[Bug testsuite/45324] New: gcc.target/i386/volatile-bitfields-1.c doesn't work with i586-linux

[Bug testsuite/45324] New: gcc.target/i386/volatile-bitfields-1.c doesn't work with i586-linux

[hjl dot tools at gmail dot com]

When gcc is configured with i586-linux, I got

FAIL: gcc.target/i386/volatile-bitfields-1.c scan-assembler movzbl.*bits

I don't see anything wrong with

        .cfi_startproc
        movb    bits, %al
        sarb    %al
        movsbl  %al, %eax
        ret
        .cfi_endproc

I think we should also check "movb".


-- 
           Summary: gcc.target/i386/volatile-bitfields-1.c doesn't work with
                    i586-linux
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: testsuite
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl dot tools at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45324

[Bug testsuite/45324] gcc.target/i386/volatile-bitfields-1.c doesn't work with i586-linux

[ubizjak at gmail dot com]

------- Comment #1 from ubizjak at gmail dot com  2010-08-19 06:49 -------
It is just insn preferences for IX86_TUNE_PARTIAL_REG_STALL. We are not testing
this flag but move insn, so can you please test:

Index: volatile-bitfields-1.c
===================================================================
--- volatile-bitfields-1.c      (revision 163363)
+++ volatile-bitfields-1.c      (working copy)
@@ -14,4 +14,4 @@
   return bits.b;
 }

-/* { dg-final { scan-assembler "movzbl.*bits" } } */
+/* { dg-final { scan-assembler "mov(zbl|b).*bits" } } */

The patch is pre-approved if it solves your failure.


-- 

ubizjak at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2010-08-19 06:49:24
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45324

[Bug testsuite/45324] gcc.target/i386/volatile-bitfields-1.c doesn't work with i586-linux

[hjl at gcc dot gnu dot org]

------- Comment #2 from hjl at gcc dot gnu dot org  2010-08-19 14:18 -------
Subject: Bug 45324

Author: hjl
Date: Thu Aug 19 14:18:18 2010
New Revision: 163372

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=163372
Log:
Also scan movb.

2010-08-19  Uros Bizjak  <ubizjak@gmail.com>

        PR testsuite/45324
        * gcc.target/i386/volatile-bitfields-1.c: Also scan movb.

Modified:
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/i386/volatile-bitfields-1.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45324

[Bug testsuite/45324] gcc.target/i386/volatile-bitfields-1.c doesn't work with i586-linux

[hjl dot tools at gmail dot com]

------- Comment #3 from hjl dot tools at gmail dot com  2010-08-19 14:20 -------
Fixed.


-- 

hjl dot tools at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45324

[Bug testsuite/45324] gcc.target/i386/volatile-bitfields-1.c doesn't work with i586-linux

[hjl dot tools at gmail dot com]

-- 

hjl dot tools at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.6.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45324