projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 1e59de90 TL |
1 | #include <benchmark/benchmark.h> |
| 2 | ||
| 3 | #ifdef __clang__ | |
| 4 | #pragma clang diagnostic ignored "-Wreturn-type" | |
| 5 | #endif | |
| 6 | ||
| 7 | extern "C" { | |
| 8 | ||
| 9 | extern int ExternInt; | |
| 10 | extern int ExternInt2; | |
| 11 | extern int ExternInt3; | |
| 12 | ||
| 13 | } | |
| 14 | ||
| 15 | // CHECK-LABEL: test_basic: | |
| 16 | extern "C" void test_basic() { | |
| 17 | int x; | |
| 18 | benchmark::DoNotOptimize(&x); | |
| 19 | x = 101; | |
| 20 | benchmark::ClobberMemory(); | |
| 21 | // CHECK: leaq [[DEST:[^,]+]], %rax | |
| 22 | // CHECK: movl $101, [[DEST]] | |
| 23 | // CHECK: ret | |
| 24 | } | |
| 25 | ||
| 26 | // CHECK-LABEL: test_redundant_store: | |
| 27 | extern "C" void test_redundant_store() { | |
| 28 | ExternInt = 3; | |
| 29 | benchmark::ClobberMemory(); | |
| 30 | ExternInt = 51; | |
| 31 | // CHECK-DAG: ExternInt | |
| 32 | // CHECK-DAG: movl $3 | |
| 33 | // CHECK: movl $51 | |
| 34 | } | |
| 35 | ||
| 36 | // CHECK-LABEL: test_redundant_read: | |
| 37 | extern "C" void test_redundant_read() { | |
| 38 | int x; | |
| 39 | benchmark::DoNotOptimize(&x); | |
| 40 | x = ExternInt; | |
| 41 | benchmark::ClobberMemory(); | |
| 42 | x = ExternInt2; | |
| 43 | // CHECK: leaq [[DEST:[^,]+]], %rax | |
| 44 | // CHECK: ExternInt(%rip) | |
| 45 | // CHECK: movl %eax, [[DEST]] | |
| 46 | // CHECK-NOT: ExternInt2 | |
| 47 | // CHECK: ret | |
| 48 | } | |
| 49 | ||
| 50 | // CHECK-LABEL: test_redundant_read2: | |
| 51 | extern "C" void test_redundant_read2() { | |
| 52 | int x; | |
| 53 | benchmark::DoNotOptimize(&x); | |
| 54 | x = ExternInt; | |
| 55 | benchmark::ClobberMemory(); | |
| 56 | x = ExternInt2; | |
| 57 | benchmark::ClobberMemory(); | |
| 58 | // CHECK: leaq [[DEST:[^,]+]], %rax | |
| 59 | // CHECK: ExternInt(%rip) | |
| 60 | // CHECK: movl %eax, [[DEST]] | |
| 61 | // CHECK: ExternInt2(%rip) | |
| 62 | // CHECK: movl %eax, [[DEST]] | |
| 63 | // CHECK: ret | |
| 64 | } |