1 ; RUN: opt -analyze -scalar-evolution -S < %s | FileCheck %s 2 3 define 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 10 define 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 18 define 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 26 define void @test4(i32 %x, i32 %y) { 27 entry: 28 %Y = and i32 %y, 3 29 br label %loop 30 loop: 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:.*]]){{ +}}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 60 exit: 61 ret void 62 } 63 64 define 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 81 define 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
