1 ; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
3 ; The addrecs in this loop are analyzable only by using nsw information.
5 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64"
7 ; CHECK: Classifying expressions for: @test1
8 define void @test1(double* %p) nounwind {
10 %tmp = load double* %p, align 8 ; <double> [#uses=1]
11 %tmp1 = fcmp ogt double %tmp, 2.000000e+00 ; <i1> [#uses=1]
12 br i1 %tmp1, label %bb.nph, label %return
14 bb.nph: ; preds = %entry
17 bb: ; preds = %bb1, %bb.nph
18 %i.01 = phi i32 [ %tmp8, %bb1 ], [ 0, %bb.nph ] ; <i32> [#uses=3]
20 ; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%bb>
21 %tmp2 = sext i32 %i.01 to i64 ; <i64> [#uses=1]
22 %tmp3 = getelementptr double* %p, i64 %tmp2 ; <double*> [#uses=1]
23 %tmp4 = load double* %tmp3, align 8 ; <double> [#uses=1]
24 %tmp5 = fmul double %tmp4, 9.200000e+00 ; <double> [#uses=1]
25 %tmp6 = sext i32 %i.01 to i64 ; <i64> [#uses=1]
26 %tmp7 = getelementptr double* %p, i64 %tmp6 ; <double*> [#uses=1]
28 ; CHECK-NEXT: --> {%p,+,8}<%bb>
29 store double %tmp5, double* %tmp7, align 8
30 %tmp8 = add nsw i32 %i.01, 1 ; <i32> [#uses=2]
32 ; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%bb>
36 %phitmp = sext i32 %tmp8 to i64 ; <i64> [#uses=1]
38 ; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%bb>
39 %tmp9 = getelementptr double* %p, i64 %phitmp ; <double*> [#uses=1]
41 ; CHECK-NEXT: --> {(8 + %p),+,8}<%bb>
42 %tmp10 = load double* %tmp9, align 8 ; <double> [#uses=1]
43 %tmp11 = fcmp ogt double %tmp10, 2.000000e+00 ; <i1> [#uses=1]
44 br i1 %tmp11, label %bb, label %bb1.return_crit_edge
46 bb1.return_crit_edge: ; preds = %bb1
49 return: ; preds = %bb1.return_crit_edge, %entry
53 ; CHECK: Classifying expressions for: @test2
54 define void @test2(i32* %begin, i32* %end) ssp {
56 %cmp1.i.i = icmp eq i32* %begin, %end
57 br i1 %cmp1.i.i, label %_ZSt4fillIPiiEvT_S1_RKT0_.exit, label %for.body.lr.ph.i.i
59 for.body.lr.ph.i.i: ; preds = %entry
60 br label %for.body.i.i
62 for.body.i.i: ; preds = %for.body.i.i, %for.body.lr.ph.i.i
63 %__first.addr.02.i.i = phi i32* [ %begin, %for.body.lr.ph.i.i ], [ %ptrincdec.i.i, %for.body.i.i ]
64 ; CHECK: %__first.addr.02.i.i
65 ; CHECK-NEXT: --> {%begin,+,4}<nw><%for.body.i.i>
66 store i32 0, i32* %__first.addr.02.i.i, align 4
67 %ptrincdec.i.i = getelementptr inbounds i32* %__first.addr.02.i.i, i64 1
68 ; CHECK: %ptrincdec.i.i
69 ; CHECK-NEXT: --> {(4 + %begin),+,4}<nw><%for.body.i.i>
70 %cmp.i.i = icmp eq i32* %ptrincdec.i.i, %end
71 br i1 %cmp.i.i, label %for.cond.for.end_crit_edge.i.i, label %for.body.i.i
73 for.cond.for.end_crit_edge.i.i: ; preds = %for.body.i.i
74 br label %_ZSt4fillIPiiEvT_S1_RKT0_.exit
76 _ZSt4fillIPiiEvT_S1_RKT0_.exit: ; preds = %entry, %for.cond.for.end_crit_edge.i.i
80 ; Various checks for inbounds geps.
81 define void @test3(i32* %begin, i32* %end) nounwind ssp {
83 %cmp7.i.i = icmp eq i32* %begin, %end
84 br i1 %cmp7.i.i, label %_ZSt4fillIPiiEvT_S1_RKT0_.exit, label %for.body.i.i
86 for.body.i.i: ; preds = %entry, %for.body.i.i
87 %indvar.i.i = phi i64 [ %tmp, %for.body.i.i ], [ 0, %entry ]
89 ; CHECK: {0,+,1}<nuw><nsw><%for.body.i.i>
90 %tmp = add nsw i64 %indvar.i.i, 1
92 ; CHECK: {1,+,1}<nuw><nsw><%for.body.i.i>
93 %ptrincdec.i.i = getelementptr inbounds i32* %begin, i64 %tmp
94 ; CHECK: %ptrincdec.i.i =
95 ; CHECK: {(4 + %begin),+,4}<nsw><%for.body.i.i>
96 %__first.addr.08.i.i = getelementptr inbounds i32* %begin, i64 %indvar.i.i
97 ; CHECK: %__first.addr.08.i.i
98 ; CHECK: {%begin,+,4}<nsw><%for.body.i.i>
99 store i32 0, i32* %__first.addr.08.i.i, align 4
100 %cmp.i.i = icmp eq i32* %ptrincdec.i.i, %end
101 br i1 %cmp.i.i, label %_ZSt4fillIPiiEvT_S1_RKT0_.exit, label %for.body.i.i
102 ; CHECK: Loop %for.body.i.i: backedge-taken count is ((-4 + (-1 * %begin) + %end) /u 4)
103 ; CHECK: Loop %for.body.i.i: max backedge-taken count is ((-4 + (-1 * %begin) + %end) /u 4)
104 _ZSt4fillIPiiEvT_S1_RKT0_.exit: ; preds = %for.body.i.i, %entry