1 ; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
2 ; RUN: opt -analyze -scalar-evolution %s -enable-new-pm=0 | FileCheck %s
3 ; RUN: opt -passes='print<scalar-evolution>' -disable-output %s 2>&1 | FileCheck %s
7 define void @test_trip_multiple_4(i32 %num) {
8 ; CHECK-LABEL: @test_trip_multiple_4
9 ; CHECK: Loop %for.body: backedge-taken count is (-1 + %num)
10 ; CHECK-NEXT: Loop %for.body: max backedge-taken count is -2
11 ; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
12 ; CHECK: Loop %for.body: Trip multiple is 4
16 %cmp = icmp eq i32 %u, 0
17 tail call void @llvm.assume(i1 %cmp)
18 %cmp.1 = icmp uge i32 %num, 4
19 tail call void @llvm.assume(i1 %cmp.1)
23 %i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
24 %inc = add nuw nsw i32 %i.010, 1
25 %cmp2 = icmp ult i32 %inc, %num
26 br i1 %cmp2, label %for.body, label %exit
32 define void @test_trip_multiple_5(i32 %num) {
33 ; CHECK-LABEL: @test_trip_multiple_5
34 ; CHECK: Loop %for.body: backedge-taken count is (-1 + %num)
35 ; CHECK-NEXT: Loop %for.body: max backedge-taken count is -2
36 ; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
37 ; CHECK: Loop %for.body: Trip multiple is 1
41 %cmp = icmp eq i32 %u, 0
42 tail call void @llvm.assume(i1 %cmp)
43 %cmp.1 = icmp uge i32 %num, 5
44 tail call void @llvm.assume(i1 %cmp.1)
48 %i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
49 %inc = add nuw nsw i32 %i.010, 1
50 %cmp2 = icmp ult i32 %inc, %num
51 br i1 %cmp2, label %for.body, label %exit
57 define void @test_trunc_operand_larger_than_urem_expr(i64 %N) {
58 ; CHECK-LABEL: @test_trunc_operand_larger_than_urem_expr
59 ; CHECK: Loop %for.body: backedge-taken count is (-1 + %N)
60 ; CHECK-NEXT: Loop %for.body: max backedge-taken count is -1
61 ; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %N)
64 %conv = trunc i64 %N to i32
65 %and = and i32 %conv, 1
66 %cmp.pre = icmp eq i32 %and, 0
67 br i1 %cmp.pre, label %for.body, label %exit
70 %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
71 %iv.next = add nuw nsw i64 %iv, 1
72 %cmp.1 = icmp ne i64 %iv.next, %N
73 br i1 %cmp.1, label %for.body, label %exit
79 declare void @llvm.assume(i1)