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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt < %s -passes=instcombine -S | FileCheck %s3 4define i32 @factorize(i32 %x, i32 %y) {5; CHECK-LABEL: @factorize(6; CHECK-NEXT: ret i32 [[X:%.*]]7;8; (X | 1) & (X | 2) -> X | (1 & 2) -> X9 %l = or i32 %x, 110 %r = or i32 %x, 211 %z = and i32 %l, %r12 ret i32 %z13}14 15define i32 @factorize2(i32 %x) {16; CHECK-LABEL: @factorize2(17; CHECK-NEXT: ret i32 [[X:%.*]]18;19; 3*X - 2*X -> X20 %l = mul i32 3, %x21 %r = mul i32 2, %x22 %z = sub i32 %l, %r23 ret i32 %z24}25 26define i32 @factorize3(i32 %x, i32 %a, i32 %b) {27; CHECK-LABEL: @factorize3(28; CHECK-NEXT: [[Z:%.*]] = or i32 [[B:%.*]], [[X:%.*]]29; CHECK-NEXT: ret i32 [[Z]]30;31; (X | (A|B)) & (X | B) -> X | ((A|B) & B) -> X | B32 %aORb = or i32 %a, %b33 %l = or i32 %x, %aORb34 %r = or i32 %x, %b35 %z = and i32 %l, %r36 ret i32 %z37}38 39define i32 @factorize4(i32 %x, i32 %y) {40; CHECK-LABEL: @factorize4(41; CHECK-NEXT: [[S:%.*]] = mul i32 [[Y:%.*]], [[X:%.*]]42; CHECK-NEXT: ret i32 [[S]]43;44; ((Y << 1) * X) - (X * Y) -> (X * (Y * 2 - Y)) -> (X * Y)45 %sh = shl i32 %y, 146 %ml = mul i32 %sh, %x47 %mr = mul i32 %x, %y48 %s = sub i32 %ml, %mr49 ret i32 %s50}51 52define i32 @factorize5(i32 %x, i32 %y) {53; CHECK-LABEL: @factorize5(54; CHECK-NEXT: [[S:%.*]] = mul i32 [[Y:%.*]], [[X:%.*]]55; CHECK-NEXT: ret i32 [[S]]56;57; ((Y * 2) * X) - (X * Y) -> (X * Y)58 %sh = mul i32 %y, 259 %ml = mul i32 %sh, %x60 %mr = mul i32 %x, %y61 %s = sub i32 %ml, %mr62 ret i32 %s63}64 65define i32 @expand(i32 %x) {66; CHECK-LABEL: @expand(67; CHECK-NEXT: [[A:%.*]] = and i32 [[X:%.*]], 168; CHECK-NEXT: ret i32 [[A]]69;70; ((X & 1) | 2) & 1 -> ((X & 1) & 1) | (2 & 1) -> (X & 1) | 0 -> X & 171 %a = and i32 %x, 172 %b = or i32 %a, 273 %c = and i32 %b, 174 ret i32 %c75}76