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[Bug target/53124] Arm NEON narrowing right shift instructions impose incorrect operand bounds (intrinsic and asm)
- From: "rearnsha at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 26 Apr 2012 16:47:38 +0000
- Subject: [Bug target/53124] Arm NEON narrowing right shift instructions impose incorrect operand bounds (intrinsic and asm)
- Auto-submitted: auto-generated
- References: <bug-53124-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53124
Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |FIXED
--- Comment #4 from Richard Earnshaw <rearnsha at gcc dot gnu.org> 2012-04-26 16:47:38 UTC ---
(In reply to comment #3)
> (In reply to comment #2)
> > The compiler and assembler are correct. The instruction is:
> >
> > VSHRN.I<size> Dd, Qm, #imm
> >
> > and the immediate, imm, must be in the range 1..size/2
> >
> > So for vshrn.i32 imm must be in the range 1..16
> >
> I apologize if I miss something but,as far as I can see, the ARM docs clearly
> say the imm should be in 0..size-1 range (see the link to the above). This is
> the nature of the bug.
>
What ARM docs? The ARM ARM (which is the doc that counts) is as I've stated.