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[PATCH] arm: don't silently accept certain wrong VST4 variants

From: "Jan Beulich" <JBeulich at suse dot com>
To: "Richard Earnshaw" <rearnsha at arm dot com>,<paul at codesourcery dot com>, "Nick Clifton" <nickc at redhat dot com>
Cc: <binutils at sourceware dot org>
Date: Mon, 08 Apr 2013 14:53:55 +0100
Subject: [PATCH] arm: don't silently accept certain wrong VST4 variants

VST4 with operands matching VLD4's "single element to all lanes" assembled
silently to opcode 0xffffffff, and other VSTn variants produced unrelated
errors.

gas/
2013-04-08  Jan Beulich <jbeulich@suse.com>

	* gas/config/tc-arm.c (do_neon_ldx_stx): Reject VSTn in the
	NEON_ALL_LANES case.

--- 2013-04-08/gas/config/tc-arm.c
+++ 2013-04-08/gas/config/tc-arm.c
@@ -15999,6 +15999,11 @@ do_neon_ldx_stx (void)
 
     case NEON_ALL_LANES:
       NEON_ENCODE (DUP, inst);
+      if (inst.instruction == N_INV)
+	{
+	  first_error ("only loads support such operands");
+	  break;
+	}
       do_neon_ld_dup ();
       break;

Attachment: binutils-mainline-arm-vst4.patch
Description: Text document

Follow-Ups:
- Re: [PATCH] arm: don't silently accept certain wrong VST4 variants
  - From: Richard Earnshaw

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