diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst --- a/llvm/docs/LangRef.rst +++ b/llvm/docs/LangRef.rst @@ -13763,6 +13763,73 @@ %res = call i4 @llvm.smul.fix.sat.i4(i4 2, i4 4, i32 1) ; %res = 4 (1 x 2 = 2) +'``llvm.umul.fix.sat.*``' Intrinsics +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +Syntax +""""""" + +This is an overloaded intrinsic. You can use ``llvm.umul.fix.sat`` +on any integer bit width or vectors of integers. + +:: + + declare i16 @llvm.umul.fix.sat.i16(i16 %a, i16 %b, i32 %scale) + declare i32 @llvm.umul.fix.sat.i32(i32 %a, i32 %b, i32 %scale) + declare i64 @llvm.umul.fix.sat.i64(i64 %a, i64 %b, i32 %scale) + declare <4 x i32> @llvm.umul.fix.sat.v4i32(<4 x i32> %a, <4 x i32> %b, i32 %scale) + +Overview +""""""""" + +The '``llvm.umul.fix.sat``' family of intrinsic functions perform unsigned +fixed point saturation multiplication on 2 arguments of the same scale. + +Arguments +"""""""""" + +The arguments (%a and %b) and the result may be of integer types of any bit +width, but they must have the same bit width. ``%a`` and ``%b`` are the two +values that will undergo unsigned fixed point multiplication. The argument +``%scale`` represents the scale of both operands, and must be a constant +integer. + +Semantics: +"""""""""" + +This operation performs fixed point multiplication on the 2 arguments of a +specified scale. The result will also be returned in the same scale specified +in the third argument. + +If the result value cannot be precisely represented in the given scale, the +value is rounded up or down to the closest representable value. The rounding +direction is unspecified. + +The maximum value this operation can clamp to is the largest unsigned value +representable by the bit width of the first 2 arguments. The minimum value is the +smallest unsigned value representable by this bit width (zero). + + +Examples +""""""""" + +.. code-block:: llvm + + %res = call i4 @llvm.umul.fix.sat.i4(i4 3, i4 2, i32 0) ; %res = 6 (2 x 3 = 6) + %res = call i4 @llvm.umul.fix.sat.i4(i4 3, i4 2, i32 1) ; %res = 3 (1.5 x 1 = 1.5) + + ; The result in the following could be rounded down to 2 or up to 2.5 + %res = call i4 @llvm.umul.fix.sat.i4(i4 3, i4 3, i32 1) ; %res = 4 (or 5) (1.5 x 1.5 = 2.25) + + ; Saturation + %res = call i4 @llvm.umul.fix.sat.i4(i4 8, i4 2, i32 0) ; %res = 15 (8 x 2 -> clamped to 15) + %res = call i4 @llvm.umul.fix.sat.i4(i4 8, i4 8, i32 2) ; %res = 15 (2 x 2 -> clamped to 3.75) + + ; Scale can affect the saturation result + %res = call i4 @llvm.umul.fix.sat.i4(i4 2, i4 4, i32 0) ; %res = 7 (2 x 4 -> clamped to 7) + %res = call i4 @llvm.umul.fix.sat.i4(i4 2, i4 4, i32 1) ; %res = 4 (1 x 2 = 2) + + Specialised Arithmetic Intrinsics --------------------------------- diff --git a/llvm/include/llvm/CodeGen/ISDOpcodes.h b/llvm/include/llvm/CodeGen/ISDOpcodes.h --- a/llvm/include/llvm/CodeGen/ISDOpcodes.h +++ b/llvm/include/llvm/CodeGen/ISDOpcodes.h @@ -281,7 +281,7 @@ /// Same as the corresponding unsaturated fixed point instructions, but the /// result is clamped between the min and max values representable by the /// bits of the first 2 operands. - SMULFIXSAT, + SMULFIXSAT, UMULFIXSAT, /// Simple binary floating point operators. FADD, FSUB, FMUL, FDIV, FREM, diff --git a/llvm/include/llvm/CodeGen/TargetLowering.h b/llvm/include/llvm/CodeGen/TargetLowering.h --- a/llvm/include/llvm/CodeGen/TargetLowering.h +++ b/llvm/include/llvm/CodeGen/TargetLowering.h @@ -923,6 +923,7 @@ case ISD::SMULFIX: case ISD::SMULFIXSAT: case ISD::UMULFIX: + case ISD::UMULFIXSAT: Supported = isSupportedFixedPointOperation(Op, VT, Scale); break; } @@ -4098,8 +4099,8 @@ /// method accepts integers as its arguments. SDValue expandAddSubSat(SDNode *Node, SelectionDAG &DAG) const; - /// Method for building the DAG expansion of ISD::SMULFIX. This method accepts - /// integers as its arguments. + /// Method for building the DAG expansion of ISD::[U|S]MULFIX[SAT]. This + /// method accepts integers as its arguments. SDValue expandFixedPointMul(SDNode *Node, SelectionDAG &DAG) const; /// Method for building the DAG expansion of ISD::U(ADD|SUB)O. Expansion diff --git a/llvm/include/llvm/IR/Intrinsics.td b/llvm/include/llvm/IR/Intrinsics.td --- a/llvm/include/llvm/IR/Intrinsics.td +++ b/llvm/include/llvm/IR/Intrinsics.td @@ -895,6 +895,9 @@ def int_smul_fix_sat : Intrinsic<[llvm_anyint_ty], [LLVMMatchType<0>, LLVMMatchType<0>, llvm_i32_ty], [IntrNoMem, IntrSpeculatable, IntrWillReturn, Commutative, ImmArg<2>]>; +def int_umul_fix_sat : Intrinsic<[llvm_anyint_ty], + [LLVMMatchType<0>, LLVMMatchType<0>, llvm_i32_ty], + [IntrNoMem, IntrSpeculatable, IntrWillReturn, Commutative, ImmArg<2>]>; //===------------------------- Memory Use Markers -------------------------===// // diff --git a/llvm/include/llvm/Target/TargetSelectionDAG.td b/llvm/include/llvm/Target/TargetSelectionDAG.td --- a/llvm/include/llvm/Target/TargetSelectionDAG.td +++ b/llvm/include/llvm/Target/TargetSelectionDAG.td @@ -396,6 +396,7 @@ def smulfix : SDNode<"ISD::SMULFIX" , SDTIntScaledBinOp, [SDNPCommutative]>; def smulfixsat : SDNode<"ISD::SMULFIXSAT", SDTIntScaledBinOp, [SDNPCommutative]>; def umulfix : SDNode<"ISD::UMULFIX" , SDTIntScaledBinOp, [SDNPCommutative]>; +def umulfixsat : SDNode<"ISD::UMULFIXSAT", SDTIntScaledBinOp, [SDNPCommutative]>; def sext_inreg : SDNode<"ISD::SIGN_EXTEND_INREG", SDTExtInreg>; def sext_invec : SDNode<"ISD::SIGN_EXTEND_VECTOR_INREG", SDTExtInvec>; diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -1115,7 +1115,8 @@ } case ISD::SMULFIX: case ISD::SMULFIXSAT: - case ISD::UMULFIX: { + case ISD::UMULFIX: + case ISD::UMULFIXSAT: { unsigned Scale = Node->getConstantOperandVal(2); Action = TLI.getFixedPointOperationAction(Node->getOpcode(), Node->getValueType(0), Scale); @@ -3353,6 +3354,7 @@ case ISD::SMULFIX: case ISD::SMULFIXSAT: case ISD::UMULFIX: + case ISD::UMULFIXSAT: Results.push_back(TLI.expandFixedPointMul(Node, DAG)); break; case ISD::ADDCARRY: diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp @@ -150,9 +150,12 @@ case ISD::UADDSAT: case ISD::SSUBSAT: case ISD::USUBSAT: Res = PromoteIntRes_ADDSUBSAT(N); break; + case ISD::SMULFIX: case ISD::SMULFIXSAT: - case ISD::UMULFIX: Res = PromoteIntRes_MULFIX(N); break; + case ISD::UMULFIX: + case ISD::UMULFIXSAT: Res = PromoteIntRes_MULFIX(N); break; + case ISD::ABS: Res = PromoteIntRes_ABS(N); break; case ISD::ATOMIC_LOAD: @@ -689,6 +692,8 @@ SDValue Op1Promoted, Op2Promoted; bool Signed = N->getOpcode() == ISD::SMULFIX || N->getOpcode() == ISD::SMULFIXSAT; + bool Saturating = + N->getOpcode() == ISD::SMULFIXSAT || N->getOpcode() == ISD::UMULFIXSAT; if (Signed) { Op1Promoted = SExtPromotedInteger(N->getOperand(0)); Op2Promoted = SExtPromotedInteger(N->getOperand(1)); @@ -701,7 +706,6 @@ unsigned DiffSize = PromotedType.getScalarSizeInBits() - OldType.getScalarSizeInBits(); - bool Saturating = N->getOpcode() == ISD::SMULFIXSAT; if (Saturating) { // Promoting the operand and result values changes the saturation width, // which is extends the values that we clamp to on saturation. This could be @@ -1164,7 +1168,8 @@ case ISD::SMULFIX: case ISD::SMULFIXSAT: - case ISD::UMULFIX: Res = PromoteIntOp_MULFIX(N); break; + case ISD::UMULFIX: + case ISD::UMULFIXSAT: Res = PromoteIntOp_MULFIX(N); break; case ISD::FPOWI: Res = PromoteIntOp_FPOWI(N); break; @@ -1739,7 +1744,8 @@ case ISD::SMULFIX: case ISD::SMULFIXSAT: - case ISD::UMULFIX: ExpandIntRes_MULFIX(N, Lo, Hi); break; + case ISD::UMULFIX: + case ISD::UMULFIXSAT: ExpandIntRes_MULFIX(N, Lo, Hi); break; case ISD::VECREDUCE_ADD: case ISD::VECREDUCE_MUL: @@ -2810,7 +2816,8 @@ SDValue LHS = N->getOperand(0); SDValue RHS = N->getOperand(1); uint64_t Scale = N->getConstantOperandVal(2); - bool Saturating = N->getOpcode() == ISD::SMULFIXSAT; + bool Saturating = (N->getOpcode() == ISD::SMULFIXSAT || + N->getOpcode() == ISD::UMULFIXSAT); bool Signed = (N->getOpcode() == ISD::SMULFIX || N->getOpcode() == ISD::SMULFIXSAT); @@ -2821,23 +2828,35 @@ Result = DAG.getNode(ISD::MUL, dl, VT, LHS, RHS); } else { EVT BoolVT = getSetCCResultType(VT); - Result = DAG.getNode(ISD::SMULO, dl, DAG.getVTList(VT, BoolVT), LHS, RHS); + unsigned MulOp = Signed ? ISD::SMULO : ISD::UMULO; + Result = DAG.getNode(MulOp, dl, DAG.getVTList(VT, BoolVT), LHS, RHS); SDValue Product = Result.getValue(0); SDValue Overflow = Result.getValue(1); - assert(Signed && "Unsigned saturation not supported (yet)."); - APInt MinVal = APInt::getSignedMinValue(VTSize); - APInt MaxVal = APInt::getSignedMaxValue(VTSize); - SDValue SatMin = DAG.getConstant(MinVal, dl, VT); - SDValue SatMax = DAG.getConstant(MaxVal, dl, VT); - SDValue Zero = DAG.getConstant(0, dl, VT); - SDValue ProdNeg = DAG.getSetCC(dl, BoolVT, Product, Zero, ISD::SETLT); - Result = DAG.getSelect(dl, VT, ProdNeg, SatMax, SatMin); - Result = DAG.getSelect(dl, VT, Overflow, Result, Product); + if (Signed) { + APInt MinVal = APInt::getSignedMinValue(VTSize); + APInt MaxVal = APInt::getSignedMaxValue(VTSize); + SDValue SatMin = DAG.getConstant(MinVal, dl, VT); + SDValue SatMax = DAG.getConstant(MaxVal, dl, VT); + SDValue Zero = DAG.getConstant(0, dl, VT); + SDValue ProdNeg = DAG.getSetCC(dl, BoolVT, Product, Zero, ISD::SETLT); + Result = DAG.getSelect(dl, VT, ProdNeg, SatMax, SatMin); + Result = DAG.getSelect(dl, VT, Overflow, Result, Product); + } else { + // For unsigned multiplication, we only need to check the max since we + // can't really overflow towards zero. + APInt MaxVal = APInt::getMaxValue(VTSize); + SDValue SatMax = DAG.getConstant(MaxVal, dl, VT); + Result = DAG.getSelect(dl, VT, Overflow, SatMax, Product); + } } SplitInteger(Result, Lo, Hi); return; } + // For SMULFIX[SAT] we only expect to find Scale> Scale)) != 0). + SDValue HLAdjusted = DAG.getNode(ISD::SRL, dl, NVT, ResultHL, + DAG.getConstant(Scale, dl, ShiftTy)); + SDValue Tmp = DAG.getNode(ISD::OR, dl, NVT, HLAdjusted, ResultHH); + SatMax = DAG.getSetCC(dl, BoolNVT, Tmp, NVTZero, ISD::SETNE); + } else if (Scale == NVTSize) { + // Overflow happened if (HH != 0). + SatMax = DAG.getSetCC(dl, BoolNVT, ResultHH, NVTZero, ISD::SETNE); + } else if (Scale < VTSize) { + // Overflow happened if ((HH >> (Scale - NVTSize)) != 0). + SDValue HLAdjusted = DAG.getNode(ISD::SRL, dl, NVT, ResultHL, + DAG.getConstant(Scale - NVTSize, dl, + ShiftTy)); + SatMax = DAG.getSetCC(dl, BoolNVT, HLAdjusted, NVTZero, ISD::SETNE); + } + Hi = DAG.getSelect(dl, NVT, SatMax, NVTNeg1, Hi); + Lo = DAG.getSelect(dl, NVT, SatMax, NVTNeg1, Lo); + return; + } if (Scale < NVTSize) { // The number of overflow bits we can check are VTSize - Scale + 1 (we diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp @@ -452,7 +452,8 @@ break; case ISD::SMULFIX: case ISD::SMULFIXSAT: - case ISD::UMULFIX: { + case ISD::UMULFIX: + case ISD::UMULFIXSAT: { unsigned Scale = Node->getConstantOperandVal(2); Action = TLI.getFixedPointOperationAction(Node->getOpcode(), Node->getValueType(0), Scale); diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp @@ -187,6 +187,7 @@ case ISD::SMULFIX: case ISD::SMULFIXSAT: case ISD::UMULFIX: + case ISD::UMULFIXSAT: R = ScalarizeVecRes_MULFIX(N); break; } @@ -1002,6 +1003,7 @@ case ISD::SMULFIX: case ISD::SMULFIXSAT: case ISD::UMULFIX: + case ISD::UMULFIXSAT: SplitVecRes_MULFIX(N, Lo, Hi); break; } diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -6317,6 +6317,14 @@ Op3)); return; } + case Intrinsic::umul_fix_sat: { + SDValue Op1 = getValue(I.getArgOperand(0)); + SDValue Op2 = getValue(I.getArgOperand(1)); + SDValue Op3 = getValue(I.getArgOperand(2)); + setValue(&I, DAG.getNode(ISD::UMULFIXSAT, sdl, Op1.getValueType(), Op1, Op2, + Op3)); + return; + } case Intrinsic::stacksave: { SDValue Op = getRoot(); Res = DAG.getNode( diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp @@ -305,6 +305,7 @@ case ISD::SMULFIX: return "smulfix"; case ISD::SMULFIXSAT: return "smulfixsat"; case ISD::UMULFIX: return "umulfix"; + case ISD::UMULFIXSAT: return "umulfixsat"; // Conversion operators. case ISD::SIGN_EXTEND: return "sign_extend"; diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp --- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp @@ -6701,7 +6701,8 @@ TargetLowering::expandFixedPointMul(SDNode *Node, SelectionDAG &DAG) const { assert((Node->getOpcode() == ISD::SMULFIX || Node->getOpcode() == ISD::UMULFIX || - Node->getOpcode() == ISD::SMULFIXSAT) && + Node->getOpcode() == ISD::SMULFIXSAT || + Node->getOpcode() == ISD::UMULFIXSAT) && "Expected a fixed point multiplication opcode"); SDLoc dl(Node); @@ -6709,7 +6710,10 @@ SDValue RHS = Node->getOperand(1); EVT VT = LHS.getValueType(); unsigned Scale = Node->getConstantOperandVal(2); - bool Saturating = Node->getOpcode() == ISD::SMULFIXSAT; + bool Saturating = (Node->getOpcode() == ISD::SMULFIXSAT || + Node->getOpcode() == ISD::UMULFIXSAT); + bool Signed = (Node->getOpcode() == ISD::SMULFIX || + Node->getOpcode() == ISD::SMULFIXSAT); EVT BoolVT = getSetCCResultType(DAG.getDataLayout(), *DAG.getContext(), VT); unsigned VTSize = VT.getScalarSizeInBits(); @@ -6717,7 +6721,7 @@ // [us]mul.fix(a, b, 0) -> mul(a, b) if (!Saturating && isOperationLegalOrCustom(ISD::MUL, VT)) { return DAG.getNode(ISD::MUL, dl, VT, LHS, RHS); - } else if (Saturating && isOperationLegalOrCustom(ISD::SMULO, VT)) { + } else if (Signed && isOperationLegalOrCustom(ISD::SMULO, VT)) { SDValue Result = DAG.getNode(ISD::SMULO, dl, DAG.getVTList(VT, BoolVT), LHS, RHS); SDValue Product = Result.getValue(0); @@ -6731,11 +6735,18 @@ SDValue ProdNeg = DAG.getSetCC(dl, BoolVT, Product, Zero, ISD::SETLT); Result = DAG.getSelect(dl, VT, ProdNeg, SatMax, SatMin); return DAG.getSelect(dl, VT, Overflow, Result, Product); + } else if (!Signed && isOperationLegalOrCustom(ISD::UMULO, VT)) { + SDValue Result = + DAG.getNode(ISD::UMULO, dl, DAG.getVTList(VT, BoolVT), LHS, RHS); + SDValue Product = Result.getValue(0); + SDValue Overflow = Result.getValue(1); + + APInt MaxVal = APInt::getMaxValue(VTSize); + SDValue SatMax = DAG.getConstant(MaxVal, dl, VT); + return DAG.getSelect(dl, VT, Overflow, SatMax, Product); } } - bool Signed = - Node->getOpcode() == ISD::SMULFIX || Node->getOpcode() == ISD::SMULFIXSAT; assert(((Signed && Scale < VTSize) || (!Signed && Scale <= VTSize)) && "Expected scale to be less than the number of bits if signed or at " "most the number of bits if unsigned."); @@ -6761,7 +6772,7 @@ if (Scale == VTSize) // Result is just the top half since we'd be shifting by the width of the - // operand. + // operand. Overflow impossible so this works for UMULFIX and UMULFIXSAT. return Hi; // The result will need to be shifted right by the scale since both operands @@ -6773,20 +6784,44 @@ if (!Saturating) return Result; - unsigned OverflowBits = VTSize - Scale + 1; // +1 for the sign - SDValue HiMask = - DAG.getConstant(APInt::getHighBitsSet(VTSize, OverflowBits), dl, VT); - SDValue LoMask = DAG.getConstant( - APInt::getLowBitsSet(VTSize, VTSize - OverflowBits), dl, VT); - APInt MaxVal = APInt::getSignedMaxValue(VTSize); - APInt MinVal = APInt::getSignedMinValue(VTSize); + if (!Signed) { + // Unsigned overflow happened if the upper (VTSize - Scale) bits (of the + // widened multiplication) aren't all zeroes. + + // Saturate to max if ((Hi >> Scale) != 0), + // which is the same as if (Hi > ((1 << Scale) - 1)) + APInt MaxVal = APInt::getMaxValue(VTSize); + SDValue LowMask = DAG.getConstant(APInt::getLowBitsSet(VTSize, Scale), + dl, VT); + Result = DAG.getSelectCC(dl, Hi, LowMask, + DAG.getConstant(MaxVal, dl, VT), Result, + ISD::SETUGT); - Result = DAG.getSelectCC(dl, Hi, LoMask, + return Result; + } + + // Signed overflow happened if the upper (VTSize - Scale + 1) bits (of the + // widened multiplication) aren't all ones or all zeroes. We handled Scale==0 + // above so all the bits to examine is in Hi. + + // Saturate to max if ((Hi >> (Scale - 1)) > 0), + // which is the same as if (Hi > (1 << (Scale - 1)) - 1) + APInt MaxVal = APInt::getSignedMaxValue(VTSize); + SDValue LowMask = DAG.getConstant(APInt::getLowBitsSet(VTSize, Scale - 1), + dl, VT); + Result = DAG.getSelectCC(dl, Hi, LowMask, DAG.getConstant(MaxVal, dl, VT), Result, ISD::SETGT); - return DAG.getSelectCC(dl, Hi, HiMask, - DAG.getConstant(MinVal, dl, VT), Result, - ISD::SETLT); + // Saturate to min if (Hi >> (Scale - 1)) < -1), + // which is the same as if (HI < (-1 << (Scale - 1)) + APInt MinVal = APInt::getSignedMinValue(VTSize); + SDValue HighMask = + DAG.getConstant(APInt::getHighBitsSet(VTSize, VTSize - Scale + 1), + dl, VT); + Result = DAG.getSelectCC(dl, Hi, HighMask, + DAG.getConstant(MinVal, dl, VT), Result, + ISD::SETLT); + return Result; } void TargetLowering::expandUADDSUBO( diff --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp b/llvm/lib/CodeGen/TargetLoweringBase.cpp --- a/llvm/lib/CodeGen/TargetLoweringBase.cpp +++ b/llvm/lib/CodeGen/TargetLoweringBase.cpp @@ -651,6 +651,7 @@ setOperationAction(ISD::SMULFIX, VT, Expand); setOperationAction(ISD::SMULFIXSAT, VT, Expand); setOperationAction(ISD::UMULFIX, VT, Expand); + setOperationAction(ISD::UMULFIXSAT, VT, Expand); // Overflow operations default to expand setOperationAction(ISD::SADDO, VT, Expand); diff --git a/llvm/lib/IR/Verifier.cpp b/llvm/lib/IR/Verifier.cpp --- a/llvm/lib/IR/Verifier.cpp +++ b/llvm/lib/IR/Verifier.cpp @@ -4671,7 +4671,8 @@ } case Intrinsic::smul_fix: case Intrinsic::smul_fix_sat: - case Intrinsic::umul_fix: { + case Intrinsic::umul_fix: + case Intrinsic::umul_fix_sat: { Value *Op1 = Call.getArgOperand(0); Value *Op2 = Call.getArgOperand(1); Assert(Op1->getType()->isIntOrIntVectorTy(), diff --git a/llvm/test/CodeGen/X86/umul_fix_sat.ll b/llvm/test/CodeGen/X86/umul_fix_sat.ll new file mode 100644 --- /dev/null +++ b/llvm/test/CodeGen/X86/umul_fix_sat.ll @@ -0,0 +1,542 @@ +; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py +; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s --check-prefix=X64 +; RUN: llc < %s -mtriple=i686 -mattr=cmov | FileCheck %s --check-prefix=X86 + +declare i4 @llvm.umul.fix.sat.i4 (i4, i4, i32) +declare i32 @llvm.umul.fix.sat.i32 (i32, i32, i32) +declare i64 @llvm.umul.fix.sat.i64 (i64, i64, i32) +declare <4 x i32> @llvm.umul.fix.sat.v4i32(<4 x i32>, <4 x i32>, i32) + +define i32 @func(i32 %x, i32 %y) nounwind { +; X64-LABEL: func: +; X64: # %bb.0: +; X64-NEXT: movl %esi, %eax +; X64-NEXT: movl %edi, %ecx +; X64-NEXT: imulq %rax, %rcx +; X64-NEXT: movq %rcx, %rax +; X64-NEXT: shrq $32, %rax +; X64-NEXT: shrdl $2, %eax, %ecx +; X64-NEXT: cmpl $3, %eax +; X64-NEXT: movl $-1, %eax +; X64-NEXT: cmovbel %ecx, %eax +; X64-NEXT: retq +; +; X86-LABEL: func: +; X86: # %bb.0: +; X86-NEXT: movl {{[0-9]+}}(%esp), %eax +; X86-NEXT: mull {{[0-9]+}}(%esp) +; X86-NEXT: shrdl $2, %edx, %eax +; X86-NEXT: cmpl $3, %edx +; X86-NEXT: movl $-1, %ecx +; X86-NEXT: cmoval %ecx, %eax +; X86-NEXT: retl + %tmp = call i32 @llvm.umul.fix.sat.i32(i32 %x, i32 %y, i32 2) + ret i32 %tmp +} + +define i64 @func2(i64 %x, i64 %y) nounwind { +; X64-LABEL: func2: +; X64: # %bb.0: +; X64-NEXT: movq %rdi, %rax +; X64-NEXT: mulq %rsi +; X64-NEXT: shrdq $2, %rdx, %rax +; X64-NEXT: cmpq $3, %rdx +; X64-NEXT: movq $-1, %rcx +; X64-NEXT: cmovaq %rcx, %rax +; X64-NEXT: retq +; +; X86-LABEL: func2: +; X86: # %bb.0: +; X86-NEXT: pushl %ebp +; X86-NEXT: pushl %ebx +; X86-NEXT: pushl %edi +; X86-NEXT: pushl %esi +; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx +; X86-NEXT: movl {{[0-9]+}}(%esp), %esi +; X86-NEXT: movl %ecx, %eax +; X86-NEXT: mull %esi +; X86-NEXT: movl %edx, %edi +; X86-NEXT: movl %eax, %ebx +; X86-NEXT: movl %ecx, %eax +; X86-NEXT: mull {{[0-9]+}}(%esp) +; X86-NEXT: movl %eax, %ecx +; X86-NEXT: movl %edx, %ebp +; X86-NEXT: addl %ebx, %ebp +; X86-NEXT: adcl $0, %edi +; X86-NEXT: movl {{[0-9]+}}(%esp), %eax +; X86-NEXT: mull %esi +; X86-NEXT: movl %edx, %ebx +; X86-NEXT: movl %eax, %esi +; X86-NEXT: movl {{[0-9]+}}(%esp), %eax +; X86-NEXT: mull {{[0-9]+}}(%esp) +; X86-NEXT: addl %ebp, %eax +; X86-NEXT: adcl %edi, %edx +; X86-NEXT: adcl $0, %ebx +; X86-NEXT: addl %esi, %edx +; X86-NEXT: adcl $0, %ebx +; X86-NEXT: movl %edx, %esi +; X86-NEXT: shldl $30, %eax, %esi +; X86-NEXT: shrl $2, %edx +; X86-NEXT: shldl $30, %ecx, %eax +; X86-NEXT: orl %ebx, %edx +; X86-NEXT: movl $-1, %ecx +; X86-NEXT: cmovnel %ecx, %eax +; X86-NEXT: cmovnel %ecx, %esi +; X86-NEXT: movl %esi, %edx +; X86-NEXT: popl %esi +; X86-NEXT: popl %edi +; X86-NEXT: popl %ebx +; X86-NEXT: popl %ebp +; X86-NEXT: retl + %tmp = call i64 @llvm.umul.fix.sat.i64(i64 %x, i64 %y, i32 2) + ret i64 %tmp +} + +define i4 @func3(i4 %x, i4 %y) nounwind { +; X64-LABEL: func3: +; X64: # %bb.0: +; X64-NEXT: andl $15, %esi +; X64-NEXT: shlb $4, %dil +; X64-NEXT: movzbl %dil, %eax +; X64-NEXT: imull %esi, %eax +; X64-NEXT: movl %eax, %ecx +; X64-NEXT: shrb $2, %cl +; X64-NEXT: shrl $8, %eax +; X64-NEXT: movl %eax, %edx +; X64-NEXT: shlb $6, %dl +; X64-NEXT: orb %cl, %dl +; X64-NEXT: movzbl %dl, %ecx +; X64-NEXT: cmpb $3, %al +; X64-NEXT: movl $255, %eax +; X64-NEXT: cmovbel %ecx, %eax +; X64-NEXT: shrb $4, %al +; X64-NEXT: # kill: def $al killed $al killed $eax +; X64-NEXT: retq +; +; X86-LABEL: func3: +; X86: # %bb.0: +; X86-NEXT: movb {{[0-9]+}}(%esp), %al +; X86-NEXT: andb $15, %al +; X86-NEXT: movb {{[0-9]+}}(%esp), %cl +; X86-NEXT: movzbl %al, %edx +; X86-NEXT: shlb $4, %cl +; X86-NEXT: movzbl %cl, %eax +; X86-NEXT: imull %edx, %eax +; X86-NEXT: movb %ah, %cl +; X86-NEXT: shlb $6, %cl +; X86-NEXT: shrb $2, %al +; X86-NEXT: orb %cl, %al +; X86-NEXT: movzbl %al, %ecx +; X86-NEXT: cmpb $3, %ah +; X86-NEXT: movl $255, %eax +; X86-NEXT: cmovbel %ecx, %eax +; X86-NEXT: shrb $4, %al +; X86-NEXT: # kill: def $al killed $al killed $eax +; X86-NEXT: retl + %tmp = call i4 @llvm.umul.fix.sat.i4(i4 %x, i4 %y, i32 2) + ret i4 %tmp +} + +define <4 x i32> @vec(<4 x i32> %x, <4 x i32> %y) nounwind { +; X64-LABEL: vec: +; X64: # %bb.0: +; X64-NEXT: pshufd {{.*#+}} xmm2 = xmm1[3,1,2,3] +; X64-NEXT: movd %xmm2, %eax +; X64-NEXT: pshufd {{.*#+}} xmm2 = xmm0[3,1,2,3] +; X64-NEXT: movd %xmm2, %ecx +; X64-NEXT: imulq %rax, %rcx +; X64-NEXT: movq %rcx, %rax +; X64-NEXT: shrq $32, %rax +; X64-NEXT: shrdl $2, %eax, %ecx +; X64-NEXT: cmpl $3, %eax +; X64-NEXT: movl $-1, %eax +; X64-NEXT: cmoval %eax, %ecx +; X64-NEXT: movd %ecx, %xmm2 +; X64-NEXT: pshufd {{.*#+}} xmm3 = xmm1[2,3,0,1] +; X64-NEXT: movd %xmm3, %ecx +; X64-NEXT: pshufd {{.*#+}} xmm3 = xmm0[2,3,0,1] +; X64-NEXT: movd %xmm3, %edx +; X64-NEXT: imulq %rcx, %rdx +; X64-NEXT: movq %rdx, %rcx +; X64-NEXT: shrq $32, %rcx +; X64-NEXT: shrdl $2, %ecx, %edx +; X64-NEXT: cmpl $3, %ecx +; X64-NEXT: cmoval %eax, %edx +; X64-NEXT: movd %edx, %xmm3 +; X64-NEXT: punpckldq {{.*#+}} xmm3 = xmm3[0],xmm2[0],xmm3[1],xmm2[1] +; X64-NEXT: movd %xmm1, %ecx +; X64-NEXT: movd %xmm0, %edx +; X64-NEXT: imulq %rcx, %rdx +; X64-NEXT: movq %rdx, %rcx +; X64-NEXT: shrq $32, %rcx +; X64-NEXT: shrdl $2, %ecx, %edx +; X64-NEXT: cmpl $3, %ecx +; X64-NEXT: cmoval %eax, %edx +; X64-NEXT: movd %edx, %xmm2 +; X64-NEXT: pshufd {{.*#+}} xmm1 = xmm1[1,1,2,3] +; X64-NEXT: movd %xmm1, %ecx +; X64-NEXT: pshufd {{.*#+}} xmm0 = xmm0[1,1,2,3] +; X64-NEXT: movd %xmm0, %edx +; X64-NEXT: imulq %rcx, %rdx +; X64-NEXT: movq %rdx, %rcx +; X64-NEXT: shrq $32, %rcx +; X64-NEXT: shrdl $2, %ecx, %edx +; X64-NEXT: cmpl $3, %ecx +; X64-NEXT: cmoval %eax, %edx +; X64-NEXT: movd %edx, %xmm0 +; X64-NEXT: punpckldq {{.*#+}} xmm2 = xmm2[0],xmm0[0],xmm2[1],xmm0[1] +; X64-NEXT: punpcklqdq {{.*#+}} xmm2 = xmm2[0],xmm3[0] +; X64-NEXT: movdqa %xmm2, %xmm0 +; X64-NEXT: retq +; +; X86-LABEL: vec: +; X86: # %bb.0: +; X86-NEXT: pushl %ebp +; X86-NEXT: pushl %ebx +; X86-NEXT: pushl %edi +; X86-NEXT: pushl %esi +; X86-NEXT: movl {{[0-9]+}}(%esp), %edi +; X86-NEXT: movl {{[0-9]+}}(%esp), %ebx +; X86-NEXT: movl {{[0-9]+}}(%esp), %ebp +; X86-NEXT: movl {{[0-9]+}}(%esp), %eax +; X86-NEXT: mull {{[0-9]+}}(%esp) +; X86-NEXT: movl %eax, %esi +; X86-NEXT: shrdl $2, %edx, %esi +; X86-NEXT: cmpl $3, %edx +; X86-NEXT: movl $-1, %ecx +; X86-NEXT: cmoval %ecx, %esi +; X86-NEXT: movl %ebp, %eax +; X86-NEXT: mull {{[0-9]+}}(%esp) +; X86-NEXT: movl %eax, %ebp +; X86-NEXT: shrdl $2, %edx, %ebp +; X86-NEXT: cmpl $3, %edx +; X86-NEXT: cmoval %ecx, %ebp +; X86-NEXT: movl %ebx, %eax +; X86-NEXT: mull {{[0-9]+}}(%esp) +; X86-NEXT: movl %eax, %ebx +; X86-NEXT: shrdl $2, %edx, %ebx +; X86-NEXT: cmpl $3, %edx +; X86-NEXT: cmoval %ecx, %ebx +; X86-NEXT: movl {{[0-9]+}}(%esp), %eax +; X86-NEXT: mull {{[0-9]+}}(%esp) +; X86-NEXT: shrdl $2, %edx, %eax +; X86-NEXT: cmpl $3, %edx +; X86-NEXT: cmoval %ecx, %eax +; X86-NEXT: movl %eax, 12(%edi) +; X86-NEXT: movl %ebx, 8(%edi) +; X86-NEXT: movl %ebp, 4(%edi) +; X86-NEXT: movl %esi, (%edi) +; X86-NEXT: movl %edi, %eax +; X86-NEXT: popl %esi +; X86-NEXT: popl %edi +; X86-NEXT: popl %ebx +; X86-NEXT: popl %ebp +; X86-NEXT: retl $4 + %tmp = call <4 x i32> @llvm.umul.fix.sat.v4i32(<4 x i32> %x, <4 x i32> %y, i32 2) + ret <4 x i32> %tmp +} + +; These result in regular integer multiplication +define i32 @func4(i32 %x, i32 %y) nounwind { +; X64-LABEL: func4: +; X64: # %bb.0: +; X64-NEXT: movl %edi, %eax +; X64-NEXT: mull %esi +; X64-NEXT: movl $-1, %ecx +; X64-NEXT: cmovol %ecx, %eax +; X64-NEXT: retq +; +; X86-LABEL: func4: +; X86: # %bb.0: +; X86-NEXT: movl {{[0-9]+}}(%esp), %eax +; X86-NEXT: mull {{[0-9]+}}(%esp) +; X86-NEXT: movl $-1, %ecx +; X86-NEXT: cmovol %ecx, %eax +; X86-NEXT: retl + %tmp = call i32 @llvm.umul.fix.sat.i32(i32 %x, i32 %y, i32 0) + ret i32 %tmp +} + +define i64 @func5(i64 %x, i64 %y) { +; X64-LABEL: func5: +; X64: # %bb.0: +; X64-NEXT: movq %rdi, %rax +; X64-NEXT: mulq %rsi +; X64-NEXT: movq $-1, %rcx +; X64-NEXT: cmovoq %rcx, %rax +; X64-NEXT: retq +; +; X86-LABEL: func5: +; X86: # %bb.0: +; X86-NEXT: pushl %ebp +; X86-NEXT: .cfi_def_cfa_offset 8 +; X86-NEXT: pushl %ebx +; X86-NEXT: .cfi_def_cfa_offset 12 +; X86-NEXT: pushl %edi +; X86-NEXT: .cfi_def_cfa_offset 16 +; X86-NEXT: pushl %esi +; X86-NEXT: .cfi_def_cfa_offset 20 +; X86-NEXT: .cfi_offset %esi, -20 +; X86-NEXT: .cfi_offset %edi, -16 +; X86-NEXT: .cfi_offset %ebx, -12 +; X86-NEXT: .cfi_offset %ebp, -8 +; X86-NEXT: movl {{[0-9]+}}(%esp), %ebp +; X86-NEXT: movl {{[0-9]+}}(%esp), %eax +; X86-NEXT: movl {{[0-9]+}}(%esp), %esi +; X86-NEXT: testl %esi, %esi +; X86-NEXT: setne %dl +; X86-NEXT: testl %eax, %eax +; X86-NEXT: setne %cl +; X86-NEXT: andb %dl, %cl +; X86-NEXT: mull {{[0-9]+}}(%esp) +; X86-NEXT: movl %eax, %edi +; X86-NEXT: seto %bl +; X86-NEXT: movl %esi, %eax +; X86-NEXT: mull %ebp +; X86-NEXT: movl %eax, %esi +; X86-NEXT: seto %ch +; X86-NEXT: orb %bl, %ch +; X86-NEXT: addl %edi, %esi +; X86-NEXT: movl %ebp, %eax +; X86-NEXT: mull {{[0-9]+}}(%esp) +; X86-NEXT: addl %esi, %edx +; X86-NEXT: setb %bl +; X86-NEXT: orb %ch, %bl +; X86-NEXT: orb %cl, %bl +; X86-NEXT: movl $-1, %ecx +; X86-NEXT: cmovnel %ecx, %eax +; X86-NEXT: cmovnel %ecx, %edx +; X86-NEXT: popl %esi +; X86-NEXT: .cfi_def_cfa_offset 16 +; X86-NEXT: popl %edi +; X86-NEXT: .cfi_def_cfa_offset 12 +; X86-NEXT: popl %ebx +; X86-NEXT: .cfi_def_cfa_offset 8 +; X86-NEXT: popl %ebp +; X86-NEXT: .cfi_def_cfa_offset 4 +; X86-NEXT: retl + %tmp = call i64 @llvm.umul.fix.sat.i64(i64 %x, i64 %y, i32 0) + ret i64 %tmp +} + +define i4 @func6(i4 %x, i4 %y) nounwind { +; X64-LABEL: func6: +; X64: # %bb.0: +; X64-NEXT: movl %edi, %eax +; X64-NEXT: andb $15, %sil +; X64-NEXT: shlb $4, %al +; X64-NEXT: # kill: def $al killed $al killed $eax +; X64-NEXT: mulb %sil +; X64-NEXT: movzbl %al, %ecx +; X64-NEXT: movl $255, %eax +; X64-NEXT: cmovnol %ecx, %eax +; X64-NEXT: shrb $4, %al +; X64-NEXT: # kill: def $al killed $al killed $eax +; X64-NEXT: retq +; +; X86-LABEL: func6: +; X86: # %bb.0: +; X86-NEXT: movb {{[0-9]+}}(%esp), %cl +; X86-NEXT: andb $15, %cl +; X86-NEXT: movb {{[0-9]+}}(%esp), %al +; X86-NEXT: shlb $4, %al +; X86-NEXT: mulb %cl +; X86-NEXT: movzbl %al, %ecx +; X86-NEXT: movl $255, %eax +; X86-NEXT: cmovnol %ecx, %eax +; X86-NEXT: shrb $4, %al +; X86-NEXT: # kill: def $al killed $al killed $eax +; X86-NEXT: retl + %tmp = call i4 @llvm.umul.fix.sat.i4(i4 %x, i4 %y, i32 0) + ret i4 %tmp +} + +define <4 x i32> @vec2(<4 x i32> %x, <4 x i32> %y) nounwind { +; X64-LABEL: vec2: +; X64: # %bb.0: +; X64-NEXT: pshufd {{.*#+}} xmm2 = xmm0[3,1,2,3] +; X64-NEXT: movd %xmm2, %eax +; X64-NEXT: pshufd {{.*#+}} xmm2 = xmm1[3,1,2,3] +; X64-NEXT: movd %xmm2, %ecx +; X64-NEXT: mull %ecx +; X64-NEXT: movl $-1, %ecx +; X64-NEXT: cmovol %ecx, %eax +; X64-NEXT: movd %eax, %xmm2 +; X64-NEXT: pshufd {{.*#+}} xmm3 = xmm0[2,3,0,1] +; X64-NEXT: movd %xmm3, %eax +; X64-NEXT: pshufd {{.*#+}} xmm3 = xmm1[2,3,0,1] +; X64-NEXT: movd %xmm3, %edx +; X64-NEXT: mull %edx +; X64-NEXT: cmovol %ecx, %eax +; X64-NEXT: movd %eax, %xmm3 +; X64-NEXT: punpckldq {{.*#+}} xmm3 = xmm3[0],xmm2[0],xmm3[1],xmm2[1] +; X64-NEXT: movd %xmm0, %eax +; X64-NEXT: movd %xmm1, %edx +; X64-NEXT: mull %edx +; X64-NEXT: cmovol %ecx, %eax +; X64-NEXT: movd %eax, %xmm2 +; X64-NEXT: pshufd {{.*#+}} xmm0 = xmm0[1,1,2,3] +; X64-NEXT: movd %xmm0, %eax +; X64-NEXT: pshufd {{.*#+}} xmm0 = xmm1[1,1,2,3] +; X64-NEXT: movd %xmm0, %edx +; X64-NEXT: mull %edx +; X64-NEXT: cmovol %ecx, %eax +; X64-NEXT: movd %eax, %xmm0 +; X64-NEXT: punpckldq {{.*#+}} xmm2 = xmm2[0],xmm0[0],xmm2[1],xmm0[1] +; X64-NEXT: punpcklqdq {{.*#+}} xmm2 = xmm2[0],xmm3[0] +; X64-NEXT: movdqa %xmm2, %xmm0 +; X64-NEXT: retq +; +; X86-LABEL: vec2: +; X86: # %bb.0: +; X86-NEXT: pushl %ebp +; X86-NEXT: pushl %ebx +; X86-NEXT: pushl %edi +; X86-NEXT: pushl %esi +; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx +; X86-NEXT: movl {{[0-9]+}}(%esp), %edi +; X86-NEXT: movl {{[0-9]+}}(%esp), %ebx +; X86-NEXT: movl {{[0-9]+}}(%esp), %eax +; X86-NEXT: mull {{[0-9]+}}(%esp) +; X86-NEXT: movl %eax, %ebp +; X86-NEXT: movl $-1, %esi +; X86-NEXT: cmovol %esi, %ebp +; X86-NEXT: movl %ebx, %eax +; X86-NEXT: mull {{[0-9]+}}(%esp) +; X86-NEXT: movl %eax, %ebx +; X86-NEXT: cmovol %esi, %ebx +; X86-NEXT: movl %edi, %eax +; X86-NEXT: mull {{[0-9]+}}(%esp) +; X86-NEXT: movl %eax, %edi +; X86-NEXT: cmovol %esi, %edi +; X86-NEXT: movl {{[0-9]+}}(%esp), %eax +; X86-NEXT: mull {{[0-9]+}}(%esp) +; X86-NEXT: cmovol %esi, %eax +; X86-NEXT: movl %eax, 12(%ecx) +; X86-NEXT: movl %edi, 8(%ecx) +; X86-NEXT: movl %ebx, 4(%ecx) +; X86-NEXT: movl %ebp, (%ecx) +; X86-NEXT: movl %ecx, %eax +; X86-NEXT: popl %esi +; X86-NEXT: popl %edi +; X86-NEXT: popl %ebx +; X86-NEXT: popl %ebp +; X86-NEXT: retl $4 + %tmp = call <4 x i32> @llvm.umul.fix.sat.v4i32(<4 x i32> %x, <4 x i32> %y, i32 0) + ret <4 x i32> %tmp +} + +define i64 @func7(i64 %x, i64 %y) nounwind { +; X64-LABEL: func7: +; X64: # %bb.0: +; X64-NEXT: movq %rdi, %rax +; X64-NEXT: mulq %rsi +; X64-NEXT: shrdq $32, %rdx, %rax +; X64-NEXT: movl $4294967295, %ecx # imm = 0xFFFFFFFF +; X64-NEXT: cmpq %rcx, %rdx +; X64-NEXT: movq $-1, %rcx +; X64-NEXT: cmovaq %rcx, %rax +; X64-NEXT: retq +; +; X86-LABEL: func7: +; X86: # %bb.0: +; X86-NEXT: pushl %ebp +; X86-NEXT: pushl %ebx +; X86-NEXT: pushl %edi +; X86-NEXT: pushl %esi +; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx +; X86-NEXT: movl {{[0-9]+}}(%esp), %esi +; X86-NEXT: movl {{[0-9]+}}(%esp), %ebp +; X86-NEXT: movl %ecx, %eax +; X86-NEXT: mull %ebp +; X86-NEXT: movl %edx, %edi +; X86-NEXT: movl %eax, %ebx +; X86-NEXT: movl %ecx, %eax +; X86-NEXT: mull %esi +; X86-NEXT: movl %edx, %ecx +; X86-NEXT: addl %ebx, %ecx +; X86-NEXT: adcl $0, %edi +; X86-NEXT: movl {{[0-9]+}}(%esp), %eax +; X86-NEXT: mull %ebp +; X86-NEXT: movl %edx, %ebx +; X86-NEXT: movl %eax, %ebp +; X86-NEXT: movl {{[0-9]+}}(%esp), %eax +; X86-NEXT: mull %esi +; X86-NEXT: addl %ecx, %eax +; X86-NEXT: adcl %edi, %edx +; X86-NEXT: adcl $0, %ebx +; X86-NEXT: addl %ebp, %edx +; X86-NEXT: adcl $0, %ebx +; X86-NEXT: xorl %ecx, %ecx +; X86-NEXT: cmpl $1, %ebx +; X86-NEXT: sbbl %ecx, %ecx +; X86-NEXT: notl %ecx +; X86-NEXT: orl %ecx, %eax +; X86-NEXT: orl %ecx, %edx +; X86-NEXT: popl %esi +; X86-NEXT: popl %edi +; X86-NEXT: popl %ebx +; X86-NEXT: popl %ebp +; X86-NEXT: retl + %tmp = call i64 @llvm.umul.fix.sat.i64(i64 %x, i64 %y, i32 32) + ret i64 %tmp +} + +define i64 @func8(i64 %x, i64 %y) nounwind { +; X64-LABEL: func8: +; X64: # %bb.0: +; X64-NEXT: movq %rdi, %rax +; X64-NEXT: mulq %rsi +; X64-NEXT: shrdq $63, %rdx, %rax +; X64-NEXT: movabsq $9223372036854775807, %rcx # imm = 0x7FFFFFFFFFFFFFFF +; X64-NEXT: cmpq %rcx, %rdx +; X64-NEXT: movq $-1, %rcx +; X64-NEXT: cmovaq %rcx, %rax +; X64-NEXT: retq +; +; X86-LABEL: func8: +; X86: # %bb.0: +; X86-NEXT: pushl %ebp +; X86-NEXT: pushl %ebx +; X86-NEXT: pushl %edi +; X86-NEXT: pushl %esi +; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx +; X86-NEXT: movl {{[0-9]+}}(%esp), %esi +; X86-NEXT: movl {{[0-9]+}}(%esp), %ebp +; X86-NEXT: movl %ecx, %eax +; X86-NEXT: mull %ebp +; X86-NEXT: movl %edx, %edi +; X86-NEXT: movl %eax, %ebx +; X86-NEXT: movl %ecx, %eax +; X86-NEXT: mull %esi +; X86-NEXT: movl %edx, %ecx +; X86-NEXT: addl %ebx, %ecx +; X86-NEXT: adcl $0, %edi +; X86-NEXT: movl {{[0-9]+}}(%esp), %eax +; X86-NEXT: mull %ebp +; X86-NEXT: movl %edx, %ebx +; X86-NEXT: movl %eax, %ebp +; X86-NEXT: movl {{[0-9]+}}(%esp), %eax +; X86-NEXT: mull %esi +; X86-NEXT: addl %ecx, %eax +; X86-NEXT: adcl %edi, %edx +; X86-NEXT: adcl $0, %ebx +; X86-NEXT: addl %ebp, %edx +; X86-NEXT: adcl $0, %ebx +; X86-NEXT: shrdl $31, %edx, %eax +; X86-NEXT: shrl $31, %edx +; X86-NEXT: xorl %ecx, %ecx +; X86-NEXT: cmpl $1, %edx +; X86-NEXT: sbbl %ecx, %ecx +; X86-NEXT: notl %ecx +; X86-NEXT: orl %ecx, %eax +; X86-NEXT: leal (%edx,%ebx,2), %edx +; X86-NEXT: orl %ecx, %edx +; X86-NEXT: popl %esi +; X86-NEXT: popl %edi +; X86-NEXT: popl %ebx +; X86-NEXT: popl %ebp +; X86-NEXT: retl + %tmp = call i64 @llvm.umul.fix.sat.i64(i64 %x, i64 %y, i32 63) + ret i64 %tmp +}