[Bug c/88679] New: SSE2 intrinsics are available by default on x86

[bugzilla@poradnik-webmastera.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88679

            Bug ID: 88679
           Summary: SSE2 intrinsics are available by default on x86
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: bugzilla@poradnik-webmastera.com
  Target Milestone: ---

SSE2 intrinsics are available by default when compiling code for 32-bit x86.
Code below compiles fine with options -m32 -O3. I had to add -mno-sse2 to get
an error. 

Fortunately __SSE2__ is not defined by default, so code can rely on it.

[code]
#include <immintrin.h>

void test(__m128i const* m)
{
    __m128i v = _mm_load_si128(m);
}
[/code]