From: Xinchen Hui <laruence@gmail.com>
Date: Thu, 1 Mar 2018 10:34:39 +0000 (+0800)
Subject: Attempt to fix build with gcc-4.8
X-Git-Tag: php-7.3.0alpha1~276
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=12ee810960cf949e034eb70be948e9c54864b717;p=php

Attempt to fix build with gcc-4.8
---

diff --git a/Zend/zend_portability.h b/Zend/zend_portability.h
index 02286da37b..4bbe023bdf 100644
--- a/Zend/zend_portability.h
+++ b/Zend/zend_portability.h
@@ -538,7 +538,12 @@ static zend_always_inline double _zend_get_nan(void) /* {{{ */
 # define PHP_HAVE_SSE4_2
 # endif
 
-# if PHP_HAVE_AVX2_INSTRUCTIONS && defined(HAVE_IMMINTRIN_H)
+/*
+ * AVX2 support was added in gcc 4.7, but AVX2 intrinsics don't work in
+ * __attribute__((target("avx2"))) functions until gcc 4.9.
+ */
+# if PHP_HAVE_AVX2_INSTRUCTIONS && defined(HAVE_IMMINTRIN_H) && \
+  (defined(__llvm__) || defined(__clang__) || (defined(__GNUC__) && ZEND_GCC_VERSION >= 4009))
 # define PHP_HAVE_AVX2
 # endif
 #endif