File: code-coverage-tsan.c

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (11 lines) | stat: -rw-r--r-- 512 bytes parent folder | download | duplicates (8) 
1
2
3
4
5
6
7
8
9
10
11
 
/// -fprofile-update=atomic requires the (potentially concurrent) counter updates to be atomic.
// RUN: %clang_cc1 %s -triple x86_64 -emit-llvm -fprofile-update=atomic \
// RUN:   -coverage-notes-file=/dev/null -coverage-data-file=/dev/null -o - | FileCheck %s

// CHECK-LABEL: void @foo()
/// Two counters are incremented by __tsan_atomic64_fetch_add.
// CHECK:         atomicrmw add ptr @__llvm_gcov_ctr{{.*}} monotonic, align 8
// CHECK-NEXT:    atomicrmw sub ptr

_Atomic(int) cnt;
void foo(void) { cnt--; }