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* [Bug inline-asm/31768] New: Invalid code or ICE for %z constraint
@ 2007-04-30 22:03 us15 at os dot inf dot tu-dresden dot de
2007-05-03 14:32 ` [Bug inline-asm/31768] " uros at gcc dot gnu dot org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: us15 at os dot inf dot tu-dresden dot de @ 2007-04-30 22:03 UTC (permalink / raw)
To: gcc-bugs
The following code should generate outb, outw and outl statements.
gcc-3.4.6 produces an ICE:
foo.cc: In function `void out(unsigned int, T) [with T = unsigned char]':
foo.cc:14: instantiated from here
foo.cc:5: internal compiler error: in print_operand, at config/i386/i386.c:7375
gcc-4.1.2 produces an ICE:
foo.cc: In function 'void out(unsigned int, T) [with T = unsigned char]':
foo.cc:5: internal compiler error: in print_operand, at config/i386/i386.c:7226
gcc-4.3.0 generates wrong code (outs instead of outw) for T=unsigned short
foo.cc: Assembler messages:
foo.cc:5: Error: suffix or operands invalid for `outs'
Code snippet:
template <typename T>
static inline void
out (unsigned port, T val)
{
asm volatile ("out%z0 %0, %w1" : : "a" (val), "Nd" (port));
}
int main()
{
unsigned char a;
unsigned short b;
unsigned long c;
out (0x80, a);
out (0x80, b);
out (0x80, c);
}
--
Summary: Invalid code or ICE for %z constraint
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: inline-asm
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: us15 at os dot inf dot tu-dresden dot de
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31768
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug inline-asm/31768] Invalid code or ICE for %z constraint
2007-04-30 22:03 [Bug inline-asm/31768] New: Invalid code or ICE for %z constraint us15 at os dot inf dot tu-dresden dot de
@ 2007-05-03 14:32 ` uros at gcc dot gnu dot org
2007-05-03 14:41 ` [Bug target/31768] " ubizjak at gmail dot com
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: uros at gcc dot gnu dot org @ 2007-05-03 14:32 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from uros at gcc dot gnu dot org 2007-05-03 15:32 -------
Subject: Bug 31768
Author: uros
Date: Thu May 3 14:32:25 2007
New Revision: 124379
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=124379
Log:
PR target/31768
* config/i386/i386.c (print_operand) ['z']: Output 'w' for
operands of size 2 when operand is not MEM_P.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31768
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/31768] Invalid code or ICE for %z constraint
2007-04-30 22:03 [Bug inline-asm/31768] New: Invalid code or ICE for %z constraint us15 at os dot inf dot tu-dresden dot de
2007-05-03 14:32 ` [Bug inline-asm/31768] " uros at gcc dot gnu dot org
@ 2007-05-03 14:41 ` ubizjak at gmail dot com
2007-05-03 15:22 ` us15 at os dot inf dot tu-dresden dot de
2007-05-03 16:38 ` ubizjak at gmail dot com
3 siblings, 0 replies; 5+ messages in thread
From: ubizjak at gmail dot com @ 2007-05-03 14:41 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from ubizjak at gmail dot com 2007-05-03 15:41 -------
(In reply to comment #0)
> unsigned long c;
Fixed in mainline. But don't use long types on "out" insn, as you will generate
"outll" on x86_64.
--
ubizjak at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Component|inline-asm |target
Known to fail| |4.1.2 4.2.0
Resolution| |FIXED
Target Milestone|--- |4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31768
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/31768] Invalid code or ICE for %z constraint
2007-04-30 22:03 [Bug inline-asm/31768] New: Invalid code or ICE for %z constraint us15 at os dot inf dot tu-dresden dot de
2007-05-03 14:32 ` [Bug inline-asm/31768] " uros at gcc dot gnu dot org
2007-05-03 14:41 ` [Bug target/31768] " ubizjak at gmail dot com
@ 2007-05-03 15:22 ` us15 at os dot inf dot tu-dresden dot de
2007-05-03 16:38 ` ubizjak at gmail dot com
3 siblings, 0 replies; 5+ messages in thread
From: us15 at os dot inf dot tu-dresden dot de @ 2007-05-03 15:22 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from us15 at os dot inf dot tu-dresden dot de 2007-05-03 16:22 -------
Is there any chance of this problem being fixed in 4.1 and 4.2 as well? If so,
should I open new bugs for those?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31768
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/31768] Invalid code or ICE for %z constraint
2007-04-30 22:03 [Bug inline-asm/31768] New: Invalid code or ICE for %z constraint us15 at os dot inf dot tu-dresden dot de
` (2 preceding siblings ...)
2007-05-03 15:22 ` us15 at os dot inf dot tu-dresden dot de
@ 2007-05-03 16:38 ` ubizjak at gmail dot com
3 siblings, 0 replies; 5+ messages in thread
From: ubizjak at gmail dot com @ 2007-05-03 16:38 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from ubizjak at gmail dot com 2007-05-03 17:38 -------
(In reply to comment #3)
> Is there any chance of this problem being fixed in 4.1 and 4.2 as well? If so,
> should I open new bugs for those?
The %z modifier is IMO not intended for general use, so I don't think the
backport will be done. However, you could just use
out (unsigned port, T val)
{
asm volatile ("out %0, %w1" : : "a" (val), "Nd" (port));
}
(i.e. "out" insn without any decorations), and correct code will be generated.
At least recent binutils will handle all cases, including unsigned long on
x86_64.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31768
^ permalink raw reply [flat|nested] 5+ messages in thread
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2007-04-30 22:03 [Bug inline-asm/31768] New: Invalid code or ICE for %z constraint us15 at os dot inf dot tu-dresden dot de
2007-05-03 14:32 ` [Bug inline-asm/31768] " uros at gcc dot gnu dot org
2007-05-03 14:41 ` [Bug target/31768] " ubizjak at gmail dot com
2007-05-03 15:22 ` us15 at os dot inf dot tu-dresden dot de
2007-05-03 16:38 ` ubizjak at gmail dot com
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