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[Bug target/53383] Allow -mpreferred-stack-boundary=3 on x86-64
- From: "hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 17 May 2012 15:37:02 +0000
- Subject: [Bug target/53383] Allow -mpreferred-stack-boundary=3 on x86-64
- Auto-submitted: auto-generated
- References: <bug-53383-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53383
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2012-05-17 15:37:02 UTC ---
Following the x86-64 psABI, GCC assumes incoming stack is
16byte aligned and generates 16-byte aligned vector move
on stack. If it isn't true, you will get segfault at
run-time.