benchmark/test/clobber_memory_assembly_test.cc
Henrique Bucher 9f7dc386be
Address warnings on NVIDIA nvc++ (#1573)
* Address warnings on NVIDIA nvc++

Types of warnings were being generated:
1. Deprecated warnings - solved by defining the relevant BENCHMARK_*
  macros for nvc++ and adding pragma suppress on a couple of .cc files
2. Setup/TearDown const vs non-const partial override - solved by
   adding non-const version
3. Static but not referenced - added diagnostic suppress for that file

* Modified manually to comply with CD/CI

* Revert partial override

* Suppress warnings from tests if compiler is NVHPC

---------

Co-authored-by: dominic <510002+dmah42@users.noreply.github.com>
2023-03-13 12:34:12 +00:00

65 lines
1.4 KiB
C++

#include <benchmark/benchmark.h>
#ifdef __clang__
#pragma clang diagnostic ignored "-Wreturn-type"
#endif
BENCHMARK_DISABLE_DEPRECATED_WARNING
extern "C" {
extern int ExternInt;
extern int ExternInt2;
extern int ExternInt3;
}
// CHECK-LABEL: test_basic:
extern "C" void test_basic() {
int x;
benchmark::DoNotOptimize(&x);
x = 101;
benchmark::ClobberMemory();
// CHECK: leaq [[DEST:[^,]+]], %rax
// CHECK: movl $101, [[DEST]]
// CHECK: ret
}
// CHECK-LABEL: test_redundant_store:
extern "C" void test_redundant_store() {
ExternInt = 3;
benchmark::ClobberMemory();
ExternInt = 51;
// CHECK-DAG: ExternInt
// CHECK-DAG: movl $3
// CHECK: movl $51
}
// CHECK-LABEL: test_redundant_read:
extern "C" void test_redundant_read() {
int x;
benchmark::DoNotOptimize(&x);
x = ExternInt;
benchmark::ClobberMemory();
x = ExternInt2;
// CHECK: leaq [[DEST:[^,]+]], %rax
// CHECK: ExternInt(%rip)
// CHECK: movl %eax, [[DEST]]
// CHECK-NOT: ExternInt2
// CHECK: ret
}
// CHECK-LABEL: test_redundant_read2:
extern "C" void test_redundant_read2() {
int x;
benchmark::DoNotOptimize(&x);
x = ExternInt;
benchmark::ClobberMemory();
x = ExternInt2;
benchmark::ClobberMemory();
// CHECK: leaq [[DEST:[^,]+]], %rax
// CHECK: ExternInt(%rip)
// CHECK: movl %eax, [[DEST]]
// CHECK: ExternInt2(%rip)
// CHECK: movl %eax, [[DEST]]
// CHECK: ret
}