xref: /llvm-project/compiler-rt/test/nsan/vec_sqrt_ext.cpp (revision 52ae891036e3ab1f668eb103c46ca57257901c6b)
1 // RUN: %clangxx_nsan -O0 -g -mavx %s -o %t
2 // RUN: env NSAN_OPTIONS=check_nan=true,halt_on_error=0 %run %t 2>&1 | FileCheck %s
3 // RUN: %clangxx_nsan -O3 -g -mavx %s -o %t
4 // RUN: env NSAN_OPTIONS=check_nan=true,halt_on_error=0 %run %t 2>&1 | FileCheck %s
5 #include <iostream>
6 #include <cmath>
7 
8 typedef float v8sf __attribute__ ((vector_size(32)));
9 
10 v8sf simd_sqrt(v8sf a) {
11   return __builtin_elementwise_sqrt(a);
12   // CHECK: WARNING: NumericalStabilitySanitizer: NaN detected
13 }
14 
15 int main() {
16   v8sf a = {-1.0, -2.0, -3.0, 4.0, 5.0, 6.0, 7.0, 8.0};
17   a = simd_sqrt(a);
18 
19   // This prevents DCE.
20   for (size_t i = 0; i < 8; ++i) {
21     std::cout << a[i] << std::endl;
22     // CHECK: WARNING: NumericalStabilitySanitizer: NaN detected
23   }
24   return 0;
25 }
26