Xcode 4是否支持AVX？ [英] Does Xcode 4 have support for AVX?

问题描述

在我花费时间和金钱下载Xcode 4之前，有谁能告诉我它是否支持在Sandy Bridge CPU上支持AVX指令集的gcc版本（或任何其他编译器，例如LLVM）（即 gcc -mavx 在主流gcc版本上）？我没有在任何地方看到任何公开的发行说明，所以它不容易检查，并且除非它具有AVX支持，否则我并不真的需要Xcode 4。

Before I spend time and money downloading Xcode 4, can anyone tell me whether it comes with a version of gcc (or any other compiler, e.g. LLVM) which supports the AVX instruction set on Sandy Bridge CPUs (i.e. gcc -mavx on mainstream gcc builds) ? I don't seen any public release notes anywhere so it's not easy to check, and I don't really need Xcode 4 yet unless it has AVX support.

推荐答案

我最终破解并下载了Xcode 4 - 它看起来像clang是目前唯一支持AVX的编译器，尽管我没有正确测试它：

I eventually cracked and downloaded Xcode 4 - it looks like clang is the only compiler that may support AVX currently, although I haven't tested it properly:

$ clang -dM -E -mavx - < /dev/null | grep -i avx
#define __AVX__ 1

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