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From: "amit_chauhan21 at yahoo dot co.in" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug inline-asm/51423] New: Questions regarding Clobber List for inline ARM/NEON assembly
Date: Mon, 05 Dec 2011 12:42:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51423

             Bug #: 51423
           Summary: Questions regarding Clobber List for inline ARM/NEON
                    assembly
    Classification: Unclassified
           Product: gcc
           Version: 4.4.1
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: inline-asm
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: amit_chauhan21@yahoo.co.in


Dear All,

I am facing some random crashes in my applications on using the neon(inline)
assembly code. However with pure C code the application works fine. I had
following questions regarding neon inline assembly usage.


Q1> In Inline neon assembly does only d8-d15 registers are required to be added
in clobber list even if inline assembly uses d0-d7,d16-d31 registers?

Q2> Correct way to put the register in clobber list: s(32 bit) , d(64 bit) or
q(128bit) registers.

Thanks in Advanced.