1; RUN: opt -S -instcombine < %s | FileCheck %s 2 3define <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 13define <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 23define <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 35define 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 48define <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 61define 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 75define <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