xref: /llvm-project/polly/test/CodeGen/phi_in_exit_early_lnt_failure_2.ll (revision e1f056f692d869708c1898d9d65a69ac5584a0ed)
1; RUN: opt %loadNPMPolly -passes=polly-codegen -S < %s | FileCheck %s
2;
3; This caused an lnt crash at some point, just verify it will run through and
4; produce the PHI node in the exit we are looking for.
5;
6; CHECK:       %eps1.addr.0.s2a = alloca double
7; CHECK-NOT:   %eps1.addr.0.ph.s2a = alloca double
8;
9; CHECK-LABEL: polly.merge_new_and_old:
10; CHECK:          %eps1.addr.0.ph.merge = phi double [ %eps1.addr.0.ph.final_reload, %polly.exiting ], [ %eps1.addr.0.ph, %if.end.47.region_exiting ]
11;
12; CHECK-LABEL: polly.start:
13; CHECK-NEXT:    store double %eps1, ptr %eps1.s2a
14;
15; CHECK-LABEL: polly.exiting:
16; CHECK-NEXT:     %eps1.addr.0.ph.final_reload = load double, ptr %eps1.addr.0.s2a
17;
18define void @dbisect(ptr %c, ptr %b, double %eps1, ptr %eps2) {
19entry:
20  br label %entry.split
21
22entry.split:                                      ; preds = %entry
23  store double 0.000000e+00, ptr %b, align 8
24  br i1 false, label %for.inc, label %for.end
25
26if.end:                                           ; preds = %if.then, %for.body
27  %0 = load double, ptr %c, align 8
28  br label %for.inc
29
30for.inc:                                          ; preds = %if.then.36, %if.end
31  br i1 false, label %if.end, label %for.cond.for.end_crit_edge
32
33for.cond.for.end_crit_edge:                       ; preds = %for.inc
34  br label %for.end
35
36for.end:                                          ; preds = %for.cond.for.end_crit_edge, %entry.split
37  %cmp45 = fcmp ugt double %eps1, 0.000000e+00
38  br i1 %cmp45, label %if.end.47, label %if.then.46
39
40if.then.46:                                       ; preds = %for.end
41  %1 = load double, ptr %eps2, align 8
42  br label %if.end.47
43
44if.end.47:                                        ; preds = %if.then.46, %for.end
45  %eps1.addr.0 = phi double [ %1, %if.then.46 ], [ %eps1, %for.end ]
46  ret void
47}
48