; This test checks that we are not instrumenting unwanted acesses to globals: ; - Instructions with the !nosanitize metadata (e.g. -fprofile-arcs instrumented counter accesses) ; - Instruction profiler counter instrumentation has known intended races. ; ; RUN: opt < %s -passes='function(tsan),module(tsan-module)' -S | FileCheck %s target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" target triple = "x86_64-apple-macosx10.9" @__profc_test_gep = private global [1 x i64] zeroinitializer, section "__DATA,__llvm_prf_cnts", align 8 @__profc_test_bitcast = private global [2 x i64] zeroinitializer, section "__DATA,__llvm_prf_cnts", align 8 @__profc_test_bitcast_foo = private global [1 x i64] zeroinitializer, section "__DATA,__llvm_prf_cnts", align 8 @__llvm_gcov_ctr = internal global [1 x i64] zeroinitializer @__llvm_gcov_ctr.1 = internal global [1 x i64] zeroinitializer @__llvm_gcov_global_state_pred = internal global i32 0 @__llvm_gcda_foo = internal global i32 0 define i32 @test_gep() sanitize_thread { entry: %pgocount = load i64, ptr @__profc_test_gep, !nosanitize !0 %0 = add i64 %pgocount, 1 store i64 %0, ptr @__profc_test_gep, !nosanitize !0 %gcovcount = load i64, ptr @__llvm_gcov_ctr, !nosanitize !0 %1 = add i64 %gcovcount, 1 store i64 %1, ptr @__llvm_gcov_ctr, !nosanitize !0 %gcovcount.1 = load i64, ptr @__llvm_gcov_ctr.1, !nosanitize !0 %2 = add i64 %gcovcount.1, 1 store i64 %2, ptr @__llvm_gcov_ctr.1, !nosanitize !0 ret i32 1 } define i32 @test_bitcast() sanitize_thread { entry: %0 = load <2 x i64>, ptr @__profc_test_bitcast, align 8, !nosanitize !0 %.promoted5 = load i64, ptr @__profc_test_bitcast_foo, align 8, !nosanitize !0 %1 = add i64 %.promoted5, 10 %2 = add <2 x i64> %0, store <2 x i64> %2, ptr @__profc_test_bitcast, align 8, !nosanitize !0 store i64 %1, ptr @__profc_test_bitcast_foo, align 8, !nosanitize !0 ret i32 undef } define void @test_load() sanitize_thread { entry: %0 = load i32, ptr @__llvm_gcov_global_state_pred, !nosanitize !0 store i32 1, ptr @__llvm_gcov_global_state_pred, !nosanitize !0 %1 = load i32, ptr @__llvm_gcda_foo, !nosanitize !0 store i32 1, ptr @__llvm_gcda_foo, !nosanitize !0 ret void } !0 = !{} ; CHECK-NOT: {{call void @__tsan_write}} ; CHECK: __tsan_init