1 ; RUN: llc < %s -march=x86-64 | FileCheck %s
3 %struct.obj = type { i64 }
5 ; CHECK: _Z7releaseP3obj
6 define void @_Z7releaseP3obj(%struct.obj* nocapture %o) nounwind uwtable ssp {
8 ; CHECK: decq (%{{rdi|rcx}})
10 %refcnt = getelementptr inbounds %struct.obj* %o, i64 0, i32 0
11 %0 = load i64* %refcnt, align 8, !tbaa !0
13 store i64 %dec, i64* %refcnt, align 8, !tbaa !0
14 %tobool = icmp eq i64 %dec, 0
15 br i1 %tobool, label %if.end, label %return
17 if.end: ; preds = %entry
18 %1 = bitcast %struct.obj* %o to i8*
19 tail call void @free(i8* %1)
22 return: ; preds = %entry, %if.end
26 @c = common global i64 0, align 8
27 @a = common global i32 0, align 4
28 @.str = private unnamed_addr constant [5 x i8] c"%ld\0A\00", align 1
29 @b = common global i32 0, align 4
32 define i32 @test() nounwind uwtable ssp {
36 %0 = load i64* @c, align 8, !tbaa !0
37 %dec.i = add nsw i64 %0, -1
38 store i64 %dec.i, i64* @c, align 8, !tbaa !0
39 %tobool.i = icmp ne i64 %dec.i, 0
40 %lor.ext.i = zext i1 %tobool.i to i32
41 store i32 %lor.ext.i, i32* @a, align 4, !tbaa !3
42 %call = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([5 x i8]* @.str, i64 0, i64 0), i64 %dec.i) nounwind
47 define i32 @test2() nounwind uwtable ssp {
49 ; CHECK-NOT: decq ({{.*}})
50 %0 = load i64* @c, align 8, !tbaa !0
51 %dec.i = add nsw i64 %0, -1
52 store i64 %dec.i, i64* @c, align 8, !tbaa !0
53 %tobool.i = icmp ne i64 %0, 0
54 %lor.ext.i = zext i1 %tobool.i to i32
55 store i32 %lor.ext.i, i32* @a, align 4, !tbaa !3
56 %call = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([5 x i8]* @.str, i64 0, i64 0), i64 %dec.i) nounwind
60 declare i32 @printf(i8* nocapture, ...) nounwind
62 declare void @free(i8* nocapture) nounwind
64 !0 = metadata !{metadata !"long", metadata !1}
65 !1 = metadata !{metadata !"omnipotent char", metadata !2}
66 !2 = metadata !{metadata !"Simple C/C++ TBAA", null}
67 !3 = metadata !{metadata !"int", metadata !1}