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1; NOTE: Assertions have been autogenerated by update_test_checks.py
2; RUN: opt < %s -instcombine -S | FileCheck %s
3
4@x = weak global i32 0
5
6define void @self_assign_1() {
7; CHECK-LABEL: @self_assign_1(
8; CHECK-NEXT:  entry:
9; CHECK-NEXT:    [[TMP:%.*]] = load volatile i32, i32* @x, align 4
10; CHECK-NEXT:    store volatile i32 [[TMP]], i32* @x, align 4
11; CHECK-NEXT:    br label %return
12; CHECK:       return:
13; CHECK-NEXT:    ret void
14;
15entry:
16  %tmp = load volatile i32, i32* @x
17  store volatile i32 %tmp, i32* @x
18  br label %return
19
20return:
21  ret void
22}
23