1 ; This test checks that we are not instrumenting unwanted acesses to globals:
2 ; - Instruction profiler counter instrumentation has known intended races.
3 ; - The gcov counters array has a known intended race.
5 ; RUN: opt < %s -tsan -S | FileCheck %s
7 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
8 target triple = "x86_64-apple-macosx10.9"
10 @__profc_test_gep = private global [1 x i64] zeroinitializer, section "__DATA,__llvm_prf_cnts", align 8
11 @__profc_test_bitcast = private global [2 x i64] zeroinitializer, section "__DATA,__llvm_prf_cnts", align 8
12 @__profc_test_bitcast_foo = private global [1 x i64] zeroinitializer, section "__DATA,__llvm_prf_cnts", align 8
14 @__llvm_gcov_ctr = internal global [1 x i64] zeroinitializer
15 @__llvm_gcov_ctr.1 = internal global [1 x i64] zeroinitializer
16 @__llvm_gcov_global_state_pred = internal global i32 0
17 @__llvm_gcda_foo = internal global i32 0
19 define i32 @test_gep() sanitize_thread {
21 %pgocount = load i64, i64* getelementptr inbounds ([1 x i64], [1 x i64]* @__profc_test_gep, i64 0, i64 0)
22 %0 = add i64 %pgocount, 1
23 store i64 %0, i64* getelementptr inbounds ([1 x i64], [1 x i64]* @__profc_test_gep, i64 0, i64 0)
25 %gcovcount = load i64, i64* getelementptr inbounds ([1 x i64], [1 x i64]* @__llvm_gcov_ctr, i64 0, i64 0)
26 %1 = add i64 %gcovcount, 1
27 store i64 %1, i64* getelementptr inbounds ([1 x i64], [1 x i64]* @__llvm_gcov_ctr, i64 0, i64 0)
29 %gcovcount.1 = load i64, i64* getelementptr inbounds ([1 x i64], [1 x i64]* @__llvm_gcov_ctr.1, i64 0, i64 0)
30 %2 = add i64 %gcovcount.1, 1
31 store i64 %2, i64* getelementptr inbounds ([1 x i64], [1 x i64]* @__llvm_gcov_ctr.1, i64 0, i64 0)
36 define i32 @test_bitcast() sanitize_thread {
38 %0 = load <2 x i64>, <2 x i64>* bitcast ([2 x i64]* @__profc_test_bitcast to <2 x i64>*), align 8
39 %.promoted5 = load i64, i64* getelementptr inbounds ([1 x i64], [1 x i64]* @__profc_test_bitcast_foo, i64 0, i64 0), align 8
40 %1 = add i64 %.promoted5, 10
41 %2 = add <2 x i64> %0, <i64 1, i64 10>
42 store <2 x i64> %2, <2 x i64>* bitcast ([2 x i64]* @__profc_test_bitcast to <2 x i64>*), align 8
43 store i64 %1, i64* getelementptr inbounds ([1 x i64], [1 x i64]* @__profc_test_bitcast_foo, i64 0, i64 0), align 8
47 define void @test_load() sanitize_thread {
49 %0 = load i32, i32* @__llvm_gcov_global_state_pred
50 store i32 1, i32* @__llvm_gcov_global_state_pred
52 %1 = load i32, i32* @__llvm_gcda_foo
53 store i32 1, i32* @__llvm_gcda_foo
58 ; CHECK-NOT: {{call void @__tsan_write}}