diff options
Diffstat (limited to 'llvm/lib/CodeGen/RegisterScavenging.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/RegisterScavenging.cpp | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/llvm/lib/CodeGen/RegisterScavenging.cpp b/llvm/lib/CodeGen/RegisterScavenging.cpp index c965d8715b0..d673794e1b9 100644 --- a/llvm/lib/CodeGen/RegisterScavenging.cpp +++ b/llvm/lib/CodeGen/RegisterScavenging.cpp @@ -37,9 +37,8 @@ using namespace llvm; void RegScavenger::setUsed(unsigned Reg) { RegsAvailable.reset(Reg); - for (const uint16_t *SubRegs = TRI->getSubRegisters(Reg); - unsigned SubReg = *SubRegs; ++SubRegs) - RegsAvailable.reset(SubReg); + for (MCSubRegIterator SubRegs(Reg, TRI); SubRegs.isValid(); ++SubRegs) + RegsAvailable.reset(*SubRegs); } bool RegScavenger::isAliasUsed(unsigned Reg) const { @@ -112,8 +111,8 @@ void RegScavenger::enterBasicBlock(MachineBasicBlock *mbb) { void RegScavenger::addRegWithSubRegs(BitVector &BV, unsigned Reg) { BV.set(Reg); - for (const uint16_t *R = TRI->getSubRegisters(Reg); *R; R++) - BV.set(*R); + for (MCSubRegIterator SubRegs(Reg, TRI); SubRegs.isValid(); ++SubRegs) + BV.set(*SubRegs); } void RegScavenger::forward() { @@ -193,9 +192,8 @@ void RegScavenger::forward() { // Ideally we would like a way to model this, but leaving the // insert_subreg around causes both correctness and performance issues. bool SubUsed = false; - for (const uint16_t *SubRegs = TRI->getSubRegisters(Reg); - unsigned SubReg = *SubRegs; ++SubRegs) - if (isUsed(SubReg)) { + for (MCSubRegIterator SubRegs(Reg, TRI); SubRegs.isValid(); ++SubRegs) + if (isUsed(*SubRegs)) { SubUsed = true; break; } |
