1 ; RUN: opt -objc-arc-contract -S < %s | FileCheck %s 2 3 target datalayout = "e-p:64:64:64" 4 5 declare i8* @objc_retain(i8*) 6 declare void @objc_release(i8*) 7 8 @x = external global i8* 9 10 ; CHECK: define void @test0( 11 ; CHECK: entry: 12 ; CHECK-NEXT: call void @objc_storeStrong(i8** @x, i8* %p) nounwind 13 ; CHECK-NEXT: ret void 14 define void @test0(i8* %p) { 15 entry: 16 %0 = tail call i8* @objc_retain(i8* %p) nounwind 17 %tmp = load i8** @x, align 8 18 store i8* %0, i8** @x, align 8 19 tail call void @objc_release(i8* %tmp) nounwind 20 ret void 21 } 22 23 ; Don't do this if the load is volatile. 24 25 ; CHECK: define void @test1(i8* %p) { 26 ; CHECK-NEXT: entry: 27 ; CHECK-NEXT: %0 = tail call i8* @objc_retain(i8* %p) nounwind 28 ; CHECK-NEXT: %tmp = volatile load i8** @x, align 8 29 ; CHECK-NEXT: store i8* %0, i8** @x, align 8 30 ; CHECK-NEXT: tail call void @objc_release(i8* %tmp) nounwind 31 ; CHECK-NEXT: ret void 32 ; CHECK-NEXT: } 33 define void @test1(i8* %p) { 34 entry: 35 %0 = tail call i8* @objc_retain(i8* %p) nounwind 36 %tmp = volatile load i8** @x, align 8 37 store i8* %0, i8** @x, align 8 38 tail call void @objc_release(i8* %tmp) nounwind 39 ret void 40 } 41 42 ; Don't do this if the store is volatile. 43 44 ; CHECK: define void @test2(i8* %p) { 45 ; CHECK-NEXT: entry: 46 ; CHECK-NEXT: %0 = tail call i8* @objc_retain(i8* %p) nounwind 47 ; CHECK-NEXT: %tmp = load i8** @x, align 8 48 ; CHECK-NEXT: volatile store i8* %0, i8** @x, align 8 49 ; CHECK-NEXT: tail call void @objc_release(i8* %tmp) nounwind 50 ; CHECK-NEXT: ret void 51 ; CHECK-NEXT: } 52 define void @test2(i8* %p) { 53 entry: 54 %0 = tail call i8* @objc_retain(i8* %p) nounwind 55 %tmp = load i8** @x, align 8 56 volatile store i8* %0, i8** @x, align 8 57 tail call void @objc_release(i8* %tmp) nounwind 58 ret void 59 } 60
