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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 14:21:36 +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| |INVALID
--- Comment #2 from Richard Earnshaw <rearnsha at gcc dot gnu.org> 2012-04-26 14:21:36 UTC ---
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
Please also note that gcc-4.4 is now very old and no-longer being maintained, I
strongly suggest you upgrade to a more recent set of tools.