diff options
Diffstat (limited to 'compiler/optimizing/code_generator_x86_64.cc')
| -rw-r--r-- | compiler/optimizing/code_generator_x86_64.cc | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/compiler/optimizing/code_generator_x86_64.cc b/compiler/optimizing/code_generator_x86_64.cc index 4d70efcf38..47fd304969 100644 --- a/compiler/optimizing/code_generator_x86_64.cc +++ b/compiler/optimizing/code_generator_x86_64.cc @@ -1363,6 +1363,12 @@ void LocationsBuilderX86_64::VisitTypeConversion(HTypeConversion* conversion) { break; case Primitive::kPrimFloat: + // Processing a Dex `float-to-int' instruction. + locations->SetInAt(0, Location::RequiresFpuRegister()); + locations->SetOut(Location::RequiresRegister()); + locations->AddTemp(Location::RequiresFpuRegister()); + break; + case Primitive::kPrimDouble: LOG(FATAL) << "Type conversion from " << input_type << " to " << result_type << " not yet implemented"; @@ -1550,7 +1556,31 @@ void InstructionCodeGeneratorX86_64::VisitTypeConversion(HTypeConversion* conver } break; - case Primitive::kPrimFloat: + case Primitive::kPrimFloat: { + // Processing a Dex `float-to-int' instruction. + XmmRegister input = in.AsFpuRegister<XmmRegister>(); + CpuRegister output = out.AsRegister<CpuRegister>(); + XmmRegister temp = locations->GetTemp(0).AsFpuRegister<XmmRegister>(); + Label done, nan; + + __ movl(output, Immediate(kPrimIntMax)); + // temp = int-to-float(output) + __ cvtsi2ss(temp, output); + // if input >= temp goto done + __ comiss(input, temp); + __ j(kAboveEqual, &done); + // if input == NaN goto nan + __ j(kUnordered, &nan); + // output = float-to-int-truncate(input) + __ cvttss2si(output, input); + __ jmp(&done); + __ Bind(&nan); + // output = 0 + __ xorl(output, output); + __ Bind(&done); + break; + } + case Primitive::kPrimDouble: LOG(FATAL) << "Type conversion from " << input_type << " to " << result_type << " not yet implemented"; |