diff options
Diffstat (limited to 'lib/CodeGen/RegisterCoalescer.cpp')
| -rw-r--r-- | lib/CodeGen/RegisterCoalescer.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/CodeGen/RegisterCoalescer.cpp b/lib/CodeGen/RegisterCoalescer.cpp index 64e6da51e4..13ea1a58e0 100644 --- a/lib/CodeGen/RegisterCoalescer.cpp +++ b/lib/CodeGen/RegisterCoalescer.cpp @@ -939,8 +939,11 @@ void RegisterCoalescer::updateRegDefsUses(unsigned SrcReg, LiveInterval *DstInt = DstIsPhys ? 0 : &LIS->getInterval(DstReg); SmallPtrSet<MachineInstr*, 8> Visited; - for (MachineRegisterInfo::reg_iterator I = MRI->reg_begin(SrcReg); - MachineInstr *UseMI = I.skipInstruction();) { + for (MachineRegisterInfo::reg_instr_iterator + I = MRI->reg_instr_begin(SrcReg), E = MRI->reg_instr_end(); + I != E; ) { + MachineInstr *UseMI = &*(I++); + // Each instruction can only be rewritten once because sub-register // composition is not always idempotent. When SrcReg != DstReg, rewriting // the UseMI operands removes them from the SrcReg use-def chain, but when |