File: code-coverage-tsan.c

package info (click to toggle)
llvm-toolchain-snapshot 1%3A22~%2B%2B20250731080150%2Bbe449d6b6587-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,250,472 kB
  • sloc: cpp: 7,641,756; ansic: 1,439,220; asm: 1,072,591; python: 253,178; f90: 95,173; objc: 70,722; lisp: 44,365; pascal: 18,720; sh: 10,051; ml: 5,111; perl: 4,720; awk: 3,523; makefile: 3,397; javascript: 2,272; xml: 892; fortran: 783
file content (11 lines) | stat: -rw-r--r-- 512 bytes parent folder | download | duplicates (19) 
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--; }