1; RUN: opt < %s -dfsan -dfsan-track-select-control-flow=true -S | FileCheck %s --check-prefixes=CHECK,TRACK_CF
2; RUN: opt < %s -dfsan -dfsan-track-select-control-flow=false -S | FileCheck %s --check-prefixes=CHECK,NO_TRACK_CF
3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
4target triple = "x86_64-unknown-linux-gnu"
5
6; CHECK: @__dfsan_arg_tls = external thread_local(initialexec) global [[TLS_ARR:\[100 x i64\]]]
7; CHECK: @__dfsan_retval_tls = external thread_local(initialexec) global [[TLS_ARR]]
8; CHECK: @__dfsan_shadow_width_bits = weak_odr constant i32 [[#SBITS:]]
9; CHECK: @__dfsan_shadow_width_bytes = weak_odr constant i32 [[#SBYTES:]]
10
11define i8 @select8(i1 %c, i8 %t, i8 %f) {
12  ; TRACK_CF: @select8.dfsan
13  ; TRACK_CF: %[[#R:]] = load i[[#SBITS]], ptr inttoptr (i64 add (i64 ptrtoint (ptr @__dfsan_arg_tls to i64), i64 4) to ptr), align [[ALIGN:2]]
14  ; TRACK_CF: %[[#R+1]] = load i[[#SBITS]], ptr inttoptr (i64 add (i64 ptrtoint (ptr @__dfsan_arg_tls to i64), i64 2) to ptr), align [[ALIGN]]
15  ; TRACK_CF: %[[#R+2]] = load i[[#SBITS]], ptr @__dfsan_arg_tls, align [[ALIGN]]
16  ; TRACK_CF: %[[#R+3]] = select i1 %c, i[[#SBITS]] %[[#R+1]], i[[#SBITS]] %[[#R]]
17  ; TRACK_CF: %[[#RO:]] = or i[[#SBITS]] %[[#R+2]], %[[#R+3]]
18  ; TRACK_CF: %a = select i1 %c, i8 %t, i8 %f
19  ; TRACK_CF: store i[[#SBITS]] %[[#RO]], ptr @__dfsan_retval_tls, align [[ALIGN]]
20  ; TRACK_CF: ret i8 %a
21
22  ; NO_TRACK_CF: @select8.dfsan
23  ; NO_TRACK_CF: %[[#R:]] = load i[[#SBITS]], ptr inttoptr (i64 add (i64 ptrtoint (ptr @__dfsan_arg_tls to i64), i64 4) to ptr), align [[ALIGN:2]]
24  ; NO_TRACK_CF: %[[#R+1]] = load i[[#SBITS]], ptr inttoptr (i64 add (i64 ptrtoint (ptr @__dfsan_arg_tls to i64), i64 2) to ptr), align [[ALIGN]]
25  ; NO_TRACK_CF: %[[#R+2]] = load i[[#SBITS]], ptr @__dfsan_arg_tls, align [[ALIGN]]
26  ; NO_TRACK_CF: %[[#R+3]] = select i1 %c, i[[#SBITS]] %[[#R+1]], i[[#SBITS]] %[[#R]]
27  ; NO_TRACK_CF: %a = select i1 %c, i8 %t, i8 %f
28  ; NO_TRACK_CF: store i[[#SBITS]] %[[#R+3]], ptr @__dfsan_retval_tls, align [[ALIGN]]
29  ; NO_TRACK_CF: ret i8 %a
30
31  %a = select i1 %c, i8 %t, i8 %f
32  ret i8 %a
33}
34
35define i8 @select8e(i1 %c, i8 %tf) {
36  ; TRACK_CF: @select8e.dfsan
37  ; TRACK_CF: %[[#R:]] = load i[[#SBITS]], ptr inttoptr (i64 add (i64 ptrtoint (ptr @__dfsan_arg_tls to i64), i64 2) to ptr), align [[ALIGN]]
38  ; TRACK_CF: %[[#R+1]] = load i[[#SBITS]], ptr @__dfsan_arg_tls, align [[ALIGN]]
39  ; TRACK_CF: %[[#RO:]] = or i[[#SBITS]] %[[#R+1]], %[[#R]]
40  ; TRACK_CF: %a = select i1 %c, i8 %tf, i8 %tf
41  ; TRACK_CF: store i[[#SBITS]] %[[#RO]], ptr @__dfsan_retval_tls, align [[ALIGN]]
42  ; TRACK_CF: ret i8 %a
43
44  ; NO_TRACK_CF: @select8e.dfsan
45  ; NO_TRACK_CF: %[[#R:]] = load i[[#SBITS]], ptr inttoptr (i64 add (i64 ptrtoint (ptr @__dfsan_arg_tls to i64), i64 2) to ptr), align [[ALIGN]]
46  ; NO_TRACK_CF: %[[#R+1]] = load i[[#SBITS]], ptr @__dfsan_arg_tls, align [[ALIGN]]
47  ; NO_TRACK_CF: %a = select i1 %c, i8 %tf, i8 %tf
48  ; NO_TRACK_CF: store i[[#SBITS]] %[[#R]], ptr @__dfsan_retval_tls, align [[ALIGN]]
49  ; NO_TRACK_CF: ret i8 %a
50
51  %a = select i1 %c, i8 %tf, i8 %tf
52  ret i8 %a
53}
54
55define <4 x i8> @select8v(<4 x i1> %c, <4 x i8> %t, <4 x i8> %f) {
56  ; TRACK_CF: @select8v.dfsan
57  ; TRACK_CF: %[[#R:]] = load i[[#SBITS]], ptr inttoptr (i64 add (i64 ptrtoint (ptr @__dfsan_arg_tls to i64), i64 4) to ptr), align [[ALIGN:2]]
58  ; TRACK_CF: %[[#R+1]] = load i[[#SBITS]], ptr inttoptr (i64 add (i64 ptrtoint (ptr @__dfsan_arg_tls to i64), i64 2) to ptr), align [[ALIGN]]
59  ; TRACK_CF: %[[#R+2]] = load i[[#SBITS]], ptr @__dfsan_arg_tls, align [[ALIGN]]
60  ; TRACK_CF: %[[#R+3]] = or i[[#SBITS]] %[[#R+1]], %[[#R]]
61  ; TRACK_CF: %[[#RO:]] = or i[[#SBITS]] %[[#R+2]], %[[#R+3]]
62  ; TRACK_CF: %a = select <4 x i1> %c, <4 x i8> %t, <4 x i8> %f
63  ; TRACK_CF: store i[[#SBITS]] %[[#RO]], ptr @__dfsan_retval_tls, align [[ALIGN]]
64  ; TRACK_CF: ret <4 x i8> %a
65
66  ; NO_TRACK_CF: @select8v.dfsan
67  ; NO_TRACK_CF: %[[#R:]] = load i[[#SBITS]], ptr inttoptr (i64 add (i64 ptrtoint (ptr @__dfsan_arg_tls to i64), i64 4) to ptr), align [[ALIGN:2]]
68  ; NO_TRACK_CF: %[[#R+1]] = load i[[#SBITS]], ptr inttoptr (i64 add (i64 ptrtoint (ptr @__dfsan_arg_tls to i64), i64 2) to ptr), align [[ALIGN]]
69  ; NO_TRACK_CF: %[[#R+2]] = load i[[#SBITS]], ptr @__dfsan_arg_tls, align [[ALIGN]]
70  ; NO_TRACK_CF: %[[#RO:]] = or i[[#SBITS]] %[[#R+1]], %[[#R]]
71  ; NO_TRACK_CF: %a = select <4 x i1> %c, <4 x i8> %t, <4 x i8> %f
72  ; NO_TRACK_CF: store i[[#SBITS]] %[[#RO]], ptr @__dfsan_retval_tls, align [[ALIGN]]
73  ; NO_TRACK_CF: ret <4 x i8> %a
74
75  %a = select <4 x i1> %c, <4 x i8> %t, <4 x i8> %f
76  ret <4 x i8> %a
77}
78