Commitf8f1430

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Enable 64 bit atomics on ARM64.

Previously they were disabled due to performance concerns on 32bitarm, where 64bit atomics are often implemented via kernel traps.Author: Roman ShaposhnikDiscussion:http://postgr.es/m/CA+ULb+uErkFuXUCCXWHYvnV5KnAyjGUzzRcPA-M0cgO+Hm4RSA@mail.gmail.com

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Lines changed: 4 additions & 3 deletions

Original file line number	Diff line number	Diff line change
`@@ -18,8 +18,9 @@`
`18`	`18`	`#endif`
`19`	`19`
`20`	`20`	`/*`
`21`		`- * 64 bit atomics on arm are implemented using kernel fallbacks and might be`
`22`		`- * slow, so disable entirely for now.`
`23`		`- * XXX: We might want to change that at some point for AARCH64`
	`21`	`+ * 64 bit atomics on ARM32 are implemented using kernel fallbacks and thus`
	`22`	`+ * might be slow, so disable entirely. On ARM64 that problem doesn't exist.`
`24`	`23`	`*/`
	`24`	`+#if !defined(__aarch64__)&& !defined(__aarch64)`
`25`	`25`	`#definePG_DISABLE_64_BIT_ATOMICS`
	`26`	`+#endif/* __aarch64__ \|\| __aarch64 */`

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