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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 i64 @t0(i64 %x) {5; CHECK-LABEL: @t0(6; CHECK-NEXT: [[T0_NEG:%.*]] = ashr i64 [[X:%.*]], 637; CHECK-NEXT: ret i64 [[T0_NEG]]8;9 %t0 = lshr i64 %x, 6310 %r = sub i64 0, %t011 ret i64 %r12}13define i64 @t0_exact(i64 %x) {14; CHECK-LABEL: @t0_exact(15; CHECK-NEXT: [[T0_NEG:%.*]] = ashr exact i64 [[X:%.*]], 6316; CHECK-NEXT: ret i64 [[T0_NEG]]17;18 %t0 = lshr exact i64 %x, 6319 %r = sub i64 0, %t020 ret i64 %r21}22define i64 @t2(i64 %x) {23; CHECK-LABEL: @t2(24; CHECK-NEXT: [[T0_NEG:%.*]] = lshr i64 [[X:%.*]], 6325; CHECK-NEXT: ret i64 [[T0_NEG]]26;27 %t0 = ashr i64 %x, 6328 %r = sub i64 0, %t029 ret i64 %r30}31define i64 @t3_exact(i64 %x) {32; CHECK-LABEL: @t3_exact(33; CHECK-NEXT: [[T0_NEG:%.*]] = lshr exact i64 [[X:%.*]], 6334; CHECK-NEXT: ret i64 [[T0_NEG]]35;36 %t0 = ashr exact i64 %x, 6337 %r = sub i64 0, %t038 ret i64 %r39}40 41define <2 x i64> @t4(<2 x i64> %x) {42; CHECK-LABEL: @t4(43; CHECK-NEXT: [[T0_NEG:%.*]] = ashr <2 x i64> [[X:%.*]], splat (i64 63)44; CHECK-NEXT: ret <2 x i64> [[T0_NEG]]45;46 %t0 = lshr <2 x i64> %x, <i64 63, i64 63>47 %r = sub <2 x i64> zeroinitializer, %t048 ret <2 x i64> %r49}50 51define <2 x i64> @t5(<2 x i64> %x) {52; CHECK-LABEL: @t5(53; CHECK-NEXT: [[T0:%.*]] = lshr <2 x i64> [[X:%.*]], <i64 63, i64 undef>54; CHECK-NEXT: [[R:%.*]] = sub <2 x i64> <i64 0, i64 undef>, [[T0]]55; CHECK-NEXT: ret <2 x i64> [[R]]56;57 %t0 = lshr <2 x i64> %x, <i64 63, i64 undef>58 %r = sub <2 x i64> <i64 0, i64 undef>, %t059 ret <2 x i64> %r60}61 62declare void @use64(i64)63declare void @use32(i64)64 65define i64 @t6(i64 %x) {66; CHECK-LABEL: @t6(67; CHECK-NEXT: [[T0_NEG:%.*]] = ashr i64 [[X:%.*]], 6368; CHECK-NEXT: [[T0:%.*]] = lshr i64 [[X]], 6369; CHECK-NEXT: call void @use64(i64 [[T0]])70; CHECK-NEXT: ret i64 [[T0_NEG]]71;72 %t0 = lshr i64 %x, 6373 call void @use64(i64 %t0)74 %r = sub i64 0, %t075 ret i64 %r76}77 78define i64 @n7(i64 %x) {79; CHECK-LABEL: @n7(80; CHECK-NEXT: [[T0_NEG:%.*]] = ashr i64 [[X:%.*]], 6381; CHECK-NEXT: [[T0:%.*]] = lshr i64 [[X]], 6382; CHECK-NEXT: call void @use32(i64 [[T0]])83; CHECK-NEXT: ret i64 [[T0_NEG]]84;85 %t0 = lshr i64 %x, 6386 call void @use32(i64 %t0)87 %r = sub i64 0, %t088 ret i64 %r89}90 91define i64 @n8(i64 %x) {92; CHECK-LABEL: @n8(93; CHECK-NEXT: [[T0_NEG:%.*]] = ashr i64 [[X:%.*]], 6394; CHECK-NEXT: [[T0:%.*]] = lshr i64 [[X]], 6395; CHECK-NEXT: call void @use64(i64 [[T0]])96; CHECK-NEXT: call void @use32(i64 [[T0]])97; CHECK-NEXT: ret i64 [[T0_NEG]]98;99 %t0 = lshr i64 %x, 63100 call void @use64(i64 %t0)101 call void @use32(i64 %t0)102 %r = sub i64 0, %t0103 ret i64 %r104}105 106define i64 @n9(i64 %x) {107; CHECK-LABEL: @n9(108; CHECK-NEXT: [[T0:%.*]] = lshr i64 [[X:%.*]], 62109; CHECK-NEXT: [[R:%.*]] = sub nsw i64 0, [[T0]]110; CHECK-NEXT: ret i64 [[R]]111;112 %t0 = lshr i64 %x, 62113 %r = sub i64 0, %t0114 ret i64 %r115}116 117define i64 @n10(i64 %x) {118; CHECK-LABEL: @n10(119; CHECK-NEXT: [[ISNOTNEG:%.*]] = icmp sgt i64 [[X:%.*]], -1120; CHECK-NEXT: [[R:%.*]] = zext i1 [[ISNOTNEG]] to i64121; CHECK-NEXT: ret i64 [[R]]122;123 %t0 = lshr i64 %x, 63124 %r = sub i64 1, %t0125 ret i64 %r126}127