public static void emitRem(
CompilationResultBuilder crb,
SPARCMacroAssembler masm,
SPARCArithmetic opcode,
Value dst,
Value src1,
Value src2,
Value scratch1,
Value scratch2,
LIRFrameState info,
SPARCDelayedControlTransfer delaySlotLir) {
int exceptionOffset = -1;
if (!isConstant(src1) && isConstant(src2)) {
assert isSimm13(crb.asIntConst(src2));
assert !src1.equals(scratch1);
assert !src1.equals(scratch2);
assert !src2.equals(scratch1);
switch (opcode) {
case IREM:
new Sra(asIntReg(src1), 0, asIntReg(dst)).emit(masm);
exceptionOffset = masm.position();
new Sdivx(asIntReg(dst), crb.asIntConst(src2), asIntReg(scratch1)).emit(masm);
new Mulx(asIntReg(scratch1), crb.asIntConst(src2), asIntReg(scratch2)).emit(masm);
delaySlotLir.emitControlTransfer(crb, masm);
new Sub(asIntReg(dst), asIntReg(scratch2), asIntReg(dst)).emit(masm);
break;
case LREM:
exceptionOffset = masm.position();
new Sdivx(asLongReg(src1), crb.asIntConst(src2), asLongReg(scratch1)).emit(masm);
new Mulx(asLongReg(scratch1), crb.asIntConst(src2), asLongReg(scratch2)).emit(masm);
delaySlotLir.emitControlTransfer(crb, masm);
new Sub(asLongReg(src1), asLongReg(scratch2), asLongReg(dst)).emit(masm);
break;
case LUREM:
exceptionOffset = masm.position();
new Udivx(asLongReg(src1), crb.asIntConst(src2), asLongReg(scratch1)).emit(masm);
new Mulx(asLongReg(scratch1), crb.asIntConst(src2), asLongReg(scratch2)).emit(masm);
delaySlotLir.emitControlTransfer(crb, masm);
new Sub(asLongReg(src1), asLongReg(scratch2), asLongReg(dst)).emit(masm);
break;
case IUREM:
GraalInternalError.unimplemented();
break;
default:
throw GraalInternalError.shouldNotReachHere();
}
} else if (isRegister(src1) && isRegister(src2)) {
Value srcLeft = src1;
switch (opcode) {
case LREM:
if (isConstant(src1)) {
new Setx(crb.asLongConst(src1), asLongReg(scratch2), false).emit(masm);
srcLeft = scratch2;
}
assert !asLongReg(srcLeft).equals(asLongReg(scratch1));
assert !asLongReg(src2).equals(asLongReg(scratch1));
// But src2 can be scratch2
exceptionOffset = masm.position();
new Sdivx(asLongReg(srcLeft), asLongReg(src2), asLongReg(scratch1)).emit(masm);
new Mulx(asLongReg(scratch1), asLongReg(src2), asLongReg(scratch1)).emit(masm);
delaySlotLir.emitControlTransfer(crb, masm);
new Sub(asLongReg(srcLeft), asLongReg(scratch1), asLongReg(dst)).emit(masm);
break;
case LUREM:
if (isConstant(src1)) {
new Setx(crb.asLongConst(src1), asLongReg(scratch2), false).emit(masm);
srcLeft = scratch2;
}
assert !asLongReg(srcLeft).equals(asLongReg(scratch1));
assert !asLongReg(src2).equals(asLongReg(scratch1));
exceptionOffset = masm.position();
new Udivx(asLongReg(srcLeft), asLongReg(src2), asLongReg(scratch1)).emit(masm);
new Mulx(asLongReg(scratch1), asLongReg(src2), asLongReg(scratch1)).emit(masm);
delaySlotLir.emitControlTransfer(crb, masm);
new Sub(asLongReg(srcLeft), asLongReg(scratch1), asLongReg(dst)).emit(masm);
break;
case IREM:
if (isConstant(src1)) {
new Setx(crb.asIntConst(src1), asIntReg(scratch2), false).emit(masm);
srcLeft = scratch2;
}
assert !asIntReg(srcLeft).equals(asIntReg(scratch1));
assert !asIntReg(src2).equals(asIntReg(scratch1));
new Sra(asIntReg(src1), 0, asIntReg(scratch1)).emit(masm);
new Sra(asIntReg(src2), 0, asIntReg(scratch2)).emit(masm);
exceptionOffset = masm.position();
new Sdivx(asIntReg(scratch1), asIntReg(scratch2), asIntReg(dst)).emit(masm);
new Mulx(asIntReg(dst), asIntReg(scratch2), asIntReg(dst)).emit(masm);
delaySlotLir.emitControlTransfer(crb, masm);
new Sub(asIntReg(scratch1), asIntReg(dst), asIntReg(dst)).emit(masm);
break;
case IUREM:
assert !asIntReg(dst).equals(asIntReg(scratch1));
assert !asIntReg(dst).equals(asIntReg(scratch2));
new Srl(asIntReg(src1), 0, asIntReg(scratch1)).emit(masm);
new Srl(asIntReg(src2), 0, asIntReg(dst)).emit(masm);
exceptionOffset = masm.position();
new Udivx(asIntReg(scratch1), asIntReg(dst), asIntReg(scratch2)).emit(masm);
new Mulx(asIntReg(scratch2), asIntReg(dst), asIntReg(dst)).emit(masm);
delaySlotLir.emitControlTransfer(crb, masm);
new Sub(asIntReg(scratch1), asIntReg(dst), asIntReg(dst)).emit(masm);
break;
default:
throw GraalInternalError.shouldNotReachHere();
}
} else {
throw GraalInternalError.shouldNotReachHere();
}
if (info != null) {
assert exceptionOffset != -1;
crb.recordImplicitException(exceptionOffset, info);
}
}
