diff --git a/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp b/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp index 9ab2bd8f70aa1..4d3de76389c28 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp @@ -1687,6 +1687,109 @@ static Value *foldSelectInstWithICmpConst(SelectInst &SI, ICmpInst *ICI, return nullptr; } +static Instruction *foldSelectICmpEq(SelectInst &SI, ICmpInst *ICI, + InstCombinerImpl &IC) { + ICmpInst::Predicate Pred = ICI->getPredicate(); + if (!ICmpInst::isEquality(Pred)) + return nullptr; + + Value *TrueVal = SI.getTrueValue(); + Value *FalseVal = SI.getFalseValue(); + Value *CmpLHS = ICI->getOperand(0); + Value *CmpRHS = ICI->getOperand(1); + + if (Pred == ICmpInst::ICMP_NE) + std::swap(TrueVal, FalseVal); + + // Transform (X == C) ? X : Y -> (X == C) ? C : Y + // specific handling for Bitwise operation. + // x&y -> (x|y) ^ (x^y) or (x|y) & ~(x^y) + // x|y -> (x&y) | (x^y) or (x&y) ^ (x^y) + // x^y -> (x|y) ^ (x&y) or (x|y) & ~(x&y) + Value *X, *Y; + if (!match(CmpLHS, m_BitwiseLogic(m_Value(X), m_Value(Y))) || + !match(TrueVal, m_c_BitwiseLogic(m_Specific(X), m_Specific(Y)))) + return nullptr; + + const unsigned AndOps = Instruction::And, OrOps = Instruction::Or, + XorOps = Instruction::Xor, NoOps = 0; + enum NotMask { None = 0, NotInner, NotRHS }; + + auto matchFalseVal = [&](unsigned OuterOpc, unsigned InnerOpc, + unsigned NotMask) { + auto matchInner = m_c_BinOp(InnerOpc, m_Specific(X), m_Specific(Y)); + if (OuterOpc == NoOps) + return match(CmpRHS, m_Zero()) && match(FalseVal, matchInner); + + if (NotMask == NotInner) { + return match(FalseVal, + m_c_BinOp(OuterOpc, m_Not(matchInner), m_Specific(CmpRHS))); + } else if (NotMask == NotRHS) { + return match(FalseVal, + m_c_BinOp(OuterOpc, matchInner, m_Not(m_Specific(CmpRHS)))); + } else { + return match(FalseVal, + m_c_BinOp(OuterOpc, matchInner, m_Specific(CmpRHS))); + } + }; + + // (X&Y)==C ? X|Y : X^Y -> (X^Y)|C : X^Y or (X^Y)^ C : X^Y + // (X&Y)==C ? X^Y : X|Y -> (X|Y)^C : X|Y or (X|Y)&~C : X|Y + if (match(CmpLHS, m_And(m_Value(X), m_Value(Y)))) { + if (match(TrueVal, m_c_Or(m_Specific(X), m_Specific(Y)))) { + // (X&Y)==C ? X|Y : (X^Y)|C -> (X^Y)|C : (X^Y)|C -> (X^Y)|C + // (X&Y)==C ? X|Y : (X^Y)^C -> (X^Y)^C : (X^Y)^C -> (X^Y)^C + if (matchFalseVal(OrOps, XorOps, None) || + matchFalseVal(XorOps, XorOps, None)) + return IC.replaceInstUsesWith(SI, FalseVal); + } else if (match(TrueVal, m_c_Xor(m_Specific(X), m_Specific(Y)))) { + // (X&Y)==C ? X^Y : (X|Y)^ C -> (X|Y)^ C : (X|Y)^ C -> (X|Y)^ C + // (X&Y)==C ? X^Y : (X|Y)&~C -> (X|Y)&~C : (X|Y)&~C -> (X|Y)&~C + if (matchFalseVal(XorOps, OrOps, None) || + matchFalseVal(AndOps, OrOps, NotRHS)) + return IC.replaceInstUsesWith(SI, FalseVal); + } + } + + // (X|Y)==C ? X&Y : X^Y -> (X^Y)^C : X^Y or ~(X^Y)&C : X^Y + // (X|Y)==C ? X^Y : X&Y -> (X&Y)^C : X&Y or ~(X&Y)&C : X&Y + if (match(CmpLHS, m_Or(m_Value(X), m_Value(Y)))) { + if (match(TrueVal, m_c_And(m_Specific(X), m_Specific(Y)))) { + // (X|Y)==C ? X&Y: (X^Y)^C -> (X^Y)^C: (X^Y)^C -> (X^Y)^C + // (X|Y)==C ? X&Y:~(X^Y)&C ->~(X^Y)&C:~(X^Y)&C -> ~(X^Y)&C + if (matchFalseVal(XorOps, XorOps, None) || + matchFalseVal(AndOps, XorOps, NotInner)) + return IC.replaceInstUsesWith(SI, FalseVal); + } else if (match(TrueVal, m_c_Xor(m_Specific(X), m_Specific(Y)))) { + // (X|Y)==C ? X^Y : (X&Y)^C -> (X&Y)^C : (X&Y)^C -> (X&Y)^C + // (X|Y)==C ? X^Y :~(X&Y)&C -> ~(X&Y)&C :~(X&Y)&C -> ~(X&Y)&C + if (matchFalseVal(XorOps, AndOps, None) || + matchFalseVal(AndOps, AndOps, NotInner)) + return IC.replaceInstUsesWith(SI, FalseVal); + } + } + + // (X^Y)==C ? X&Y : X|Y -> (X|Y)^C : X|Y or (X|Y)&~C : X|Y + // (X^Y)==C ? X|Y : X&Y -> (X&Y)|C : X&Y or (X&Y)^ C : X&Y + if (match(CmpLHS, m_Xor(m_Value(X), m_Value(Y)))) { + if ((match(TrueVal, m_c_And(m_Specific(X), m_Specific(Y))))) { + // (X^Y)==C ? X&Y : (X|Y)^C -> (X|Y)^C + // (X^Y)==C ? X&Y : (X|Y)&~C -> (X|Y)&~C + if (matchFalseVal(XorOps, OrOps, None) || + matchFalseVal(AndOps, OrOps, NotRHS)) + return IC.replaceInstUsesWith(SI, FalseVal); + } else if (match(TrueVal, m_c_Or(m_Specific(X), m_Specific(Y)))) { + // (X^Y)==C ? (X|Y) : (X&Y)|C -> (X&Y)|C + // (X^Y)==C ? (X|Y) : (X&Y)^C -> (X&Y)^C + if (matchFalseVal(OrOps, AndOps, None) || + matchFalseVal(XorOps, AndOps, None)) + return IC.replaceInstUsesWith(SI, FalseVal); + } + } + + return nullptr; +} + /// Visit a SelectInst that has an ICmpInst as its first operand. Instruction *InstCombinerImpl::foldSelectInstWithICmp(SelectInst &SI, ICmpInst *ICI) { @@ -1729,6 +1832,9 @@ Instruction *InstCombinerImpl::foldSelectInstWithICmp(SelectInst &SI, } } + if (Instruction *NewSel = foldSelectICmpEq(SI, ICI, *this)) + return NewSel; + // Canonicalize a signbit condition to use zero constant by swapping: // (CmpLHS > -1) ? TV : FV --> (CmpLHS < 0) ? FV : TV // To avoid conflicts (infinite loops) with other canonicalizations, this is diff --git a/llvm/test/Transforms/InstCombine/select.ll b/llvm/test/Transforms/InstCombine/select.ll index 278cabdff9ed3..05fcf66235295 100644 --- a/llvm/test/Transforms/InstCombine/select.ll +++ b/llvm/test/Transforms/InstCombine/select.ll @@ -3693,6 +3693,800 @@ exit: ret i32 %rem } +; Select icmp and/or/xor +; https://alive2.llvm.org/ce/z/QXQDwF +; X&Y==C?X|Y:X^Y, X&Y==C?X^Y:X|Y +; TODO: X&Y==0 could imply no_common_bit to TrueValue +define i32 @src_and_eq_0_or_xor(i32 %x, i32 %y) { +; CHECK-LABEL: @src_and_eq_0_or_xor( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[AND:%.*]] = and i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 0 +; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y]], [[X]] +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[Y]], [[X]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[OR]], i32 [[XOR]] +; CHECK-NEXT: ret i32 [[COND]] +; +entry: + %and = and i32 %y, %x + %cmp = icmp eq i32 %and, 0 + %or = or i32 %y, %x + %xor = xor i32 %y, %x + %cond = select i1 %cmp, i32 %or, i32 %xor + ret i32 %cond +} + +; TODO: X&Y==0 could imply no_common_bit to TrueValue +define i32 @src_and_eq_0_xor_or(i32 %x, i32 %y) { +; CHECK-LABEL: @src_and_eq_0_xor_or( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[AND:%.*]] = and i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 0 +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[Y]], [[X]] +; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y]], [[X]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[XOR]], i32 [[OR]] +; CHECK-NEXT: ret i32 [[COND]] +; +entry: + %and = and i32 %y, %x + %cmp = icmp eq i32 %and, 0 + %xor = xor i32 %y, %x + %or = or i32 %y, %x + %cond = select i1 %cmp, i32 %xor, i32 %or + ret i32 %cond +} + +; TODO: X&Y==-1 could imply all_common_bit to TrueValue +define i32 @src_and_eq_neg1_or_xor(i32 %x, i32 %y) { +; CHECK-LABEL: @src_and_eq_neg1_or_xor( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[AND:%.*]] = and i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], -1 +; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y]], [[X]] +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[Y]], [[X]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[OR]], i32 [[XOR]] +; CHECK-NEXT: ret i32 [[COND]] +; +entry: + %and = and i32 %y, %x + %cmp = icmp eq i32 %and, -1 + %or = or i32 %y, %x + %xor = xor i32 %y, %x + %cond = select i1 %cmp, i32 %or, i32 %xor + ret i32 %cond +} + +; TODO: X&Y==-1 could imply all_common_bit to TrueValue +define i32 @src_and_eq_neg1_xor_or(i32 %x, i32 %y) { +; CHECK-LABEL: @src_and_eq_neg1_xor_or( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[AND:%.*]] = and i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], -1 +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[Y]], [[X]] +; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y]], [[X]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[XOR]], i32 [[OR]] +; CHECK-NEXT: ret i32 [[COND]] +; +entry: + %and = and i32 %y, %x + %cmp = icmp eq i32 %and, -1 + %xor = xor i32 %y, %x + %or = or i32 %y, %x + %cond = select i1 %cmp, i32 %xor, i32 %or + ret i32 %cond +} + +define i32 @src_and_eq_C_or_xororC(i32 %x, i32 %y, i32 %c) { +; CHECK-LABEL: @src_and_eq_C_or_xororC( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[OR1:%.*]] = or i32 [[XOR]], [[C:%.*]] +; CHECK-NEXT: ret i32 [[OR1]] +; +entry: + %and = and i32 %y, %x + %cmp = icmp eq i32 %and, %c + %or = or i32 %y, %x + %xor = xor i32 %y, %x + %or1 = or i32 %xor, %c + %cond = select i1 %cmp, i32 %or, i32 %or1 + ret i32 %cond +} + +define i32 @src_and_eq_C_or_xorxorC(i32 %x, i32 %y, i32 %c) { +; CHECK-LABEL: @src_and_eq_C_or_xorxorC( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[XOR]], [[C:%.*]] +; CHECK-NEXT: ret i32 [[XOR1]] +; +entry: + %and = and i32 %y, %x + %cmp = icmp eq i32 %and, %c + %or = or i32 %y, %x + %xor = xor i32 %y, %x + %xor1 = xor i32 %xor, %c + %cond = select i1 %cmp, i32 %or, i32 %xor1 + ret i32 %cond +} + +define i32 @src_and_eq_C_xor_OrAndNotC(i32 %x, i32 %y, i32 %c) { +; CHECK-LABEL: @src_and_eq_C_xor_OrAndNotC( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[C:%.*]], -1 +; CHECK-NEXT: [[AND1:%.*]] = and i32 [[OR]], [[NOT]] +; CHECK-NEXT: ret i32 [[AND1]] +; +entry: + %and = and i32 %y, %x + %cmp = icmp eq i32 %and, %c + %xor = xor i32 %y, %x + %or = or i32 %y, %x + %not = xor i32 %c, -1 + %and1 = and i32 %or, %not + %cond = select i1 %cmp, i32 %xor, i32 %and1 + ret i32 %cond +} + +define i32 @src_and_eq_C_xor_orxorC(i32 %x, i32 %y, i32 %c) { +; CHECK-LABEL: @src_and_eq_C_xor_orxorC( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[OR]], [[C:%.*]] +; CHECK-NEXT: ret i32 [[XOR1]] +; +entry: + %and = and i32 %y, %x + %cmp = icmp eq i32 %and, %c + %xor = xor i32 %y, %x + %or = or i32 %y, %x + %xor1 = xor i32 %or, %c + %cond = select i1 %cmp, i32 %xor, i32 %xor1 + ret i32 %cond +} + +; https://alive2.llvm.org/ce/z/9RPwfN +; X|Y==C?X&Y:X^Y, X|Y==C?X^Y:X&Y +; TODO: X|Y==0 could imply no_common_bit to TrueValue +define i32 @src_or_eq_0_and_xor(i32 %x, i32 %y) { +; CHECK-LABEL: @src_or_eq_0_and_xor( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[OR]], 0 +; CHECK-NEXT: [[AND:%.*]] = and i32 [[Y]], [[X]] +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[Y]], [[X]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[AND]], i32 [[XOR]] +; CHECK-NEXT: ret i32 [[COND]] +; +entry: + %or = or i32 %y, %x + %cmp = icmp eq i32 %or, 0 + %and = and i32 %y, %x + %xor = xor i32 %y, %x + %cond = select i1 %cmp, i32 %and, i32 %xor + ret i32 %cond +} + +; TODO: X|Y==0 could imply no_common_bit to TrueValue +define i32 @src_or_eq_0_xor_and(i32 %x, i32 %y) { +; CHECK-LABEL: @src_or_eq_0_xor_and( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[OR]], 0 +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[Y]], [[X]] +; CHECK-NEXT: [[AND:%.*]] = and i32 [[Y]], [[X]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[XOR]], i32 [[AND]] +; CHECK-NEXT: ret i32 [[COND]] +; +entry: + %or = or i32 %y, %x + %cmp = icmp eq i32 %or, 0 + %xor = xor i32 %y, %x + %and = and i32 %y, %x + %cond = select i1 %cmp, i32 %xor, i32 %and + ret i32 %cond +} + +define i32 @src_or_eq_neg1_and_xor(i32 %x, i32 %y) { +; CHECK-LABEL: @src_or_eq_neg1_and_xor( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[TMP0:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[TMP0]], -1 +; CHECK-NEXT: ret i32 [[NOT]] +; +entry: + %or = or i32 %y, %x + %cmp = icmp eq i32 %or, -1 + %and = and i32 %y, %x + %0 = xor i32 %x, %y + %not = xor i32 %0, -1 + %cond = select i1 %cmp, i32 %and, i32 %not + ret i32 %cond +} + +define i32 @src_or_eq_neg1_xor_and(i32 %x, i32 %y) { +; CHECK-LABEL: @src_or_eq_neg1_xor_and( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[AND:%.*]] = and i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[AND]], -1 +; CHECK-NEXT: ret i32 [[NOT]] +; +entry: + %or = or i32 %y, %x + %cmp = icmp eq i32 %or, -1 + %xor = xor i32 %y, %x + %and = and i32 %y, %x + %not = xor i32 %and, -1 + %cond = select i1 %cmp, i32 %xor, i32 %not + ret i32 %cond +} + +define i32 @src_or_eq_C_and_xorC(i32 %x, i32 %y, i32 %c) { +; CHECK-LABEL: @src_or_eq_C_and_xorC( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[XOR]], [[C:%.*]] +; CHECK-NEXT: ret i32 [[XOR1]] +; +entry: + %or = or i32 %y, %x + %cmp = icmp eq i32 %or, %c + %and = and i32 %y, %x + %xor = xor i32 %y, %x + %xor1 = xor i32 %xor, %c + %cond = select i1 %cmp, i32 %and, i32 %xor1 + ret i32 %cond +} + +define i32 @src_or_eq_C_and_andnotxorC(i32 %x, i32 %y, i32 %c) { +; CHECK-LABEL: @src_or_eq_C_and_andnotxorC( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[TMP0:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[TMP0]], -1 +; CHECK-NEXT: [[AND1:%.*]] = and i32 [[NOT]], [[C:%.*]] +; CHECK-NEXT: ret i32 [[AND1]] +; +entry: + %or = or i32 %y, %x + %cmp = icmp eq i32 %or, %c + %and = and i32 %y, %x + %0 = xor i32 %x, %y + %not = xor i32 %0, -1 + %and1 = and i32 %not, %c + %cond = select i1 %cmp, i32 %and, i32 %and1 + ret i32 %cond +} + +define i32 @src_or_eq_C_xor_xorandC(i32 %x, i32 %y, i32 %c) { +; CHECK-LABEL: @src_or_eq_C_xor_xorandC( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[AND:%.*]] = and i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[AND]], [[C:%.*]] +; CHECK-NEXT: ret i32 [[XOR1]] +; +entry: + %or = or i32 %y, %x + %cmp = icmp eq i32 %or, %c + %xor = xor i32 %y, %x + %and = and i32 %y, %x + %xor1 = xor i32 %and, %c + %cond = select i1 %cmp, i32 %xor, i32 %xor1 + ret i32 %cond +} + +define i32 @src_or_eq_C_xor_andnotandC(i32 %x, i32 %y, i32 %c) { +; CHECK-LABEL: @src_or_eq_C_xor_andnotandC( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[AND:%.*]] = and i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[AND]], -1 +; CHECK-NEXT: [[AND1:%.*]] = and i32 [[NOT]], [[C:%.*]] +; CHECK-NEXT: ret i32 [[AND1]] +; +entry: + %or = or i32 %y, %x + %cmp = icmp eq i32 %or, %c + %xor = xor i32 %y, %x + %and = and i32 %y, %x + %not = xor i32 %and, -1 + %and1 = and i32 %not, %c + %cond = select i1 %cmp, i32 %xor, i32 %and1 + ret i32 %cond +} + +; https://alive2.llvm.org/ce/z/c6oXi4 +; X^Y==C?X&Y:X|Y, X^Y==C?X|Y:X&Y +define i32 @src_xor_eq_neg1_and(i32 %x, i32 %y) { +; CHECK-LABEL: @src_xor_eq_neg1_and( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[OR]], -1 +; CHECK-NEXT: ret i32 [[NOT]] +; +entry: + %xor = xor i32 %y, %x + %cmp = icmp eq i32 %xor, -1 + %and = and i32 %y, %x + %or = or i32 %y, %x + %not = xor i32 %or, -1 + %cond = select i1 %cmp, i32 %and, i32 %not + ret i32 %cond +} + +; TODO: X^Y==-1 could imply no_common_bit to TrueValue +define i32 @src_xor_eq_neg1_or(i32 %x, i32 %y) { +; CHECK-LABEL: @src_xor_eq_neg1_or( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[XOR]], -1 +; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y]], [[X]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[OR]], i32 -1 +; CHECK-NEXT: ret i32 [[COND]] +; +entry: + %xor = xor i32 %y, %x + %cmp = icmp eq i32 %xor, -1 + %or = or i32 %y, %x + %cond = select i1 %cmp, i32 %or, i32 -1 + ret i32 %cond +} + +define i32 @src_xor_eq_C_and_xororC(i32 %x, i32 %y, i32 %c) { +; CHECK-LABEL: @src_xor_eq_C_and_xororC( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[OR]], [[C:%.*]] +; CHECK-NEXT: ret i32 [[XOR1]] +; +entry: + %xor = xor i32 %y, %x + %cmp = icmp eq i32 %xor, %c + %and = and i32 %y, %x + %or = or i32 %y, %x + %xor1 = xor i32 %or, %c + %cond = select i1 %cmp, i32 %and, i32 %xor1 + ret i32 %cond +} + +define i32 @src_xor_eq_C_and_andornotC(i32 %x, i32 %y, i32 %c) { +; CHECK-LABEL: @src_xor_eq_C_and_andornotC( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[C:%.*]], -1 +; CHECK-NEXT: [[AND1:%.*]] = and i32 [[OR]], [[NOT]] +; CHECK-NEXT: ret i32 [[AND1]] +; +entry: + %xor = xor i32 %y, %x + %cmp = icmp eq i32 %xor, %c + %and = and i32 %y, %x + %or = or i32 %y, %x + %not = xor i32 %c, -1 + %and1 = and i32 %or, %not + %cond = select i1 %cmp, i32 %and, i32 %and1 + ret i32 %cond +} + +define i32 @src_xor_eq_C_or_xorandC(i32 %x, i32 %y, i32 %c) { +; CHECK-LABEL: @src_xor_eq_C_or_xorandC( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[AND:%.*]] = and i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[AND]], [[C:%.*]] +; CHECK-NEXT: ret i32 [[XOR1]] +; +entry: + %xor = xor i32 %y, %x + %cmp = icmp eq i32 %xor, %c + %or = or i32 %y, %x + %and = and i32 %y, %x + %xor1 = xor i32 %and, %c + %cond = select i1 %cmp, i32 %or, i32 %xor1 + ret i32 %cond +} + +define i32 @src_xor_eq_C_or_orandC(i32 %x, i32 %y, i32 %c) { +; CHECK-LABEL: @src_xor_eq_C_or_orandC( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[AND:%.*]] = and i32 [[Y:%.*]], [[X:%.*]] +; CHECK-NEXT: [[OR1:%.*]] = or i32 [[AND]], [[C:%.*]] +; CHECK-NEXT: ret i32 [[OR1]] +; +entry: + %xor = xor i32 %y, %x + %cmp = icmp eq i32 %xor, %c + %or = or i32 %y, %x + %and = and i32 %y, %x + %or1 = or i32 %and, %c + %cond = select i1 %cmp, i32 %or, i32 %or1 + ret i32 %cond +} + +; Select icmp and/or/xor +; NO TRANSFORMED - select condition is compare with not 0 +define i32 @src_select_and_min_positive_int(i32 %x, i32 %y) { +; CHECK-LABEL: @src_select_and_min_positive_int( +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[AND0:%.*]] = icmp eq i32 [[AND]], 1 +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X]], [[Y]] +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[AND0]], i32 [[OR]], i32 [[XOR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %and = and i32 %x, %y + %and0 = icmp eq i32 %and, 1 + %xor = xor i32 %x, %y + %or = or i32 %x, %y + %cond = select i1 %and0, i32 %or, i32 %xor + ret i32 %cond +} + +define i32 @src_select_and_max_positive_int(i32 %x, i32 %y) { +; CHECK-LABEL: @src_select_and_max_positive_int( +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[AND0:%.*]] = icmp eq i32 [[AND]], 2147483647 +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X]], [[Y]] +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[AND0]], i32 [[OR]], i32 [[XOR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %and = and i32 %x, %y + %and0 = icmp eq i32 %and, 2147483647 + %xor = xor i32 %x, %y + %or = or i32 %x, %y + %cond = select i1 %and0, i32 %or, i32 %xor + ret i32 %cond +} + +define i32 @src_select_and_min_negative_int(i32 %x, i32 %y) { +; CHECK-LABEL: @src_select_and_min_negative_int( +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[AND0:%.*]] = icmp eq i32 [[AND]], -2147483648 +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X]], [[Y]] +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[AND0]], i32 [[OR]], i32 [[XOR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %and = and i32 %x, %y + %and0 = icmp eq i32 %and, -2147483648 + %xor = xor i32 %x, %y + %or = or i32 %x, %y + %cond = select i1 %and0, i32 %or, i32 %xor + ret i32 %cond +} + +define i32 @src_select_or_min_positive_int(i32 %x, i32 %y) { +; CHECK-LABEL: @src_select_or_min_positive_int( +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[OR0:%.*]] = icmp eq i32 [[OR]], 1 +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X]], [[Y]] +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[OR0]], i32 [[AND]], i32 [[XOR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %or = or i32 %x, %y + %or0 = icmp eq i32 %or, 1 + %and = and i32 %x, %y + %xor = xor i32 %x, %y + %cond = select i1 %or0, i32 %and, i32 %xor + ret i32 %cond +} + +define i32 @src_select_or_max_positive_int(i32 %x, i32 %y) { +; CHECK-LABEL: @src_select_or_max_positive_int( +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[OR0:%.*]] = icmp eq i32 [[OR]], 2147483647 +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X]], [[Y]] +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[OR0]], i32 [[AND]], i32 [[XOR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %or = or i32 %x, %y + %or0 = icmp eq i32 %or, 2147483647 + %and = and i32 %x, %y + %xor = xor i32 %x, %y + %cond = select i1 %or0, i32 %and, i32 %xor + ret i32 %cond +} + +define i32 @src_select_or_min_negative_int(i32 %x, i32 %y) { +; CHECK-LABEL: @src_select_or_min_negative_int( +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[OR0:%.*]] = icmp eq i32 [[OR]], -2147483648 +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X]], [[Y]] +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[OR0]], i32 [[AND]], i32 [[XOR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %or = or i32 %x, %y + %or0 = icmp eq i32 %or, -2147483648 + %and = and i32 %x, %y + %xor = xor i32 %x, %y + %cond = select i1 %or0, i32 %and, i32 %xor + ret i32 %cond +} + +define i32 @src_select_or_max_negative_int(i32 %x, i32 %y) { +; CHECK-LABEL: @src_select_or_max_negative_int( +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[OR0:%.*]] = icmp eq i32 [[OR]], -1 +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X]], [[Y]] +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[OR0]], i32 [[AND]], i32 [[XOR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %or = or i32 %x, %y + %or0 = icmp eq i32 %or, -1 + %and = and i32 %x, %y + %xor = xor i32 %x, %y + %cond = select i1 %or0, i32 %and, i32 %xor + ret i32 %cond +} + +define i32 @src_select_xor_min_positive_int(i32 %x, i32 %y) { +; CHECK-LABEL: @src_select_xor_min_positive_int( +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[XOR0:%.*]] = icmp eq i32 [[XOR]], 1 +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X]], [[Y]] +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[XOR0]], i32 [[AND]], i32 [[OR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %xor = xor i32 %x, %y + %xor0 = icmp eq i32 %xor, 1 + %and = and i32 %x, %y + %or = or i32 %x, %y + %cond = select i1 %xor0, i32 %and, i32 %or + ret i32 %cond +} + +define i32 @src_select_xor_max_positive_int(i32 %x, i32 %y) { +; CHECK-LABEL: @src_select_xor_max_positive_int( +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[XOR0:%.*]] = icmp eq i32 [[XOR]], 2147483647 +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X]], [[Y]] +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[XOR0]], i32 [[AND]], i32 [[OR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %xor = xor i32 %x, %y + %xor0 = icmp eq i32 %xor, 2147483647 + %and = and i32 %x, %y + %or = or i32 %x, %y + %cond = select i1 %xor0, i32 %and, i32 %or + ret i32 %cond +} + +define i32 @src_select_xor_min_negative_int(i32 %x, i32 %y) { +; CHECK-LABEL: @src_select_xor_min_negative_int( +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[XOR0:%.*]] = icmp eq i32 [[XOR]], -2147483648 +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X]], [[Y]] +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[XOR0]], i32 [[AND]], i32 [[OR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %xor = xor i32 %x, %y + %xor0 = icmp eq i32 %xor, -2147483648 + %and = and i32 %x, %y + %or = or i32 %x, %y + %cond = select i1 %xor0, i32 %and, i32 %or + ret i32 %cond +} + +define i32 @src_select_xor_max_negative_int(i32 %x, i32 %y) { +; CHECK-LABEL: @src_select_xor_max_negative_int( +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[XOR0:%.*]] = icmp eq i32 [[XOR]], -1 +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X]], [[Y]] +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[XOR0]], i32 [[AND]], i32 [[OR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %xor = xor i32 %x, %y + %xor0 = icmp eq i32 %xor, -1 + %and = and i32 %x, %y + %or = or i32 %x, %y + %cond = select i1 %xor0, i32 %and, i32 %or + ret i32 %cond +} + +; Select icmp and/or/xor +; https://alive2.llvm.org/ce/z/BVgrJ- +; NO TRANSFORMED - not supported +define i32 @src_no_trans_select_and_eq0_and_or(i32 %x, i32 %y) { +; CHECK-LABEL: @src_no_trans_select_and_eq0_and_or( +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[AND0:%.*]] = icmp eq i32 [[AND]], 0 +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[AND0]], i32 0, i32 [[OR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %and = and i32 %x, %y + %and0 = icmp eq i32 %and, 0 + %or = or i32 %x, %y + %cond = select i1 %and0, i32 %and, i32 %or + ret i32 %cond +} + +define i32 @src_no_trans_select_and_eq0_and_xor(i32 %x, i32 %y) { +; CHECK-LABEL: @src_no_trans_select_and_eq0_and_xor( +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[AND0:%.*]] = icmp eq i32 [[AND]], 0 +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[AND0]], i32 0, i32 [[XOR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %and = and i32 %x, %y + %and0 = icmp eq i32 %and, 0 + %xor = xor i32 %x, %y + %cond = select i1 %and0, i32 %and, i32 %xor + ret i32 %cond +} + +define i32 @src_no_trans_select_and_eq0_or_and(i32 %x, i32 %y) { +; CHECK-LABEL: @src_no_trans_select_and_eq0_or_and( +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[AND0:%.*]] = icmp eq i32 [[AND]], 0 +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[AND0]], i32 [[OR]], i32 [[AND]] +; CHECK-NEXT: ret i32 [[COND]] +; + %and = and i32 %x, %y + %and0 = icmp eq i32 %and, 0 + %or = or i32 %x, %y + %cond = select i1 %and0, i32 %or, i32 %and + ret i32 %cond +} + +define i32 @src_no_trans_select_and_eq0_xor_and(i32 %x, i32 %y) { +; CHECK-LABEL: @src_no_trans_select_and_eq0_xor_and( +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[AND0:%.*]] = icmp eq i32 [[AND]], 0 +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[AND0]], i32 [[XOR]], i32 [[AND]] +; CHECK-NEXT: ret i32 [[COND]] +; + %and = and i32 %x, %y + %and0 = icmp eq i32 %and, 0 + %xor = xor i32 %x, %y + %cond = select i1 %and0, i32 %xor, i32 %and + ret i32 %cond +} + +define i32 @src_no_trans_select_or_eq0_or_and(i32 %x, i32 %y) { +; CHECK-LABEL: @src_no_trans_select_or_eq0_or_and( +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[OR0:%.*]] = icmp eq i32 [[OR]], 0 +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[OR0]], i32 0, i32 [[AND]] +; CHECK-NEXT: ret i32 [[COND]] +; + %or = or i32 %x, %y + %or0 = icmp eq i32 %or, 0 + %and = and i32 %x, %y + %cond = select i1 %or0, i32 %or, i32 %and + ret i32 %cond +} + +define i32 @src_no_trans_select_or_eq0_or_xor(i32 %x, i32 %y) { +; CHECK-LABEL: @src_no_trans_select_or_eq0_or_xor( +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[OR0:%.*]] = icmp eq i32 [[OR]], 0 +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[OR0]], i32 0, i32 [[XOR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %or = or i32 %x, %y + %or0 = icmp eq i32 %or, 0 + %xor = xor i32 %x, %y + %cond = select i1 %or0, i32 %or, i32 %xor + ret i32 %cond +} + +define i32 @src_no_trans_select_or_eq0_and_or(i32 %x, i32 %y) { +; CHECK-LABEL: @src_no_trans_select_or_eq0_and_or( +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[OR0:%.*]] = icmp eq i32 [[OR]], 0 +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[OR0]], i32 [[AND]], i32 [[OR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %or = or i32 %x, %y + %or0 = icmp eq i32 %or, 0 + %and = and i32 %x, %y + %cond = select i1 %or0, i32 %and, i32 %or + ret i32 %cond +} + +define i32 @src_no_trans_select_or_eq0_xor_or(i32 %x, i32 %y) { +; CHECK-LABEL: @src_no_trans_select_or_eq0_xor_or( +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[OR0:%.*]] = icmp eq i32 [[OR]], 0 +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[OR0]], i32 [[XOR]], i32 [[OR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %or = or i32 %x, %y + %or0 = icmp eq i32 %or, 0 + %xor = xor i32 %x, %y + %cond = select i1 %or0, i32 %xor, i32 %or + ret i32 %cond +} + +define i32 @src_no_trans_select_and_ne0_xor_or(i32 %x, i32 %y) { +; CHECK-LABEL: @src_no_trans_select_and_ne0_xor_or( +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[OR0_NOT:%.*]] = icmp eq i32 [[OR]], 0 +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[OR0_NOT]], i32 0, i32 [[XOR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %or = or i32 %x, %y + %or0 = icmp ne i32 %or, 0 + %xor = xor i32 %x, %y + %cond = select i1 %or0, i32 %xor, i32 %or + ret i32 %cond +} + +define i32 @src_no_trans_select_xor_eq0_xor_and(i32 %x, i32 %y) { +; CHECK-LABEL: @src_no_trans_select_xor_eq0_xor_and( +; CHECK-NEXT: [[XOR0:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[XOR0]], i32 0, i32 [[AND]] +; CHECK-NEXT: ret i32 [[COND]] +; + %xor = xor i32 %x, %y + %xor0 = icmp eq i32 %xor, 0 + %and = and i32 %x, %y + %cond = select i1 %xor0, i32 %xor, i32 %and + ret i32 %cond +} + +define i32 @src_no_trans_select_xor_eq0_xor_or(i32 %x, i32 %y) { +; CHECK-LABEL: @src_no_trans_select_xor_eq0_xor_or( +; CHECK-NEXT: [[XOR0:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[XOR0]], i32 0, i32 [[OR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %xor = xor i32 %x, %y + %xor0 = icmp eq i32 %xor, 0 + %or = or i32 %x, %y + %cond = select i1 %xor0, i32 %xor, i32 %or + ret i32 %cond +} + +define i32 @src_no_trans_select_xor_eq0_and_xor(i32 %x, i32 %y) { +; CHECK-LABEL: @src_no_trans_select_xor_eq0_and_xor( +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[XOR0:%.*]] = icmp eq i32 [[XOR]], 0 +; CHECK-NEXT: [[AND:%.*]] = and i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[XOR0]], i32 [[AND]], i32 [[XOR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %xor = xor i32 %x, %y + %xor0 = icmp eq i32 %xor, 0 + %and = and i32 %x, %y + %cond = select i1 %xor0, i32 %and, i32 %xor + ret i32 %cond +} + +; https://alive2.llvm.org/ce/z/SBe8ei +define i32 @src_no_trans_select_xor_eq0_or_xor(i32 %x, i32 %y) { +; CHECK-LABEL: @src_no_trans_select_xor_eq0_or_xor( +; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[XOR0:%.*]] = icmp eq i32 [[XOR]], 0 +; CHECK-NEXT: [[OR:%.*]] = or i32 [[X]], [[Y]] +; CHECK-NEXT: [[COND:%.*]] = select i1 [[XOR0]], i32 [[OR]], i32 [[XOR]] +; CHECK-NEXT: ret i32 [[COND]] +; + %xor = xor i32 %x, %y + %xor0 = icmp eq i32 %xor, 0 + %or = or i32 %x, %y + %cond = select i1 %xor0, i32 %or, i32 %xor + ret i32 %cond +} + ; (X == C) ? X : Y -> (X == C) ? C : Y ; Fixed #77553 define i32 @src_select_xxory_eq0_xorxy_y(i32 %x, i32 %y) {