1; RUN: opt < %s -gvn -enable-pre -S | FileCheck %s 2 3@H = common global i32 0 4@G = common global i32 0 5 6define i32 @test1(i1 %cond, i32 %v) nounwind { 7; CHECK-LABEL: @test1 8entry: 9 br i1 %cond, label %bb, label %bb1 10 11bb: 12 %add.1 = add nuw nsw i32 %v, 42 13; CHECK: %add.1 = add i32 %v, 42 14 store i32 %add.1, i32* @G, align 4 15 br label %return 16 17bb1: 18; CHECK: %.pre = add i32 %v, 42 19 br label %return 20 21return: 22; CHECK: %add.2.pre-phi = phi i32 [ %.pre, %bb1 ], [ %add.1, %bb ] 23; CHECK-NEXT: store i32 %add.2.pre-phi, i32* @H, align 4 24; CHECK-NEXT: ret i32 0 25 %add.2 = add i32 %v, 42 26 store i32 %add.2, i32* @H, align 4 27 ret i32 0 28} 29 30define i32 @test2(i1 %cond, i32 %v) nounwind { 31; CHECK-LABEL: @test2 32entry: 33 br i1 %cond, label %bb, label %bb1 34 35bb: 36 %add.1 = add i32 %v, 42 37; CHECK: %add.1 = add i32 %v, 42 38 store i32 %add.1, i32* @G, align 4 39 br label %return 40 41bb1: 42; CHECK: %.pre = add nuw nsw i32 %v, 42 43 br label %return 44 45return: 46; CHECK: %add.2.pre-phi = phi i32 [ %.pre, %bb1 ], [ %add.1, %bb ] 47; CHECK-NEXT: store i32 %add.2.pre-phi, i32* @H, align 4 48; CHECK-NEXT: ret i32 0 49 %add.2 = add nuw nsw i32 %v, 42 50 store i32 %add.2, i32* @H, align 4 51 ret i32 0 52} 53