1 ; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 4
2 ; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-classify-expressions=0 2>&1 | FileCheck %s
5 define zeroext i16 @test(ptr nocapture %p, i32 %len) nounwind readonly {
8 ; CHECK-NEXT: Determining loop execution counts for: @test
9 ; CHECK-NEXT: Loop %for.body: backedge-taken count is ((-2 + %len) /u 2)
10 ; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is i32 1073741823
11 ; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is ((-2 + %len) /u 2)
12 ; CHECK-NEXT: Loop %for.body: Trip multiple is 1
15 %cmp2 = icmp sgt i32 %len, 1
16 br i1 %cmp2, label %for.body.preheader, label %for.end
18 for.body.preheader: ; preds = %entry
21 for.body: ; preds = %for.body, %for.body.preheader
22 %p.addr.05 = phi ptr [ %incdec.ptr, %for.body ], [ %p, %for.body.preheader ]
23 %len.addr.04 = phi i32 [ %sub, %for.body ], [ %len, %for.body.preheader ]
24 %res.03 = phi i32 [ %add, %for.body ], [ 0, %for.body.preheader ]
25 %incdec.ptr = getelementptr inbounds i16, ptr %p.addr.05, i32 1
26 %0 = load i16, ptr %p.addr.05, align 2
27 %conv = zext i16 %0 to i32
28 %add = add i32 %conv, %res.03
29 %sub = add nsw i32 %len.addr.04, -2
30 %cmp = icmp sgt i32 %sub, 1
31 br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge
33 for.cond.for.end_crit_edge: ; preds = %for.body
34 %extract.t = trunc i32 %add to i16
37 for.end: ; preds = %for.cond.for.end_crit_edge, %entry
38 %res.0.lcssa.off0 = phi i16 [ %extract.t, %for.cond.for.end_crit_edge ], [ 0, %entry ]
39 ret i16 %res.0.lcssa.off0