1; Checks that a function with no-return in the entry block is not instrumented. 2; RUN: opt < %s -sancov -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard -S -enable-new-pm=0 | FileCheck %s 3; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard -S | FileCheck %s 4; CHECK-NOT: call void @__sanitizer_cov_trace_pc_guard 5 6target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 7target triple = "x86_64-unknown-linux-gnu" 8 9define dso_local void @_Z3foov() noinline nounwind optnone uwtable { 10entry: 11 call void @abort() noreturn nounwind 12 unreachable 13 14return: ; No predecessors! 15 ret void 16} 17 18declare dso_local void @abort() noreturn nounwind 19