--- Additional Comments From swanson at ukfsn dot org 2008-10-12 10:20
---
Created an attachment (id=2997)
--> (http://sourceware.org/bugzilla/attachment.cgi?id=2997&action=view)
binutils-cvs-fix2-i386-nop.patch
Add bitfield checking back to patch for .arch settings.
First point, do y
--- Additional Comments From swanson at ukfsn dot org 2008-10-12 09:37
---
But currently the only arch flags checked in i386_align_code was cpui686 which
is where we should disable use of NOPL for mentioned reasons.
--
http://sourceware.org/bugzilla/show_bug.cgi?id=6957
--- You
--- Additional Comments From hjl dot tools at gmail dot com 2008-10-12
09:52 ---
By default, assembler assumes CPU takes all instructions supported
by assembler. You can use -march=XXX to limit instructions to only
those supported by XXX.
--
http://sourceware.org/bugzilla/show_bug.cg
--- Additional Comments From hjl dot tools at gmail dot com 2008-10-12
09:49 ---
(In reply to comment #3)
> But currently the only arch flags checked in i386_align_code was cpui686 which
> is where we should disable use of NOPL for mentioned reasons.
If you want to run the binary on CPU
--- Additional Comments From hjl dot tools at gmail dot com 2008-10-12
12:44 ---
(In reply to comment #6)
> Created an attachment (id=2997)
--> (http://sourceware.org/bugzilla/attachment.cgi?id=2997&action=view)
> binutils-cvs-fix2-i386-nop.patch
>
> Add bitfield checking back to patch
--- Additional Comments From hjl dot tools at gmail dot com 2008-10-12
12:45 ---
(In reply to comment #6)
> Created an attachment (id=2997)
--> (http://sourceware.org/bugzilla/attachment.cgi?id=2997&action=view)
> binutils-cvs-fix2-i386-nop.patch
>
> Add bitfield checking back to patch
--- Additional Comments From swanson at ukfsn dot org 2008-10-12 13:25
---
Sorry but how can PROCESSOR_UNKNOWN mean it can run any instructions? It's
unknown! Therefore we must use lowest common denominator to expect it to work on
all CPUs.
Tune means scheduling.
Arch means instructions
--- Additional Comments From hjl dot tools at gmail dot com 2008-10-12
21:30 ---
(In reply to comment #9)
> Sorry but how can PROCESSOR_UNKNOWN mean it can run any instructions? It's
> unknown! Therefore we must use lowest common denominator to expect it to work
> on
> all CPUs.
If we
--- Additional Comments From hjl dot tools at gmail dot com 2008-10-12
21:35 ---
This testcase works for me:
[EMAIL PROTECTED] tmp]$ cat nops.s
.text
nop:
movsbl %al,%esi
.p2align 4
[EMAIL PROTECTED] tmp]$ as --32 -o nops.o nops.s -march=i486 -mtune=i686
[EMAIL P
