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Debug Info: Bail out of AddMachineRegPiece() if MachineReg is not a

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physical register. The call to getMinimalPhysRegClass() later on asserts
on this condition.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225852 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adrian Prantl 2015-01-13 23:39:15 +00:00
parent 57ed5ffc76
commit bc42415f0f
1 changed files with 6 additions and 0 deletions
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6
lib/CodeGen/AsmPrinter/DwarfExpression.cpp
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@ -93,6 +93,12 @@ void DwarfExpression::AddMachineRegPiece(unsigned MachineReg,
unsigned PieceSizeInBits,
unsigned PieceOffsetInBits) {
const TargetRegisterInfo *TRI = getTRI();
if (!TRI->isPhysicalRegister(MachineReg)) {
// FIXME: We have no reasonable way of handling errors in here.
EmitOp(dwarf::DW_OP_nop, "nop (could not find a dwarf register number)");
return;
}
int Reg = TRI->getDwarfRegNum(MachineReg, false);
// If this is a valid register number, emit it.