1; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=1 -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS1 %s 2; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=2 -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS2 %s 3 4target 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" 5target triple = "x86_64-unknown-linux-gnu" 6 7 8; Check origin instrumentation of stores. 9; Check that debug info for origin propagation code is set correctly. 10 11@a8 = global i8 0, align 8 12@a4 = global i8 0, align 4 13@a2 = global i8 0, align 2 14@a1 = global i8 0, align 1 15 16; 8-aligned store => 8-aligned origin store, origin address is not realigned 17define void @Store8(i8 %x) sanitize_memory { 18entry: 19 store i8 %x, i8* @a8, align 8 20 ret void 21} 22 23; CHECK-LABEL: @Store8 24; CHECK-ORIGINS1: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls 25; CHECK-ORIGINS2: [[ORIGIN0:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls 26; CHECK-ORIGINS2: [[ORIGIN:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 [[ORIGIN0]]) 27; CHECK: store i32 [[ORIGIN]], {{.*}}, align 8 28; CHECK: ret void 29 30 31; 4-aligned store => 4-aligned origin store, origin address is not realigned 32define void @Store4(i8 %x) sanitize_memory { 33entry: 34 store i8 %x, i8* @a4, align 4 35 ret void 36} 37 38; CHECK-LABEL: @Store4 39; CHECK-ORIGINS1: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls 40; CHECK-ORIGINS2: [[ORIGIN0:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls 41; CHECK-ORIGINS2: [[ORIGIN:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 [[ORIGIN0]]) 42; CHECK: store i32 [[ORIGIN]], {{.*}}, align 4 43; CHECK: ret void 44 45 46; 2-aligned store => 4-aligned origin store, origin address is realigned 47define void @Store2(i8 %x) sanitize_memory { 48entry: 49 store i8 %x, i8* @a2, align 2 50 ret void 51} 52 53; CHECK-LABEL: @Store2 54; CHECK-ORIGINS1: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls 55; CHECK-ORIGINS2: [[ORIGIN0:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls 56; CHECK-ORIGINS2: [[ORIGIN:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 [[ORIGIN0]]) 57; CHECK: store i32 [[ORIGIN]], {{.*}}, align 4 58; CHECK: ret void 59 60 61; 1-aligned store => 4-aligned origin store, origin address is realigned 62define void @Store1(i8 %x) sanitize_memory { 63entry: 64 store i8 %x, i8* @a1, align 1 65 ret void 66} 67 68; CHECK-LABEL: @Store1 69; CHECK-ORIGINS1: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls 70; CHECK-ORIGINS2: [[ORIGIN0:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls 71; CHECK-ORIGINS2: [[ORIGIN:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 [[ORIGIN0]]) 72; CHECK: store i32 [[ORIGIN]], {{.*}}, align 4 73 74; CHECK: ret void 75