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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2;; Ensure the store verifier is not overzealous
3; RUN: opt -newgvn -enable-phi-of-ops=true -S %s | FileCheck %s
4@b = external global i16, align 2
5
6define void @patatino() {
7; CHECK-LABEL: @patatino(
8; CHECK-NEXT:  entry:
9; CHECK-NEXT:    br i1 false, label [[FOR_COND1:%.*]], label [[FOR_INC:%.*]]
10; CHECK:       for.cond1:
11; CHECK-NEXT:    [[PHIOFOPS:%.*]] = phi i16 [ undef, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_INC]] ]
12; CHECK-NEXT:    store i16 [[PHIOFOPS]], i16* @b, align 2
13; CHECK-NEXT:    br label [[FOR_INC]]
14; CHECK:       for.inc:
15; CHECK-NEXT:    [[TMP0:%.*]] = load i16, i16* @b, align 2
16; CHECK-NEXT:    [[INC]] = add i16 [[TMP0]], 1
17; CHECK-NEXT:    store i16 [[INC]], i16* @b, align 2
18; CHECK-NEXT:    br label [[FOR_COND1]]
19;
20entry:
21  br i1 false, label %for.cond1, label %for.inc
22
23for.cond1:
24  %e.0 = phi i16* [ %e.1, %for.inc ], [ null, %entry ]
25  %0 = load i16, i16* %e.0, align 2
26  %add = add i16 %0, 0
27  store i16 %add, i16* %e.0, align 2
28  br label %for.inc
29
30for.inc:
31  %e.1 = phi i16* [ %e.0, %for.cond1 ], [ @b, %entry ]
32  %1 = load i16, i16* @b, align 2
33  %inc = add i16 %1, 1
34  store i16 %inc, i16* @b, align 2
35  br label %for.cond1
36}
37