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1; Tests that we don't insert __sanitizer_cov_trace_pc_guard_init or some such2; when there is no instrumentation.3; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard -S | FileCheck %s4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"5target triple = "x86_64-unknown-linux-gnu"6 7@a = global i32 0, align 48 9; CHECK-NOT: call void10