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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 @t0(i64 %x) {5; CHECK-LABEL: @t0(6; CHECK-NEXT: [[T0_NEG:%.*]] = ashr i64 [[X:%.*]], 637; CHECK-NEXT: [[T1_NEG:%.*]] = trunc nsw i64 [[T0_NEG]] to i328; CHECK-NEXT: ret i32 [[T1_NEG]]9;10 %t0 = lshr i64 %x, 6311 %t1 = trunc i64 %t0 to i3212 %r = sub i32 0, %t113 ret i32 %r14}15define i32 @t1_exact(i64 %x) {16; CHECK-LABEL: @t1_exact(17; CHECK-NEXT: [[T0_NEG:%.*]] = ashr exact i64 [[X:%.*]], 6318; CHECK-NEXT: [[T1_NEG:%.*]] = trunc nsw i64 [[T0_NEG]] to i3219; CHECK-NEXT: ret i32 [[T1_NEG]]20;21 %t0 = lshr exact i64 %x, 6322 %t1 = trunc i64 %t0 to i3223 %r = sub i32 0, %t124 ret i32 %r25}26define i32 @t2(i64 %x) {27; CHECK-LABEL: @t2(28; CHECK-NEXT: [[T0_NEG:%.*]] = lshr i64 [[X:%.*]], 6329; CHECK-NEXT: [[T1_NEG:%.*]] = trunc nuw nsw i64 [[T0_NEG]] to i3230; CHECK-NEXT: ret i32 [[T1_NEG]]31;32 %t0 = ashr i64 %x, 6333 %t1 = trunc i64 %t0 to i3234 %r = sub i32 0, %t135 ret i32 %r36}37define i32 @t3_exact(i64 %x) {38; CHECK-LABEL: @t3_exact(39; CHECK-NEXT: [[T0_NEG:%.*]] = lshr exact i64 [[X:%.*]], 6340; CHECK-NEXT: [[T1_NEG:%.*]] = trunc nuw nsw i64 [[T0_NEG]] to i3241; CHECK-NEXT: ret i32 [[T1_NEG]]42;43 %t0 = ashr exact i64 %x, 6344 %t1 = trunc i64 %t0 to i3245 %r = sub i32 0, %t146 ret i32 %r47}48 49define <2 x i32> @t4(<2 x i64> %x) {50; CHECK-LABEL: @t4(51; CHECK-NEXT: [[T0_NEG:%.*]] = ashr <2 x i64> [[X:%.*]], splat (i64 63)52; CHECK-NEXT: [[T1_NEG:%.*]] = trunc nsw <2 x i64> [[T0_NEG]] to <2 x i32>53; CHECK-NEXT: ret <2 x i32> [[T1_NEG]]54;55 %t0 = lshr <2 x i64> %x, <i64 63, i64 63>56 %t1 = trunc <2 x i64> %t0 to <2 x i32>57 %r = sub <2 x i32> zeroinitializer, %t158 ret <2 x i32> %r59}60 61define <2 x i32> @t5(<2 x i64> %x) {62; CHECK-LABEL: @t5(63; CHECK-NEXT: [[T0:%.*]] = lshr <2 x i64> [[X:%.*]], <i64 63, i64 undef>64; CHECK-NEXT: [[T1:%.*]] = trunc <2 x i64> [[T0]] to <2 x i32>65; CHECK-NEXT: [[R:%.*]] = sub <2 x i32> <i32 0, i32 undef>, [[T1]]66; CHECK-NEXT: ret <2 x i32> [[R]]67;68 %t0 = lshr <2 x i64> %x, <i64 63, i64 undef>69 %t1 = trunc <2 x i64> %t0 to <2 x i32>70 %r = sub <2 x i32> <i32 0, i32 undef>, %t171 ret <2 x i32> %r72}73 74declare void @use64(i64)75declare void @use32(i32)76 77define i32 @t6(i64 %x) {78; CHECK-LABEL: @t6(79; CHECK-NEXT: [[T0_NEG:%.*]] = ashr i64 [[X:%.*]], 6380; CHECK-NEXT: [[T0:%.*]] = lshr i64 [[X]], 6381; CHECK-NEXT: call void @use64(i64 [[T0]])82; CHECK-NEXT: [[T1_NEG:%.*]] = trunc nsw i64 [[T0_NEG]] to i3283; CHECK-NEXT: ret i32 [[T1_NEG]]84;85 %t0 = lshr i64 %x, 6386 call void @use64(i64 %t0)87 %t1 = trunc i64 %t0 to i3288 %r = sub i32 0, %t189 ret i32 %r90}91 92define i32 @n7(i64 %x) {93; CHECK-LABEL: @n7(94; CHECK-NEXT: [[T0:%.*]] = lshr i64 [[X:%.*]], 6395; CHECK-NEXT: [[T1:%.*]] = trunc nuw nsw i64 [[T0]] to i3296; CHECK-NEXT: call void @use32(i32 [[T1]])97; CHECK-NEXT: [[R:%.*]] = sub nsw i32 0, [[T1]]98; CHECK-NEXT: ret i32 [[R]]99;100 %t0 = lshr i64 %x, 63101 %t1 = trunc i64 %t0 to i32102 call void @use32(i32 %t1)103 %r = sub i32 0, %t1104 ret i32 %r105}106 107define i32 @n8(i64 %x) {108; CHECK-LABEL: @n8(109; CHECK-NEXT: [[T0:%.*]] = lshr i64 [[X:%.*]], 63110; CHECK-NEXT: call void @use64(i64 [[T0]])111; CHECK-NEXT: [[T1:%.*]] = trunc nuw nsw i64 [[T0]] to i32112; CHECK-NEXT: call void @use32(i32 [[T1]])113; CHECK-NEXT: [[R:%.*]] = sub nsw i32 0, [[T1]]114; CHECK-NEXT: ret i32 [[R]]115;116 %t0 = lshr i64 %x, 63117 call void @use64(i64 %t0)118 %t1 = trunc i64 %t0 to i32119 call void @use32(i32 %t1)120 %r = sub i32 0, %t1121 ret i32 %r122}123 124define i32 @n9(i64 %x) {125; CHECK-LABEL: @n9(126; CHECK-NEXT: [[T0:%.*]] = lshr i64 [[X:%.*]], 62127; CHECK-NEXT: [[T1:%.*]] = trunc nuw nsw i64 [[T0]] to i32128; CHECK-NEXT: [[R:%.*]] = sub nsw i32 0, [[T1]]129; CHECK-NEXT: ret i32 [[R]]130;131 %t0 = lshr i64 %x, 62132 %t1 = trunc i64 %t0 to i32133 %r = sub i32 0, %t1134 ret i32 %r135}136 137define i32 @n10(i64 %x) {138; CHECK-LABEL: @n10(139; CHECK-NEXT: [[T0_NEG:%.*]] = ashr i64 [[X:%.*]], 63140; CHECK-NEXT: [[T1_NEG:%.*]] = trunc nsw i64 [[T0_NEG]] to i32141; CHECK-NEXT: [[R:%.*]] = add nsw i32 [[T1_NEG]], 1142; CHECK-NEXT: ret i32 [[R]]143;144 %t0 = lshr i64 %x, 63145 %t1 = trunc i64 %t0 to i32146 %r = sub i32 1, %t1147 ret i32 %r148}149