1 ; RUN: opt < %s -globalopt -S | FileCheck %s 2 3 @G = internal global i32 17 ; <i32*> [#uses=3] 4 ; CHECK-NOT: @G 5 6 define void @foo() { 7 %V = load i32* @G ; <i32> [#uses=1] 8 store i32 %V, i32* @G 9 ret void 10 ; CHECK: @foo 11 ; CHECK-NEXT: ret void 12 } 13 14 define i32 @bar() { 15 %X = load i32* @G ; <i32> [#uses=1] 16 ret i32 %X 17 ; CHECK: @bar 18 ; CHECK-NEXT: ret i32 17 19 } 20 21 @a = internal global i64* null, align 8 22 ; CHECK-NOT: @a 23 24 ; PR13968 25 define void @qux() nounwind { 26 %b = bitcast i64** @a to i8* 27 %g = getelementptr i64** @a, i32 1 28 %cmp = icmp ne i8* null, %b 29 %cmp2 = icmp eq i8* null, %b 30 %cmp3 = icmp eq i64** null, %g 31 store i64* inttoptr (i64 1 to i64*), i64** @a, align 8 32 %l = load i64** @a, align 8 33 ret void 34 ; CHECK: @qux 35 ; CHECK-NOT: store 36 ; CHECK-NOT: load 37 } 38 39
