diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/MachineRegisterInfo.cpp | 2 | ||||
| -rw-r--r-- | lib/Target/TargetRegisterInfo.cpp | 3 |
2 files changed, 4 insertions, 1 deletions
diff --git a/lib/CodeGen/MachineRegisterInfo.cpp b/lib/CodeGen/MachineRegisterInfo.cpp index 7244d5f03a..08ff5bb715 100644 --- a/lib/CodeGen/MachineRegisterInfo.cpp +++ b/lib/CodeGen/MachineRegisterInfo.cpp @@ -79,6 +79,8 @@ MachineRegisterInfo::constrainRegClass(unsigned Reg, unsigned MachineRegisterInfo::createVirtualRegister(const TargetRegisterClass *RegClass){ assert(RegClass && "Cannot create register without RegClass!"); + assert(RegClass->isAllocatable() && + "Virtual register RegClass must be allocatable."); // New virtual register number. unsigned Reg = TargetRegisterInfo::index2VirtReg(getNumVirtRegs()); diff --git a/lib/Target/TargetRegisterInfo.cpp b/lib/Target/TargetRegisterInfo.cpp index 4811ba5cc4..1c3f2dda33 100644 --- a/lib/Target/TargetRegisterInfo.cpp +++ b/lib/Target/TargetRegisterInfo.cpp @@ -96,7 +96,8 @@ BitVector TargetRegisterInfo::getAllocatableSet(const MachineFunction &MF, } else { for (TargetRegisterInfo::regclass_iterator I = regclass_begin(), E = regclass_end(); I != E; ++I) - getAllocatableSetForRC(MF, *I, Allocatable); + if ((*I)->isAllocatable()) + getAllocatableSetForRC(MF, *I, Allocatable); } // Mask out the reserved registers |