1 ; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s 2 3 declare void @llvm.experimental.guard(i1, ...) 4 declare void @llvm.assume(i1) 5 6 define void @s_0(i32 %n, i1* %cond) { 7 ; CHECK-LABEL: Classifying expressions for: @s_0 8 entry: 9 br label %loop 10 11 loop: 12 %iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ] 13 %iv.inc = add i32 %iv, 1 14 %iv.sext = sext i32 %iv to i64 15 ; CHECK: %iv.sext = sext i32 %iv to i64 16 ; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%loop> 17 %cmp = icmp slt i32 %iv, %n 18 call void(i1, ...) @llvm.experimental.guard(i1 %cmp) [ "deopt"() ] 19 %c = load volatile i1, i1* %cond 20 br i1 %c, label %loop, label %leave 21 22 leave: 23 ret void 24 } 25 26 define void @s_1(i1* %cond) { 27 ; CHECK-LABEL: Classifying expressions for: @s_1 28 entry: 29 br label %loop 30 31 loop: 32 %iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ] 33 %iv.inc = add i32 %iv, 3 34 %iv.sext = sext i32 %iv to i64 35 ; CHECK: %iv.sext = sext i32 %iv to i64 36 ; CHECK-NEXT: --> {0,+,3}<nuw><nsw><%loop> 37 %cmp = icmp slt i32 %iv, 10000 38 call void(i1, ...) @llvm.experimental.guard(i1 %cmp) [ "deopt"() ] 39 %c = load volatile i1, i1* %cond 40 br i1 %c, label %loop, label %leave 41 42 leave: 43 ret void 44 } 45 46 define void @s_2(i1* %cond) { 47 ; CHECK-LABEL: Classifying expressions for: @s_2 48 entry: 49 br label %loop 50 51 loop: 52 %iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ] 53 %iv.inc = add i32 %iv, 3 54 %iv.sext = sext i32 %iv to i64 55 %cmp = icmp slt i32 %iv, 10000 56 ; CHECK: %iv.sext = sext i32 %iv to i64 57 ; CHECK-NEXT: --> {0,+,3}<nuw><nsw><%loop> 58 call void @llvm.assume(i1 %cmp) 59 %c = load volatile i1, i1* %cond 60 br i1 %c, label %loop, label %leave 61 62 leave: 63 ret void 64 } 65 66 define void @u_0(i32 %n, i1* %cond) { 67 ; CHECK-LABEL: Classifying expressions for: @u_0 68 entry: 69 br label %loop 70 71 loop: 72 %iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ] 73 %iv.inc = add i32 %iv, 1 74 %iv.zext = zext i32 %iv to i64 75 ; CHECK: %iv.zext = zext i32 %iv to i64 76 ; CHECK-NEXT: --> {0,+,1}<nuw><%loop> 77 %cmp = icmp ult i32 %iv, %n 78 call void(i1, ...) @llvm.experimental.guard(i1 %cmp) [ "deopt"() ] 79 %c = load volatile i1, i1* %cond 80 br i1 %c, label %loop, label %leave 81 82 leave: 83 ret void 84 } 85 86 define void @u_1(i1* %cond) { 87 ; CHECK-LABEL: Classifying expressions for: @u_1 88 entry: 89 br label %loop 90 91 loop: 92 %iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ] 93 %iv.inc = add i32 %iv, 3 94 %iv.zext = zext i32 %iv to i64 95 ; CHECK: %iv.zext = zext i32 %iv to i64 96 ; CHECK-NEXT: --> {0,+,3}<nuw><%loop> 97 %cmp = icmp ult i32 %iv, 10000 98 call void(i1, ...) @llvm.experimental.guard(i1 %cmp) [ "deopt"() ] 99 %c = load volatile i1, i1* %cond 100 br i1 %c, label %loop, label %leave 101 102 leave: 103 ret void 104 } 105 106 define void @u_2(i1* %cond) { 107 ; CHECK-LABEL: Classifying expressions for: @u_2 108 entry: 109 br label %loop 110 111 loop: 112 %iv = phi i32 [ 30000, %entry ], [ %iv.inc, %loop ] 113 %iv.inc = add i32 %iv, -2 114 %iv.zext = zext i32 %iv to i64 115 %cmp = icmp ugt i32 %iv.inc, -10000 116 ; CHECK: %iv.zext = zext i32 %iv to i64 117 ; CHECK-NEXT: --> {30000,+,-2}<nw><%loop> 118 call void @llvm.assume(i1 %cmp) 119 %c = load volatile i1, i1* %cond 120 br i1 %c, label %loop, label %leave 121 122 leave: 123 ret void 124 } 125
