1; RUN: opt -S -basicaa -objc-arc -gvn < %s | FileCheck %s 2 3@x = common global i8* null, align 8 4 5declare i8* @objc_retain(i8*) 6 7; GVN should be able to eliminate this redundant load, with ARC-specific 8; alias analysis. 9 10; CHECK: @foo 11; CHECK-NEXT: entry: 12; CHECK-NEXT: %s = load i8** @x 13; CHECK-NOT: load 14; CHECK: ret i8* %s 15define i8* @foo(i32 %n) nounwind { 16entry: 17 %s = load i8** @x 18 %0 = tail call i8* @objc_retain(i8* %s) nounwind 19 %t = load i8** @x 20 ret i8* %s 21} 22