1; RUN: opt < %s -dfsan -dfsan-track-origins=1 -S | FileCheck %s 2target 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" 3target triple = "x86_64-unknown-linux-gnu" 4 5; CHECK: @__dfsan_arg_tls = external thread_local(initialexec) global [[TLS_ARR:\[100 x i64\]]] 6; CHECK: @__dfsan_shadow_width_bits = weak_odr constant i32 [[#SBITS:]] 7; CHECK: @__dfsan_shadow_width_bytes = weak_odr constant i32 [[#SBYTES:]] 8 9define i32 @phiop(i32 %a, i32 %b, i1 %c) { 10 ; CHECK: @phiop.dfsan 11 ; CHECK: entry: 12 ; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4 13 ; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4 14 ; 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]] 15 ; CHECK: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]] 16 ; CHECK: br i1 %c, label %next, label %done 17 ; CHECK: next: 18 ; CHECK: br i1 %c, label %T, label %F 19 ; CHECK: T: 20 ; CHECK: [[BS_NE:%.*]] = icmp ne i[[#SBITS]] [[BS]], 0 21 ; CHECK: [[BAO_T:%.*]] = select i1 [[BS_NE]], i32 [[BO]], i32 [[AO]] 22 ; CHECK: br label %done 23 ; CHECK: F: 24 ; CHECK: [[AS_NE:%.*]] = icmp ne i[[#SBITS]] [[AS]], 0 25 ; CHECK: [[BAO_F:%.*]] = select i1 [[AS_NE]], i32 [[AO]], i32 [[BO]] 26 ; CHECK: br label %done 27 ; CHECK: done: 28 ; CHECK: [[PO:%.*]] = phi i32 [ [[BAO_T]], %T ], [ [[BAO_F]], %F ], [ [[AO]], %entry ] 29 ; CHECK: store i32 [[PO]], i32* @__dfsan_retval_origin_tls, align 4 30 31entry: 32 br i1 %c, label %next, label %done 33next: 34 br i1 %c, label %T, label %F 35T: 36 %sum = add i32 %a, %b 37 br label %done 38F: 39 %diff = sub i32 %b, %a 40 br label %done 41done: 42 %r = phi i32 [%sum, %T], [%diff, %F], [%a, %entry] 43 ret i32 %r 44}