +0000 |
| commit | b915e9e0fc85ba6f398b3fab0db6a81a8913af94 (patch) | |
| tree | 98b8f811c7aff2547cab8642daf372d6c59502fb /lib/CodeGen/MachineCSE.cpp | |
| parent | 6421cca32f69ac849537a3cff78c352195e99f1b (diff) | |
Notes
Diffstat (limited to 'lib/CodeGen/MachineCSE.cpp')
| -rw-r--r-- | lib/CodeGen/MachineCSE.cpp | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/lib/CodeGen/MachineCSE.cpp b/lib/CodeGen/MachineCSE.cpp index 1209f73d9601..0766f465456c 100644 --- a/lib/CodeGen/MachineCSE.cpp +++ b/lib/CodeGen/MachineCSE.cpp @@ -177,8 +177,7 @@ MachineCSE::isPhysDefTriviallyDead(unsigned Reg, unsigned LookAheadLeft = LookAheadLimit; while (LookAheadLeft) { // Skip over dbg_value's. - while (I != E && I->isDebugValue()) - ++I; + I = skipDebugInstructionsForward(I, E); if (I == E) // Reached end of block, register is obviously dead. @@ -227,7 +226,7 @@ bool MachineCSE::hasLivePhysRegDefUses(const MachineInstr *MI, if (TargetRegisterInfo::isVirtualRegister(Reg)) continue; // Reading constant physregs is ok. - if (!MRI->isConstantPhysReg(Reg, *MBB->getParent())) + if (!MRI->isConstantPhysReg(Reg)) for (MCRegAliasIterator AI(Reg, TRI, true); AI.isValid(); ++AI) PhysRefs.insert(*AI); } @@ -346,7 +345,7 @@ bool MachineCSE::isCSECandidate(MachineInstr *MI) { // Okay, this instruction does a load. As a refinement, we allow the target // to decide whether the loaded value is actually a constant. If so, we can // actually use it as a load. - if (!MI->isInvariantLoad(AA)) + if (!MI->isDereferenceableInvariantLoad(AA)) // FIXME: we should be able to hoist loads with no other side effects if // there are no other instructions which can change memory in this loop. // This is a trivial form of alias analysis. |