@x = common global i8* null, align 8
declare i8* @objc_retain(i8*)
+declare i32 @objc_sync_enter(i8*)
+declare i32 @objc_sync_exit(i8*)
; GVN should be able to eliminate this redundant load, with ARC-specific
; alias analysis.
-; CHECK: define i8* @foo(i32 %n)
+; CHECK: define i8* @test0(i32 %n)
; CHECK-NEXT: entry:
; CHECK-NEXT: %s = load i8** @x
; CHECK-NOT: load
; CHECK: ret i8* %s
; CHECK-NEXT: }
-define i8* @foo(i32 %n) nounwind {
+define i8* @test0(i32 %n) nounwind {
entry:
%s = load i8** @x
%0 = tail call i8* @objc_retain(i8* %s) nounwind
%t = load i8** @x
- ret i8* %s
+ ret i8* %t
+}
+
+; GVN should not be able to eliminate this redundant load, with ARC-specific
+; alias analysis.
+
+; CHECK-LABEL: define i8* @test1(
+; CHECK: load
+; CHECK: load
+; CHECK: ret i8* %t
+; CHECK: }
+define i8* @test1(i32 %n) nounwind {
+entry:
+ %s = load i8** @x
+ %0 = call i32 @objc_sync_enter(i8* %s)
+ %t = load i8** @x
+ %1 = call i32 @objc_sync_exit(i8* %s)
+ ret i8* %t
}