[SYCL][E2E] Re-enable test case for exp(float) on win

[KornevNikita]

The issue was fixed by #17440

[KornevNikita]

Waiting for #16950
It's an MSVC bug.

[KornevNikita]

The version of MSVC now is 14.43.34808.

This code:

#include <iostream>
#include <complex>
int main() {
  std::complex<float> t(0.5f, -0.f);
  std::complex<float> r = std::exp(t);
  std::cout << r << std::endl;
  return 0;
}

results in:

# .---command stdout------------
# | (1.64872,-0)
# `-----------------------------

The result is correct, so this compiler should be OK. But the test case is still failing:

# .---command stdout------------
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #89
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #90
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #91
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #92
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #93
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #94
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #95
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #96
# `-----------------------------

@jinge90 do you know what may be wrong?

[jinge90]

The version of MSVC now is 14.43.34808.

This code:

#include <iostream>
#include <complex>
int main() {
  std::complex<float> t(0.5f, -0.f);
  std::complex<float> r = std::exp(t);
  std::cout << r << std::endl;
  return 0;
}

results in:

# .---command stdout------------
# | (1.64872,-0)
# `-----------------------------

The result is correct, so this compiler should be OK. But the test case is still failing:

# .---command stdout------------
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #89
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #90
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #91
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #92
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #93
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #94
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #95
# | Assertion std::signbit(r.imag()) == std::signbit(testcases[i].imag()) (line 337) failed for testcase #96
# `-----------------------------

@jinge90 do you know what may be wrong?

Let me take a look.
Thanks very much.

[jinge90]

Hi, @KornevNikita
I can reproduce the failure in my side and there are 2 findings:

1. the failed cases are similar, the input complex's imag is '-0' and the result's imag is 0 which should be '-0', it looks like the signbit of return value is discarded.
2. the failure is GPU specific, the test passed on CPU device in my side.

I will narrow down to see whether it is a IGC issue.

Thanks very much.

[KornevNikita]

Reverted Ge's commit, it's already in the sycl - #17440

[KornevNikita]

@intel/llvm-gatekeepers could you please merge?