1; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels=true  -S | FileCheck %s
2; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s
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_shadow_width_bits = weak_odr constant i32 [[#SBITS:]]
8; CHECK: @__dfsan_shadow_width_bytes = weak_odr constant i32 [[#SBYTES:]]
9
10define i32 @phiop(i32 %a, i32 %b, i1 %c) {
11  ; CHECK: @"dfs$phiop"
12  ; CHECK: entry:
13  ; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
14  ; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
15  ; CHECK: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align [[ALIGN:2]]
16  ; CHECK: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
17  ; CHECK: br i1 %c, label %next, label %done
18  ; CHECK: next:
19  ; CHECK: br i1 %c, label %T, label %F
20  ; CHECK: T:
21  ; CHECK: [[BS_NE:%.*]] = icmp ne i[[#SBITS]] [[BS]], 0
22  ; CHECK: [[BAO_T:%.*]] = select i1 [[BS_NE]], i32 [[BO]], i32 [[AO]]
23  ; CHECK: br label %done
24  ; CHECK: F:
25  ; CHECK: [[AS_NE:%.*]] = icmp ne i[[#SBITS]] [[AS]], 0
26  ; CHECK: [[BAO_F:%.*]] = select i1 [[AS_NE]], i32 [[AO]], i32 [[BO]]
27  ; CHECK: br label %done
28  ; CHECK: done:
29  ; CHECK: [[PO:%.*]] = phi i32 [ [[BAO_T]], %T ], [ [[BAO_F]], %F ], [ [[AO]], %entry ]
30  ; CHECK: store i32 [[PO]], i32* @__dfsan_retval_origin_tls, align 4
31
32entry:
33  br i1 %c, label %next, label %done
34next:
35  br i1 %c, label %T, label %F
36T:
37  %sum = add i32 %a, %b
38  br label %done
39F:
40  %diff = sub i32 %b, %a
41  br label %done
42done:
43  %r = phi i32 [%sum, %T], [%diff, %F], [%a, %entry]
44  ret i32 %r
45}