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[Bug target/35189] -mno-sse4.2 turns off SSE4a
- From: "michael dot meissner at amd dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 13 Feb 2008 23:55:15 -0000
- Subject: [Bug target/35189] -mno-sse4.2 turns off SSE4a
- References: <bug-35189-682@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #2 from michael dot meissner at amd dot com 2008-02-13 23:55 -------
Umm, SSE4A is completely different from SSE4/SSE4.1/SSE4.2. SSE4A are the
instructions added with AMD's Barcelona machine, while SSE4.1 is the
instructions added with the current generation of Intel machines (Penryn if
memory serves), and SSE4.2 will be the instructions in the next Intel release.
The whole naming scheme is unfortunate, especially SSSE3 and SSE4A.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35189