1 ; RUN: opt -S -instcombine < %s | FileCheck %s 2 3 define <4 x i32> @test_FoldShiftByConstant_CreateSHL(<4 x i32> %in) { 4 ; CHECK-LABEL: @test_FoldShiftByConstant_CreateSHL( 5 ; CHECK-NEXT: [[VSHL_N:%.*]] = mul <4 x i32> %in, <i32 0, i32 -32, i32 0, i32 -32> 6 ; CHECK-NEXT: ret <4 x i32> [[VSHL_N]] 7 ; 8 %mul.i = mul <4 x i32> %in, <i32 0, i32 -1, i32 0, i32 -1> 9 %vshl_n = shl <4 x i32> %mul.i, <i32 5, i32 5, i32 5, i32 5> 10 ret <4 x i32> %vshl_n 11 } 12 13 define <8 x i16> @test_FoldShiftByConstant_CreateSHL2(<8 x i16> %in) { 14 ; CHECK-LABEL: @test_FoldShiftByConstant_CreateSHL2( 15 ; CHECK-NEXT: [[VSHL_N:%.*]] = mul <8 x i16> %in, <i16 0, i16 -32, i16 0, i16 -32, i16 0, i16 -32, i16 0, i16 -32> 16 ; CHECK-NEXT: ret <8 x i16> [[VSHL_N]] 17 ; 18 %mul.i = mul <8 x i16> %in, <i16 0, i16 -1, i16 0, i16 -1, i16 0, i16 -1, i16 0, i16 -1> 19 %vshl_n = shl <8 x i16> %mul.i, <i16 5, i16 5, i16 5, i16 5, i16 5, i16 5, i16 5, i16 5> 20 ret <8 x i16> %vshl_n 21 } 22 23 define <16 x i8> @test_FoldShiftByConstant_CreateAnd(<16 x i8> %in0) { 24 ; CHECK-LABEL: @test_FoldShiftByConstant_CreateAnd( 25 ; CHECK-NEXT: [[VSRA_N2:%.*]] = mul <16 x i8> %in0, <i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33> 26 ; CHECK-NEXT: [[VSHL_N:%.*]] = and <16 x i8> [[VSRA_N2]], <i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32> 27 ; CHECK-NEXT: ret <16 x i8> [[VSHL_N]] 28 ; 29 %vsra_n = ashr <16 x i8> %in0, <i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5> 30 %tmp = add <16 x i8> %in0, %vsra_n 31 %vshl_n = shl <16 x i8> %tmp, <i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5> 32 ret <16 x i8> %vshl_n 33 } 34 35 define i32 @bar(i32 %x, i32 %y) { 36 ; CHECK-LABEL: @bar( 37 ; CHECK-NEXT: [[B1:%.*]] = shl i32 %y, 4 38 ; CHECK-NEXT: [[A2:%.*]] = add i32 [[B1]], %x 39 ; CHECK-NEXT: [[C:%.*]] = and i32 [[A2]], -16 40 ; CHECK-NEXT: ret i32 [[C]] 41 ; 42 %a = lshr i32 %x, 4 43 %b = add i32 %a, %y 44 %c = shl i32 %b, 4 45 ret i32 %c 46 } 47 48 define <2 x i32> @bar_v2i32(<2 x i32> %x, <2 x i32> %y) { 49 ; CHECK-LABEL: @bar_v2i32( 50 ; CHECK-NEXT: [[B1:%.*]] = shl <2 x i32> %y, <i32 5, i32 5> 51 ; CHECK-NEXT: [[A2:%.*]] = add <2 x i32> [[B1]], %x 52 ; CHECK-NEXT: [[C:%.*]] = and <2 x i32> [[A2]], <i32 -32, i32 -32> 53 ; CHECK-NEXT: ret <2 x i32> [[C]] 54 ; 55 %a = lshr <2 x i32> %x, <i32 5, i32 5> 56 %b = add <2 x i32> %a, %y 57 %c = shl <2 x i32> %b, <i32 5, i32 5> 58 ret <2 x i32> %c 59 } 60 61 define i32 @foo(i32 %x, i32 %y) { 62 ; CHECK-LABEL: @foo( 63 ; CHECK-NEXT: [[C1:%.*]] = shl i32 %y, 4 64 ; CHECK-NEXT: [[X_MASK:%.*]] = and i32 %x, 128 65 ; CHECK-NEXT: [[D:%.*]] = add i32 [[X_MASK]], [[C1]] 66 ; CHECK-NEXT: ret i32 [[D]] 67 ; 68 %a = lshr i32 %x, 4 69 %b = and i32 %a, 8 70 %c = add i32 %b, %y 71 %d = shl i32 %c, 4 72 ret i32 %d 73 } 74 75 define <2 x i32> @foo_v2i32(<2 x i32> %x, <2 x i32> %y) { 76 ; CHECK-LABEL: @foo_v2i32( 77 ; CHECK-NEXT: [[A:%.*]] = lshr <2 x i32> %x, <i32 4, i32 4> 78 ; CHECK-NEXT: [[B:%.*]] = and <2 x i32> [[A]], <i32 8, i32 8> 79 ; CHECK-NEXT: [[C:%.*]] = add <2 x i32> [[B]], %y 80 ; CHECK-NEXT: [[D:%.*]] = shl <2 x i32> [[C]], <i32 4, i32 4> 81 ; CHECK-NEXT: ret <2 x i32> [[D]] 82 ; 83 %a = lshr <2 x i32> %x, <i32 4, i32 4> 84 %b = and <2 x i32> %a, <i32 8, i32 8> 85 %c = add <2 x i32> %b, %y 86 %d = shl <2 x i32> %c, <i32 4, i32 4> 87 ret <2 x i32> %d 88 } 89 90
