diff options
Diffstat (limited to 'gcc/testsuite/g++.target/i386/pr102566-7.C')
| -rw-r--r-- | gcc/testsuite/g++.target/i386/pr102566-7.C | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.target/i386/pr102566-7.C b/gcc/testsuite/g++.target/i386/pr102566-7.C new file mode 100644 index 0000000..ce90214 --- /dev/null +++ b/gcc/testsuite/g++.target/i386/pr102566-7.C @@ -0,0 +1,22 @@ +/* { dg-do compile { target c++11 } } */ +/* { dg-options "-O2" } */ + +#include <atomic> + +template<uint32_t b> +void lock_bts(std::atomic<uint32_t> &a) { while (!(a.fetch_or(b) & b)); } +template<uint32_t b> +void lock_btr(std::atomic<uint32_t> &a) { while (a.fetch_and(~b) & b); } +template<uint32_t b> +void lock_btc(std::atomic<uint32_t> &a) { while (a.fetch_xor(b) & b); } +template void lock_bts<1U<<30>(std::atomic<uint32_t> &a); +template void lock_btr<1U<<30>(std::atomic<uint32_t> &a); +template void lock_btc<1U<<30>(std::atomic<uint32_t> &a); +template void lock_bts<1U<<31>(std::atomic<uint32_t> &a); +template void lock_btr<1U<<31>(std::atomic<uint32_t> &a); +template void lock_btc<1U<<31>(std::atomic<uint32_t> &a); + +/* { dg-final { scan-assembler-times "lock;?\[ \t\]*btsl" 2 } } */ +/* { dg-final { scan-assembler-times "lock;?\[ \t\]*btrl" 2 } } */ +/* { dg-final { scan-assembler-times "lock;?\[ \t\]*btcl" 2 } } */ +/* { dg-final { scan-assembler-not "cmpxchg" } } */ |