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