1; RUN: opt -analyze -scalar-evolution -S < %s | FileCheck %s 2 3define i16 @test1(i8 %x) { 4 %A = zext i8 %x to i12 5 %B = sext i12 %A to i16 6; CHECK: zext i8 %x to i16 7 ret i16 %B 8} 9 10define i8 @test2(i8 %x) { 11 %A = zext i8 %x to i16 12 %B = add i16 %A, 1025 13 %C = trunc i16 %B to i8 14; CHECK: (1 + %x) 15 ret i8 %C 16} 17 18define i8 @test3(i8 %x) { 19 %A = zext i8 %x to i16 20 %B = mul i16 %A, 1027 21 %C = trunc i16 %B to i8 22; CHECK: (3 * %x) 23 ret i8 %C 24} 25 26define void @test4(i32 %x, i32 %y) { 27entry: 28 %Y = and i32 %y, 3 29 br label %loop 30loop: 31 %A = phi i32 [0, %entry], [%I, %loop] 32 %rand1 = icmp sgt i32 %A, %Y 33 %Z1 = select i1 %rand1, i32 %A, i32 %Y 34 %rand2 = icmp ugt i32 %A, %Z1 35 %Z2 = select i1 %rand2, i32 %A, i32 %Z1 36; CHECK: %Z2 = 37; CHECK-NEXT: --> ([[EXPR:.*]]){{ U: [^ ]+ S: [^ ]+}}{{ +}}Exits: 20 38 %B = trunc i32 %Z2 to i16 39 %C = sext i16 %B to i30 40; CHECK: %C = 41; CHECK-NEXT: (trunc i32 ([[EXPR]]) to i30) 42 %D = sext i16 %B to i32 43; CHECK: %D = 44; CHECK-NEXT: ([[EXPR]]) 45 %E = sext i16 %B to i34 46; CHECK: %E = 47; CHECK-NEXT: (zext i32 ([[EXPR]]) to i34) 48 %F = zext i16 %B to i30 49; CHECK: %F = 50; CHECK-NEXT: (trunc i32 ([[EXPR]]) to i30 51 %G = zext i16 %B to i32 52; CHECK: %G = 53; CHECK-NEXT: ([[EXPR]]) 54 %H = zext i16 %B to i34 55; CHECK: %H = 56; CHECK-NEXT: (zext i32 ([[EXPR]]) to i34) 57 %I = add i32 %A, 1 58 %0 = icmp ne i32 %A, 20 59 br i1 %0, label %loop, label %exit 60exit: 61 ret void 62} 63 64define void @test5(i32 %i) { 65; CHECK-LABEL: @test5 66 %A = and i32 %i, 1 67; CHECK: --> (zext i1 (trunc i32 %i to i1) to i32) 68 %B = and i32 %i, 2 69; CHECK: --> (2 * (zext i1 (trunc i32 (%i /u 2) to i1) to i32)) 70 %C = and i32 %i, 63 71; CHECK: --> (zext i6 (trunc i32 %i to i6) to i32) 72 %D = and i32 %i, 126 73; CHECK: --> (2 * (zext i6 (trunc i32 (%i /u 2) to i6) to i32)) 74 %E = and i32 %i, 64 75; CHECK: --> (64 * (zext i1 (trunc i32 (%i /u 64) to i1) to i32)) 76 %F = and i32 %i, -2147483648 77; CHECK: --> (-2147483648 * (%i /u -2147483648)) 78 ret void 79} 80 81define void @test6(i8 %x) { 82; CHECK-LABEL: @test6 83 %A = zext i8 %x to i16 84 %B = shl nuw i16 %A, 8 85 %C = and i16 %B, -2048 86; CHECK: --> (2048 * ((zext i8 %x to i16) /u 8)) 87 ret void 88} 89 90; PR22960 91define void @test7(i32 %A) { 92; CHECK-LABEL: @test7 93 %B = sext i32 %A to i64 94 %C = zext i32 %A to i64 95 %D = sub i64 %B, %C 96 %E = trunc i64 %D to i16 97; CHECK: %E 98; CHECK-NEXT: --> 0 99 ret void 100} 101 102define i64 @test8(i64 %a) { 103; CHECK-LABEL: @test8 104 %t0 = udiv i64 %a, 56 105 %t1 = udiv i64 %t0, 56 106; CHECK: %t1 107; CHECK-NEXT: --> (%a /u 3136) 108 ret i64 %t1 109} 110 111define i64 @test9(i64 %a) { 112; CHECK-LABEL: @test9 113 %t0 = udiv i64 %a, 100000000000000 114 %t1 = udiv i64 %t0, 100000000000000 115; CHECK: %t1 116; CHECK-NEXT: --> 0 117 ret i64 %t1 118} 119 120define i64 @test10(i64 %a, i64 %b) { 121; CHECK-LABEL: @test10 122 %t0 = udiv i64 %a, 100000000000000 123 %t1 = udiv i64 %t0, 100000000000000 124 %t2 = mul i64 %b, %t1 125; CHECK: %t2 126; CHECK-NEXT: --> 0 127 ret i64 %t2 128} 129