Summary:
The interface to get size and spill size of a register
was moved from MCRegisterInfo to TargetRegisterInfo over
a year ago. Afaik the old interface has bee around
to give out-of-tree targets a chance to adapt to the
new interface.
One problem with the old MCRegisterClass::PhysRegSize was that
it represented the size of a register as "size in bits" / 8.
So a register had to be a multiple of eight bits wide for the
size to be correct (and the byte size for the target needed to
be eight bits).
Reviewers: kparzysz, qcolombet
Reviewed By: kparzysz
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D47199
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@339350
91177308-0d34-0410-b5e6-
96231b3b80d8
const uint16_t RegsSize;
const uint16_t RegSetSize;
const uint16_t ID;
- const uint16_t PhysRegSize;
const int8_t CopyCost;
const bool Allocatable;
return contains(Reg1) && contains(Reg2);
}
- /// Return the size of the physical register in bytes.
- unsigned getPhysRegSize() const { return PhysRegSize; }
- /// Temporary function to allow out-of-tree targets to switch.
- unsigned getSize() const { return getPhysRegSize(); }
-
/// getCopyCost - Return the cost of copying a value between two registers in
/// this class. A negative number means the register class is very expensive
/// to copy e.g. status flag register classes.
return true;
}
unsigned BitSize = TRI->getSubRegIdxSize(SubIdx);
- // Convert bit size to byte size to be consistent with
- // MCRegisterClass::getSize().
+ // Convert bit size to byte size.
if (BitSize % 8)
return false;
for (const auto &RC : RegisterClasses) {
assert(isInt<8>(RC.CopyCost) && "Copy cost too large.");
- uint32_t RegSize = 0;
- if (RC.RSI.isSimple())
- RegSize = RC.RSI.getSimple().RegSize;
OS << " { " << RC.getName() << ", " << RC.getName() << "Bits, "
<< RegClassStrings.get(RC.getName()) << ", "
<< RC.getOrder().size() << ", sizeof(" << RC.getName() << "Bits), "
<< RC.getQualifiedName() + "RegClassID" << ", "
- << RegSize/8 << ", "
<< RC.CopyCost << ", "
<< ( RC.Allocatable ? "true" : "false" ) << " },\n";
}