tree 24efce489164353fd7e7927c6b00aa9ece8c750f
parent 01cc6567cff77738e416a7ddc17de2d435a780ce
author Abseil Team <absl-team@google.com> 1655914486 -0700
committer Copybara-Service <copybara-worker@google.com> 1655914557 -0700

Use ABSL_INTERNAL_HAS_SSE2 instead of __SSE2__

This ensures that emmintrin.h is included with clang-cl. Otherwise, errors like
this occur:
.../absl/container/internal/raw_hash_set.h(536,8): error: unknown type name '__m128i'
inline __m128i _mm_cmpgt_epi8_fixed(__m128i a, __m128i b) {

This aligns the include ifdef guards and the guards that use the provided APIs.
The includes are also reordered, so they appear after the config header which
provides the internal macro values.

PiperOrigin-RevId: 456530271
Change-Id: I86dfd0022fd06fe7aa132138ec4d1bd14a86ba84