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Fix printing of f16 machine operands 

Only single and double FP immediates are correctly printed by
MachineInstr::print() during debug output. Half float type goes to
APFloat::convertToDouble() and hits assertion it is not a double
semantics. This diff prints half machine operands correctly.

This cannot currently be hit by any in-tree target.

Patch by Stanislav Mekhanoshin

llvm-svn: 259857
This commit is contained in:
Matt Arsenault 2016-02-05 00:50:18 +00:00
parent 312b34fc30
commit 5923973fe2
1 changed files with 8 additions and 2 deletions
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10
llvm/lib/CodeGen/MachineInstr.cpp
View File

@ -372,10 +372,16 @@ void MachineOperand::print(raw_ostream &OS, ModuleSlotTracker &MST,
getCImm()->getValue().print(OS, false);
break;
case MachineOperand::MO_FPImmediate:
if (getFPImm()->getType()->isFloatTy())
if (getFPImm()->getType()->isFloatTy()) {
OS << getFPImm()->getValueAPF().convertToFloat();
else
} else if (getFPImm()->getType()->isHalfTy()) {
APFloat APF = getFPImm()->getValueAPF();
bool Unused;
APF.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven, &Unused);
OS << "half " << APF.convertToFloat();
} else {
OS << getFPImm()->getValueAPF().convertToDouble();
}
break;
case MachineOperand::MO_MachineBasicBlock:
OS << "<BB#" << getMBB()->getNumber() << ">";