diff options
Diffstat (limited to 'lib/CodeGen/SimpleRegisterCoalescing.cpp')
| -rw-r--r-- | lib/CodeGen/SimpleRegisterCoalescing.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp index e06eb161c0..0044f06d33 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -568,7 +568,9 @@ SimpleRegisterCoalescing::UpdateRegDefsUses(unsigned SrcReg, unsigned DstReg, unsigned CopySrcReg, CopyDstReg; if (TID.getNumDefs() == 1 && TID.getNumOperands() > 2 && tii_->isMoveInstr(*UseMI, CopySrcReg, CopyDstReg) && - CopySrcReg != CopyDstReg) { + CopySrcReg != CopyDstReg && + (TargetRegisterInfo::isVirtualRegister(CopyDstReg) || + allocatableRegs_[CopyDstReg])) { LiveInterval &LI = li_->getInterval(CopyDstReg); unsigned DefIdx = li_->getDefIndex(li_->getInstructionIndex(UseMI)); const LiveRange *DLR = LI.getLiveRangeContaining(DefIdx); |