Turn neon reg-reg moves fixup code into separate pass. This should reduce the compile time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85850 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMBaseInstrInfo.cpp b/lib/Target/ARM/ARMBaseInstrInfo.cpp
index 80961bf..bc49197 100644
--- a/lib/Target/ARM/ARMBaseInstrInfo.cpp
+++ b/lib/Target/ARM/ARMBaseInstrInfo.cpp
@@ -658,39 +658,8 @@
// Always use neon reg-reg move if source or dest is NEON-only regclass.
BuildMI(MBB, I, DL, get(ARM::VMOVD), DestReg).addReg(SrcReg);
} else if (DestRC == ARM::DPRRegisterClass) {
- const ARMBaseRegisterInfo* TRI = &getRegisterInfo();
-
- // If we do not found an instruction defining the reg, this means the
- // register should be live-in for this BB. It's always to better to use
- // NEON reg-reg moves.
- unsigned Domain = ARMII::DomainNEON;
-
- // Find the Machine Instruction which defines SrcReg.
- if (!MBB.empty()) {
- MachineBasicBlock::iterator J = (I == MBB.begin() ? I : prior(I));
- while (J != MBB.begin()) {
- if (J->modifiesRegister(SrcReg, TRI))
- break;
- --J;
- }
-
- if (J->modifiesRegister(SrcReg, TRI)) {
- Domain = J->getDesc().TSFlags & ARMII::DomainMask;
- // Instructions in general domain are subreg accesses.
- // Map them to NEON reg-reg moves.
- if (Domain == ARMII::DomainGeneral)
- Domain = ARMII::DomainNEON;
- }
- }
-
- if ((Domain & ARMII::DomainNEON) && getSubtarget().hasNEON()) {
- BuildMI(MBB, I, DL, get(ARM::VMOVQ), DestReg).addReg(SrcReg);
- } else {
- assert((Domain & ARMII::DomainVFP ||
- !getSubtarget().hasNEON()) && "Invalid domain!");
- AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::FCPYD), DestReg)
- .addReg(SrcReg));
- }
+ AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::FCPYD), DestReg)
+ .addReg(SrcReg));
} else if (DestRC == ARM::QPRRegisterClass ||
DestRC == ARM::QPR_VFP2RegisterClass) {
BuildMI(MBB, I, DL, get(ARM::VMOVQ), DestReg).addReg(SrcReg);