avx2: _mm256_bslli_epi128 wasn't present in GCC until 4.8
@@ -979,7 +979,7 @@ simde_mm256_bslli_epi128 (simde__m256i a, const int imm8)
return simde__m256i_from_private(r_);
}
-#if defined(SIMDE_X86_AVX2_NATIVE)
+#if defined(SIMDE_X86_AVX2_NATIVE) && (!defined(HEDLEY_GCC_VERSION) || HEDLEY_GCC_VERSION_CHECK(4,8,0))
#define simde_mm256_bslli_epi128(a, imm8) _mm256_bslli_epi128(a, imm8)
#endif
#if defined(SIMDE_X86_AVX2_ENABLE_NATIVE_ALIASES)
